SlideShare a Scribd company logo

Adobe AEM - From Eventing to Job Processing

C
Carsten Ziegeler

The document discusses the transition from eventing to job processing within Adobe's technology stack, focusing on the use of OSGi Event Admin for event publishing and job management. It outlines the architecture for job distribution, highlighting the components involved and the handling of job consumers and jobs in both clustered and non-clustered setups. It also introduces new features in version 5.6.1, such as job offloading and the integration of workflows for better resource management.

TechnologyBusiness
1 of 73
Downloaded 253 times
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
FROM EVENTING TO JOB PROCESSING Carsten Ziegeler | Adobe Research Switzerland 1
2 •  RnD Team at Adobe Research Switzerland •  Co-founder Adobe Granite •  OSGi Core Platform and Enterprise Expert Groups •  Member of the ASF •  Current PMC Chair of Apache Sling •  Apache Sling, Felix, ACE •  Conference Speaker •  Technical Reviewer •  Article/Book Author cziegele@adobe.com @cziegeler ABOUT
3 OVERVIEW Where to fit in the stack Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution Felix OSGi Event Admin FromEventingtoJobProcessing
4 OVERVIEW Where to fit in the stack Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution Felix OSGi Event Admin FromEventingtoJobProcessing
5 OSGI EVENT ADMIN Publish / Subscribe Model OSGi Event Admin Component A publish deliver Component X Component Y
6 •  OSGi event is a data object with •  Topic (hierarchical namespace) •  Properties (key-value-pairs) •  Page Event •  Topic: com/day/cq/wcm/core/page •  Properties: path, change type (add/remove/edit) etc. OSGI EVENT ADMIN Publish / Subscribe Model
7 •  Publisher creates event object •  Sends event through EventAdmin service •  Either sync or async delivery •  Subscriber is an OSGi service (EventHandler) •  Service registration properties •  Interested topic(s) •  com/day/cq/wcm/core/* •  Additional filters (optional) •  (type="add“) OSGI EVENT ADMIN Publish / Subscribe Model
8 •  Immediate delivery to available subscribers •  No guarantee of delivery •  No distributed delivery OSGI EVENT ADMIN Publish / Subscribe Model
9 •  Immediate delivery to available subscribers •  No guarantee of delivery •  No distributed delivery OSGI EVENT ADMIN Publish / Subscribe Model DiscoverySling Job Distribution
10 OVERVIEW Where to fit in the stack Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution
11 OVERVIEW Where to fit in the stack Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution New in 5.6.1
12 INSTALLATION SCENARIOS Clustered CRX Single Instance CRX Instance 1 Instance 2 Instance 3
13 Instance: Unique Id (Sling ID) TOPOLOGIES I Apache Sling Discovery Clustered CRXCRX ID : A ID : X ID : 42ID : 1 Single Instance Instance 1 Instance 2 Instance 3
14 •  Instance: Unique Id (Sling ID) •  Cluster: Unique Id and leader TOPOLOGIES I Apache Sling Discovery Cluster 99Cluster 35 Clustered CRXCRX ID : A ID : X ID : 42ID : 1 Single Instance Instance 1 Instance 2 Instance 3 Leader Leader
15 •  Topology: Set of clusters TOPOLOGIES I Apache Sling Discovery Cluster 99Cluster 35 Clustered CRXCRX ID : A ID : X ID : 42ID : 1 Single Instance Instance 1 Instance 2 Instance 3 Leader Leader TopologyTopology •  Instance: Unique Id (Sling ID) •  Cluster: Unique Id and leader
16 TOPOLOGIES I Apache Sling Discovery •  Instance: Unique Id (Sling ID) •  Cluster: Unique Id and leader •  Topology: Set of clusters Cluster 99 Clustered CRXCRX ID : A ID : X ID : 42ID : 1 Single Instance Instance 1 Instance 2 Instance 3 Leader Topology Cluster 35 Leader
Cluster 99 17 •  Instance •  Sling ID •  Optional: Name and description •  Belongs to a cluster •  Might be the cluster leader •  Additional properties which are distributed •  Extensible through own services (PropertyProvider) •  E.g. data center, region or enabled job topics •  Cluster •  Elects (stable) leader •  Stable instance ordering •  TopologyEventListener: receives events on topology changes TOPOLOGIES II Apache Sling Discovery ID : 42 Instance 3 Topology Leader
18 OVERVIEW Where to fit in the stack Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution
19 •  Job : Guaranteed processing, exactly once •  Exactly one job consumer •  Started by client code, e.g. for replication, workflow... •  Job topic •  Payload is a serializable map JOB HANDLING I Apache Sling Job Handling
20 •  Sling Job Manager handles and distributes jobs •  Delivers job to a job consumer… •  …and waits for response •  Retry and failover •  Notification listeners (fail, retry, success) JOB HANDLING I Apache Sling Job Handling
21 STARTING / PROCESSING A JOB I Apache Sling Job Handling public interface JobConsumer { String PROPERTY_TOPICS = "job.topics"; enum JobResult { OK, FAILED, CANCEL, ASYNC } JobResult process(Job job); } public interface JobManager { Job addJob(String topic, String optionalName, Map<String, Object> properties); … } Starting a job Processing a job Note: Starting/processing of jobs through Event Admin is deprecated but still supported New in 5.6.1
22 @Component @Service(value={JobConsumer.class}) @Property(name=JobConsumer.PROPERTY_TOPICS, value="org/apache/sling/jobs/backup") public class BackupJobConsumer implements JobConsumer { @Override public JobResult process(final Job job) { // do backup return JobResult.OK; } } STARTING / PROCESSING A JOB II Apache Sling Job Handling New in 5.6.1
23 •  New jobs are immediately persisted (resource tree / repository) •  Jobs are “pushed” to the processing instance •  Processing instances use different queues •  Associated with job topic(s) •  Main queue •  0..n custom queues •  For example: replication agent queue or workflow queue JOB HANDLING II Apache Sling Job Handling
24 •  Queue is configurable •  Queue is started on demand in own thread •  And stopped if unused for some time •  Types •  Ordered queue (eg replication) •  Parallel queues: Plain and Topic Round Robin (eg workflow) •  Limit for parallel threads per queue •  Number of retries (-1 = endless) •  Retry delay •  Thread priority JOB QUEUE Apache Sling Job Handling
25 •  Job Manager Configuration = Main Queue Configuration •  Maximum parallel jobs (15) •  Retries (10) •  Retry Delay •  Eventing Thread Pool Configuration •  Used by all queues •  Pool size (35) = Maximum parallel jobs for a single instance ADDITIONAL CONFIGURATIONS Apache Sling Job Handling
26 MONITORING – WEB CONSOLE Apache Sling Job Handling
27 MONITORING – WEB CONSOLE Apache Sling Job Handling
28 •  Each instance determines enabled job topics •  Derived from Job Consumers (new API required) •  Can be whitelisted/blacklisted (in Job Consumer Manager) •  Announced through Topology •  Job Distribution depends on enabled job topics and queue type •  Potential set of instances derived from topology (enabled job topics) •  Ordered : processing on leader only, one job after the other •  Parallel: Round robin distribution on all potential instances •  Local cluster instances have preference •  Failover •  Instance crash: leader redistributes jobs to available instances •  Leader change taken into account •  On enabled job topics changes: potential redistribution JOB DISTRIBUTION Apache Sling Job Handling
29 •  Scalability in AEM: •  DAM Ingestion •  Non-Clustered installation requirement •  The term Offloading: •  In AEM used for all things job distribution and topology in clustered and non- clustered installations, e.g. ‘Offloading Browser’ •  More technically it’s ‘only’ a little add-on in Granite to Sling Job Distribution for handling non-clustered installations WHY OFFLOADING
30 OVERVIEW Where to fit in the stack Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution
31 OVERVIEW Where to fit in the stack Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution
32 SLING JOB DISTRIBUTION Topology Instance Sling ID: 1 Job Manager Instance Sling ID: 2 Job Manager Instance Sling ID: 3 Job Manager Instance Sling ID: 4 Job Manager Job Consumer Topic: A Job Consumer Topic: B Job Consumer Topic: C
33 SLING JOB DISTRIBUTION Instance Sling ID: 1 Job Manager Instance Sling ID: 2 Job Manager Instance Sling ID: 3 Job Manager Instance Sling ID: 4 Job ManagerA Job Consumer Topic: A Job Consumer Topic: B A:2 Job Consumer Topic: CJob Topology
34 SLING JOB DISTRIBUTION Instance Sling ID: 1 Job Manager Instance Sling ID: 2 Job Manager Instance Sling ID: 3 Job Manager Instance Sling ID: 4 Job ManagerB Job Consumer Topic: A Job Consumer Topic: B B:3 Job Consumer Topic: CJob Topology
35 SLING JOB DISTRIBUTION Instance Sling ID: 1 Job Manager Instance Sling ID: 2 Job Manager Instance Sling ID: 3 Job Manager Instance Sling ID: 4 Job ManagerC Job Consumer Topic: A Job Consumer Topic: B C:4 Job Consumer Topic: CJob ? Topology
36 SLING JOB DISTRIBUTION Instance Sling ID: 1 Job Manager Instance Sling ID: 2 Job Manager Instance Sling ID: 3 Job Manager Instance Sling ID: 4 Job ManagerC Job Consumer Topic: A Job Consumer Topic: B C:4 Job Consumer Topic: CJob Offloading Framework Topology
37 •  Detects offloading jobs •  Transport of job and job payload between origin and target instance •  Uses replication for the transport •  No distribution of jobs •  No execution of jobs OFFLOADING FRAMEWORK Overview Instance Sling ID: 1 Job Manager Offloading Job Manager C:4 Instance Sling ID: 4 Job Manager Job Consumer Topic: C Offloading Job Manager C:4 C Job Replication 1 2 3 5 4 6 7 Topology
38 •  Replication agents are created automatically •  Uses naming convention •  Needs manual adjustments (replication user) OFFLOADING FRAMEWORK Replication Worker Sling ID: 4 Author Sling ID: 1 offloading_4 (outgoing agent) offloading_reverse_4 (reverse agent) offloading_outbox (outbox agent)
39 •  Additional properties required •  Offloading job input •  Property: OffloadingJobProperties. INPUT_PAYLOAD (offloading.input.payload) •  Offloading job output •  Property: OffloadingJobProperties. OUTPUT_PAYLOAD (offloading.output.payload) •  Takes comma separated list of paths •  Used to build the replication package •  Job sender needs to set these properties for offloading to work! OFFLOADING FRAMEWORK Job Payload
40 •  Configures Job Consumers •  Configures the topic white/black listing properties of each instance •  What jobs to execute on what instance •  Configures the distribution •  Configuration applies for both, clustered and non-clustered installations OFFLOADING BROWSER UI
41 OFFLOADING BROWSER UI
42 OFFLOADING BROWSER UI
43 OFFLOADING BROWSER UI
44 OVERVIEW Where to fit in the stack Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution
45 •  New JobConsumer •  Class: WorkflowOffloadingJobConsumer •  Topic: com/adobe/granite/workflow/offloading •  Can launch new workflows •  Expects the workflow model on the job payload •  Expects the workflow payload on the job payload •  For use with clustered and non-clustered installations WORKFLOW DISTRIBUTION
46 @Component @Service @Property(name = JobConsumer.PROPERTY_TOPICS, value = WorkflowOffloadingJobConsumer.TOPIC) public class WorkflowOffloadingJobConsumer implements JobConsumer { public static final String TOPIC = "com/adobe/granite/workflow/offloading"; public static final String WORKFLOW_OFFLOADING_MODEL = "offloading.workflow.model"; public static final String WORKFLOW_OFFLOADING_PAYLOAD = "offloading.workflow.payload”; public JobResult process(Job job) { // read workflow model and payload from job payload String modelPath= job.getProperty(WORKFLOW_OFFLOADING_MODEL , ""); String payloadPath= job.getProperty(WORKFLOW_OFFLOADING_PAYLOAD , ""); // get/create WorkflowSession, WorkflowModel and WorkflowData objects WorkflowSession wfSession = ..; WorkflowModel wfModel = ..; WorkflowData wfData = ..; // start the workflow wfSession.startWorkflow(wfModel, wfData, metaData); // all good return JobResutl.OK; } } WORKFLOW DISTRIBUTION Job Consumer (Simplified)
47 @Component @Service @Property(name = JobConsumer.PROPERTY_TOPICS, value = WorkflowOffloadingJobConsumer.TOPIC) public class WorkflowOffloadingJobConsumer implements JobConsumer { public static final String TOPIC = "com/adobe/granite/workflow/offloading"; public static final String WORKFLOW_OFFLOADING_MODEL = "offloading.workflow.model"; public static final String WORKFLOW_OFFLOADING_PAYLOAD = "offloading.workflow.payload”; public JobResult process(Job job) { // read workflow model and payload from job payload String modelPath= job.getProperty(WORKFLOW_OFFLOADING_MODEL , ""); String payloadPath= job.getProperty(WORKFLOW_OFFLOADING_PAYLOAD , ""); // get/create WorkflowSession, WorkflowModel and WorkflowData objects WorkflowSession wfSession = ..; WorkflowModel wfModel = ..; WorkflowData wfData = ..; // start the workflow wfSession.startWorkflow(wfModel, wfData, metaData); // all good return JobResutl.OK; } } WORKFLOW DISTRIBUTION Job Consumer (Simplified) •  Define the job topic
48 @Component @Service @Property(name = JobConsumer.PROPERTY_TOPICS, value = WorkflowOffloadingJobConsumer.TOPIC) public class WorkflowOffloadingJobConsumer implements JobConsumer { public static final String TOPIC = "com/adobe/granite/workflow/offloading"; public static final String WORKFLOW_OFFLOADING_MODEL = "offloading.workflow.model"; public static final String WORKFLOW_OFFLOADING_PAYLOAD = "offloading.workflow.payload”; public JobResult process(Job job) { // read workflow model and payload from job payload String modelPath= job.getProperty(WORKFLOW_OFFLOADING_MODEL , ""); String payloadPath= job.getProperty(WORKFLOW_OFFLOADING_PAYLOAD , ""); // get/create WorkflowSession, WorkflowModel and WorkflowData objects WorkflowSession wfSession = ..; WorkflowModel wfModel = ..; WorkflowData wfData = ..; // start the workflow wfSession.startWorkflow(wfModel, wfData, metaData); // all good return JobResutl.OK; } } WORKFLOW DISTRIBUTION Job Consumer (Simplified) •  Create service component •  Must register with topic •  Implement new JobConsumer interface
49 @Component @Service @Property(name = JobConsumer.PROPERTY_TOPICS, value = WorkflowOffloadingJobConsumer.TOPIC) public class WorkflowOffloadingJobConsumer implements JobConsumer { public static final String TOPIC = "com/adobe/granite/workflow/offloading"; public static final String WORKFLOW_OFFLOADING_MODEL = "offloading.workflow.model"; public static final String WORKFLOW_OFFLOADING_PAYLOAD = "offloading.workflow.payload”; public JobResult process(Job job) { // read workflow model and payload from job payload String modelPath= job.getProperty(WORKFLOW_OFFLOADING_MODEL , ""); String payloadPath= job.getProperty(WORKFLOW_OFFLOADING_PAYLOAD , ""); // get/create WorkflowSession, WorkflowModel and WorkflowData objects WorkflowSession wfSession = ..; WorkflowModel wfModel = ..; WorkflowData wfData = ..; // start the workflow wfSession.startWorkflow(wfModel, wfData, metaData); // all good return JobResutl.OK; } } WORKFLOW DISTRIBUTION Job Consumer (Simplified) •  Access job properties (payload) •  Read workflow model and payload from job properties
50 @Component @Service @Property(name = JobConsumer.PROPERTY_TOPICS, value = WorkflowOffloadingJobConsumer.TOPIC) public class WorkflowOffloadingJobConsumer implements JobConsumer { public static final String TOPIC = "com/adobe/granite/workflow/offloading"; public static final String WORKFLOW_OFFLOADING_MODEL = "offloading.workflow.model"; public static final String WORKFLOW_OFFLOADING_PAYLOAD = "offloading.workflow.payload”; public JobResult process(Job job) { // read workflow model and payload from job payload String modelPath= job.getProperty(WORKFLOW_OFFLOADING_MODEL , ""); String payloadPath= job.getProperty(WORKFLOW_OFFLOADING_PAYLOAD , ""); // get/create WorkflowSession, WorkflowModel and WorkflowData objects WorkflowSession wfSession = ..; WorkflowModel wfModel = ..; WorkflowData wfData = ..; // start the workflow wfSession.startWorkflow(wfModel, wfData, metaData); // all good return JobResutl.OK; } } WORKFLOW DISTRIBUTION Job Consumer (Simplified) •  Workflow specific •  Use workflow API to start workflow for the given model and payload
51 @Component @Service @Property(name = JobConsumer.PROPERTY_TOPICS, value = WorkflowOffloadingJobConsumer.TOPIC) public class WorkflowOffloadingJobConsumer implements JobConsumer { public static final String TOPIC = "com/adobe/granite/workflow/offloading"; public static final String WORKFLOW_OFFLOADING_MODEL = "offloading.workflow.model"; public static final String WORKFLOW_OFFLOADING_PAYLOAD = "offloading.workflow.payload”; public JobResult process(Job job) { // read workflow model and payload from job payload String modelPath= job.getProperty(WORKFLOW_OFFLOADING_MODEL , ""); String payloadPath= job.getProperty(WORKFLOW_OFFLOADING_PAYLOAD , ""); // get/create WorkflowSession, WorkflowModel and WorkflowData objects WorkflowSession wfSession = ..; WorkflowModel wfModel = ..; WorkflowData wfData = ..; // start the workflow wfSession.startWorkflow(wfModel, wfData, metaData); // all good return JobResutl.OK; } } WORKFLOW DISTRIBUTION Job Consumer (Simplified) •  Use JobResult enumeration to report back the job status
52 OVERVIEW Where to fit in the stack Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution
53 •  Default ingestion workflow: “DAM Update Asset” •  Load is put on the instance where the workflow is started, usually the author •  New ingestion workflow: “DAM Update Asset Offloading” •  Needs to be manually enabled by changing the workflow launcher •  New workflow model with a single step: AssetOffloadingProcess •  Uses WorkflowExternalProcess API •  Creates a new job on topic: com/adobe/granite/workflow/offloading •  Allows distributing the default ingestion workflow •  Load is put on the instance where the job is distributed to •  Can be used to distribute in clustered and non-clustered installations DAM INGESTION
54 @Component @Service public class AssetOffloadingProcess implements WorkflowExternalProcess { @Reference private JobManager jobManager; private static final String TOPIC = "com/adobe/granite/workflow/offloading"; public Serializable execute(WorkItem workItem, WorkflowSession workflowSession, MetaDataMap metaDataMap){ Asset asset = ..; String workflowModel = “/etc/workflow/models/dam/update_asset/jcr:content/model”; String workflowPayload = “/content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg”; ValueMap jobProperties = new ValueMapDecorator(new HashMap<String, Object>()); jobProperties.put(WORKFLOW_OFFLOADING_MODEL, workflowModel); jobProperties.put(WORKFLOW_OFFLOADING_PAYLOAD, workflowPayload); String offloadingInput = “/etc/workflow/models/dam/update_asset/jcr:content/model, /content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg” ; String offloadingOutput = “/etc/workflow/models/dam/update_asset/jcr:content/model, /content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg” ; jobProperties.put(OffloadingJobProperties.INPUT_PAYLOAD.propertyName(), offloadingInput); jobProperties.put(OffloadingJobProperties.OUTPUT_PAYLOAD.propertyName(), offloadingOutput); Job offloadingJob = jobManager.addJob(TOPIC, null, jobProperties); return offloadingJob.getId(); } DAM INGESTION Create Job (from workflow step)
55 @Component @Service public class AssetOffloadingProcess implements WorkflowExternalProcess { @Reference private JobManager jobManager; private static final String TOPIC = "com/adobe/granite/workflow/offloading"; public Serializable execute(WorkItem workItem, WorkflowSession workflowSession, MetaDataMap metaDataMap){ Asset asset = ..; String workflowModel = “/etc/workflow/models/dam/update_asset/jcr:content/model”; String workflowPayload = “/content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg”; ValueMap jobProperties = new ValueMapDecorator(new HashMap<String, Object>()); jobProperties.put(WORKFLOW_OFFLOADING_MODEL, workflowModel); jobProperties.put(WORKFLOW_OFFLOADING_PAYLOAD, workflowPayload); String offloadingInput = “/etc/workflow/models/dam/update_asset/jcr:content/model, /content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg” ; String offloadingOutput = “/etc/workflow/models/dam/update_asset/jcr:content/model, /content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg” ; jobProperties.put(OffloadingJobProperties.INPUT_PAYLOAD.propertyName(), offloadingInput); jobProperties.put(OffloadingJobProperties.OUTPUT_PAYLOAD.propertyName(), offloadingOutput); Job offloadingJob = jobManager.addJob(TOPIC, null, jobProperties); return offloadingJob.getId(); } DAM INGESTION Create Job (from workflow step) •  Create service component •  Implement WorkflowExternalProcess interface •  Reference JobManager service
56 @Component @Service public class AssetOffloadingProcess implements WorkflowExternalProcess { @Reference private JobManager jobManager; private static final String TOPIC = "com/adobe/granite/workflow/offloading"; public Serializable execute(WorkItem workItem, WorkflowSession workflowSession, MetaDataMap metaDataMap){ Asset asset = ..; String workflowModel = “/etc/workflow/models/dam/update_asset/jcr:content/model”; String workflowPayload = “/content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg”; ValueMap jobProperties = new ValueMapDecorator(new HashMap<String, Object>()); jobProperties.put(WORKFLOW_OFFLOADING_MODEL, workflowModel); jobProperties.put(WORKFLOW_OFFLOADING_PAYLOAD, workflowPayload); String offloadingInput = “/etc/workflow/models/dam/update_asset/jcr:content/model, /content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg” ; String offloadingOutput = “/etc/workflow/models/dam/update_asset/jcr:content/model, /content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg” ; jobProperties.put(OffloadingJobProperties.INPUT_PAYLOAD.propertyName(), offloadingInput); jobProperties.put(OffloadingJobProperties.OUTPUT_PAYLOAD.propertyName(), offloadingOutput); Job offloadingJob = jobManager.addJob(TOPIC, null, jobProperties); return offloadingJob.getId(); } DAM INGESTION Create Job (from workflow step) •  DAM and Workflow specific •  Resolve to Asset •  Read model from meta data •  Read workflow payload from Asset path
57 public Serializable execute(WorkItem workItem, WorkflowSession workflowSession, MetaDataMap metaDataMap){ Asset asset = ..; String workflowModel = “/etc/workflow/models/dam/update_asset/jcr:content/model”; String workflowPayload = “/content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg”; ValueMap jobProperties = new ValueMapDecorator(new HashMap<String, Object>()); jobProperties.put(WORKFLOW_OFFLOADING_MODEL, workflowModel); jobProperties.put(WORKFLOW_OFFLOADING_PAYLOAD, workflowPayload); String offloadingInput = “/etc/workflow/models/dam/update_asset/jcr:content/model, /content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg” ; String offloadingOutput = “/etc/workflow/models/dam/update_asset/jcr:content/model, /content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg” ; jobProperties.put(OffloadingJobProperties.INPUT_PAYLOAD.propertyName(), offloadingInput); jobProperties.put(OffloadingJobProperties.OUTPUT_PAYLOAD.propertyName(), offloadingOutput); Job offloadingJob = jobManager.addJob(TOPIC, null, jobProperties); return offloadingJob.getId(); } DAM INGESTION Create Job (from workflow step) •  ValueMap for job properties •  Put model and payload on job properties •  Used by the JobConsumer
58 public Serializable execute(WorkItem workItem, WorkflowSession workflowSession, MetaDataMap metaDataMap){ Asset asset = ..; String workflowModel = “/etc/workflow/models/dam/update_asset/jcr:content/model”; String workflowPayload = “/content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg”; ValueMap jobProperties = new ValueMapDecorator(new HashMap<String, Object>()); jobProperties.put(WORKFLOW_OFFLOADING_MODEL, workflowModel); jobProperties.put(WORKFLOW_OFFLOADING_PAYLOAD, workflowPayload); String offloadingInput = “/etc/workflow/models/dam/update_asset/jcr:content/model, /content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg” ; String offloadingOutput = “/etc/workflow/models/dam/update_asset/jcr:content/model, /content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg” ; jobProperties.put(OffloadingJobProperties.INPUT_PAYLOAD.propertyName(), offloadingInput); jobProperties.put(OffloadingJobProperties.OUTPUT_PAYLOAD.propertyName(), offloadingOutput); Job offloadingJob = jobManager.addJob(TOPIC, null, jobProperties); return offloadingJob.getId(); } DAM INGESTION Create Job (from workflow step) •  Build offloading payload properties •  Comma separated list of paths •  Put them on the job payload as well •  Only used for non-clustered distribution
59 public Serializable execute(WorkItem workItem, WorkflowSession workflowSession, MetaDataMap metaDataMap){ Asset asset = ..; String workflowModel = “/etc/workflow/models/dam/update_asset/jcr:content/model”; String workflowPayload = “/content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg”; ValueMap jobProperties = new ValueMapDecorator(new HashMap<String, Object>()); jobProperties.put(WORKFLOW_OFFLOADING_MODEL, workflowModel); jobProperties.put(WORKFLOW_OFFLOADING_PAYLOAD, workflowPayload); String offloadingInput = “/etc/workflow/models/dam/update_asset/jcr:content/model, /content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg” ; String offloadingOutput = “/etc/workflow/models/dam/update_asset/jcr:content/model, /content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg” ; jobProperties.put(OffloadingJobProperties.INPUT_PAYLOAD.propertyName(), offloadingInput); jobProperties.put(OffloadingJobProperties.OUTPUT_PAYLOAD.propertyName(), offloadingOutput); Job offloadingJob = jobManager.addJob(TOPIC, null, jobProperties); return offloadingJob.getId(); } DAM INGESTION Create Job (from workflow step) •  Create job using JobManager service •  Use topic from job consumer •  Put job payload properties •  Return the jobId as the workflow process id (workflow specific)
60 @Component @Service public class AssetOffloadingProcess implements WorkflowExternalProcess { @Reference private JobManager jobManager; private static final String TOPIC = "com/adobe/granite/workflow/offloading"; public Serializable execute(WorkItem workItem, WorkflowSession workflowSession, MetaDataMap metaDataMap){ …. } public boolean hasFinished(Serializable externalProcessId, ..){ // returns null, if job is finished Job offloadingJob = jobManager.getJobById((String) externalProcessId); return offloadingJob == null; } } DAM INGESTION Create Job (from workflow step) •  Workflow API specific callback •  Process id = jobId, from execute() •  Query job by jobId •  Workflow step finished when job is finished
61 •  Choose a job topic •  Create JobConsumer component and register with topic chosen •  To create a new job use new JobManager.addJob() API with the topic chosen and the job payload •  Add offloading payload to job payload •  Bundle and deploy JobConsumer on topology instances •  Enable/Disable the new topic on the instances, using Offloading Browser DEVELOPMENT - RECIPE
62 TAKE AWAY Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution
63 TAKE AWAY Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution org.apache.sling.discovery.api •  Discovers topology •  Cross-Cluster detection •  Foundation for job distribution
64 TAKE AWAY Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution org.apache.sling.event •  Uses Sling Discovery •  New JobConsumer API and job topics •  New JobManager API for creating new distributed jobs •  Distributes jobs based on available job topics and job queue configuration. •  Distributes in the whole topology, including clustered and non- clustered instances •  Can execute cluster local jobs only
65 TAKE AWAY Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution com.adobe.granite.offloading.core •  Builds on top of Sling Distributed Jobs •  Does not perform distribution •  Detects jobs distributed to non-clustered instances •  Transports the jobs and payload to non-clustered instances •  Uses replication for transport •  Does not execute jobs
66 TAKE AWAY Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution com.adobe.granite.workflow.core •  Defines a job consumer to distribute the execution of whole workflows •  Defines topic com/adobe/granite/workflow/ offloading •  Implements WorkflowOffloadingJobConsumer component •  Supports clustered and non clustered installations
67 TAKE AWAY Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution cq-dam-core •  Makes use of com/adobe/granite/workflow/ offloading topic from Workflow Distribution •  New workflow step (external step) that creates a new job on topic com/adobe/granite/workflow/ offloading •  New “DAM Update Asset Offloading” workflow •  Supports clustered and non clustered configurations
68 TAKE AWAY Potential Future Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution Felix OSGi Event Admin FromEventingtoJobProcessing
69 TAKE AWAY Potential Future Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution Felix OSGi Event Admin FromEventingtoJobProcessing New OSGi Specification • Distributed Eventing • Cloud Computing
70 TAKE AWAY Potential Future Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution Felix OSGi Event Admin FromEventingtoJobProcessing Job Distribution • Improved load balancing • Pull based distribution
71 TAKE AWAY Potential Future Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution Felix OSGi Event Admin FromEventingtoJobProcessing Offloading • As part of job distribution • Even simpler setup
72 TAKE AWAY Questions? Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution Felix OSGi Event Admin FromEventingtoJobProcessing
73

More Related Content

PDF
Understanding Sling Models in AEM
Accunity Software
 
PPTX
AEM and Sling
Lo Ki
 
PPTX
Osgi
Heena Madan
 
PDF
Hacking Adobe Experience Manager sites
Mikhail Egorov
 
PPTX
Comprehensive Terraform Training
Yevgeniy Brikman
 
PDF
Hands-on Helm
Docker, Inc.
 
PDF
Inter-Sling communication with message queue
Tomasz Rękawek
 
PDF
AEM hacker - approaching Adobe Experience Manager webapps in bug bounty programs
Mikhail Egorov
 
Understanding Sling Models in AEM
Accunity Software
 
AEM and Sling
Lo Ki
 
Osgi
Heena Madan
 
Hacking Adobe Experience Manager sites
Mikhail Egorov
 
Comprehensive Terraform Training
Yevgeniy Brikman
 
Hands-on Helm
Docker, Inc.
 
Inter-Sling communication with message queue
Tomasz Rękawek
 
AEM hacker - approaching Adobe Experience Manager webapps in bug bounty programs
Mikhail Egorov
 

What's hot (20)

PPTX
OWASP AppSecCali 2015 - Marshalling Pickles
Christopher Frohoff
 
PPTX
Dependency injection presentation
Ahasanul Kalam Akib
 
PPTX
Experience and Content Fragment
Heena Madan
 
PDF
우아한 모노리스
Arawn Park
 
PDF
TypeScript - An Introduction
NexThoughts Technologies
 
PPTX
AEM Rich Text Editor (RTE) Deep Dive
Hanish Bansal
 
PDF
Aem maintenance
Ashokkumar T A
 
PDF
Event source 학습 내용 공유
beom kyun choi
 
PPT
Spring mvc
Lhouceine OUHAMZA
 
PDF
Anatomy of a Spring Boot App with Clean Architecture - Spring I/O 2023
Steve Pember
 
PPTX
Sling models by Justin Edelson
AEM HUB
 
PPTX
Packer
Nitesh Saini
 
PDF
이벤트 기반 분산 시스템을 향한 여정
Arawn Park
 
PDF
AWS 기반의 마이크로 서비스 아키텍쳐 구현 방안 :: 김필중 :: AWS Summit Seoul 20
Amazon Web Services Korea
 
PDF
Scaling containers with KEDA
Nilesh Gule
 
PDF
마이크로서비스 기반 클라우드 아키텍처 구성 모범 사례 - 윤석찬 (AWS 테크에반젤리스트)
Amazon Web Services Korea
 
PDF
[수정본] 우아한 객체지향
Young-Ho Cho
 
PPTX
Everything You Need To Know About Persistent Storage in Kubernetes
The {code} Team
 
PDF
What is Jenkins | Jenkins Tutorial for Beginners | Edureka
Edureka!
 
PPTX
CI/CD on AWS
Bhargav Amin
 
OWASP AppSecCali 2015 - Marshalling Pickles
Christopher Frohoff
 
Dependency injection presentation
Ahasanul Kalam Akib
 
Experience and Content Fragment
Heena Madan
 
우아한 모노리스
Arawn Park
 
TypeScript - An Introduction
NexThoughts Technologies
 
AEM Rich Text Editor (RTE) Deep Dive
Hanish Bansal
 
Aem maintenance
Ashokkumar T A
 
Event source 학습 내용 공유
beom kyun choi
 
Spring mvc
Lhouceine OUHAMZA
 
Anatomy of a Spring Boot App with Clean Architecture - Spring I/O 2023
Steve Pember
 
Sling models by Justin Edelson
AEM HUB
 
Packer
Nitesh Saini
 
이벤트 기반 분산 시스템을 향한 여정
Arawn Park
 
AWS 기반의 마이크로 서비스 아키텍쳐 구현 방안 :: 김필중 :: AWS Summit Seoul 20
Amazon Web Services Korea
 
Scaling containers with KEDA
Nilesh Gule
 
마이크로서비스 기반 클라우드 아키텍처 구성 모범 사례 - 윤석찬 (AWS 테크에반젤리스트)
Amazon Web Services Korea
 
[수정본] 우아한 객체지향
Young-Ho Cho
 
Everything You Need To Know About Persistent Storage in Kubernetes
The {code} Team
 
What is Jenkins | Jenkins Tutorial for Beginners | Edureka
Edureka!
 
CI/CD on AWS
Bhargav Amin
 
Ad

Viewers also liked (20)

PDF
Apache Sling - Distributed Eventing, Discovery, and Jobs (adaptTo 2013)
Carsten Ziegeler
 
PDF
AEM Best Practices for Component Development
Gabriel Walt
 
PPT
Adobe Experience Manager - Replication deep dive
mwmd
 
PDF
Sling Dynamic Include
Tomasz Rękawek
 
PPTX
Smart Interpretation - Fast AEM Modelling - SAGEEP 2017
Torben Bach
 
PDF
Scala for scripting
day
 
PDF
Scala4sling
day
 
PPTX
Bombardier adobe aem msm implementation
Ken Knitter
 
PDF
Use Case: Building OSGi Enterprise Applications (QCon 14)
Carsten Ziegeler
 
PDF
What's cool in the new and updated OSGi Specs
Carsten Ziegeler
 
PDF
What's cool in the new and updated OSGi specs
Carsten Ziegeler
 
PDF
Monitoring OSGi Applications with the Web Console
Carsten Ziegeler
 
PDF
Distributed Eventing in OSGi
Carsten Ziegeler
 
PDF
Introducing CQ 5.1
David Nuescheler
 
PPTX
CQ5 Development Setup, Maven Build and Deployment
6D Global
 
PDF
Hubot + Slack + AEM
Max Barrass
 
PPTX
Introdcution to Adobe CQ
Rest West
 
PPTX
User interface customization for aem6 circuit
Damien Antipa
 
PDF
OSGi, Scripting and REST, Building Webapps With Apache Sling
Carsten Ziegeler
 
PPTX
UI Customization in AEM 6.0
Gilles Knobloch
 
Apache Sling - Distributed Eventing, Discovery, and Jobs (adaptTo 2013)
Carsten Ziegeler
 
AEM Best Practices for Component Development
Gabriel Walt
 
Adobe Experience Manager - Replication deep dive
mwmd
 
Sling Dynamic Include
Tomasz Rękawek
 
Smart Interpretation - Fast AEM Modelling - SAGEEP 2017
Torben Bach
 
Scala for scripting
day
 
Scala4sling
day
 
Bombardier adobe aem msm implementation
Ken Knitter
 
Use Case: Building OSGi Enterprise Applications (QCon 14)
Carsten Ziegeler
 
What's cool in the new and updated OSGi Specs
Carsten Ziegeler
 
What's cool in the new and updated OSGi specs
Carsten Ziegeler
 
Monitoring OSGi Applications with the Web Console
Carsten Ziegeler
 
Distributed Eventing in OSGi
Carsten Ziegeler
 
Introducing CQ 5.1
David Nuescheler
 
CQ5 Development Setup, Maven Build and Deployment
6D Global
 
Hubot + Slack + AEM
Max Barrass
 
Introdcution to Adobe CQ
Rest West
 
User interface customization for aem6 circuit
Damien Antipa
 
OSGi, Scripting and REST, Building Webapps With Apache Sling
Carsten Ziegeler
 
UI Customization in AEM 6.0
Gilles Knobloch
 
Ad

Similar to Adobe AEM - From Eventing to Job Processing (20)

PDF
EVOLVE'13 | Enhance | Eventing to job Processing | Carsten Zeigler
Evolve The Adobe Digital Marketing Community
 
PDF
Distributed Eventing in OSGi - Carsten Ziegeler
mfrancis
 
KEY
Cooking a rabbit pie
Tomas Doran
 
PDF
Think BIG, Spend Small A Look at how WSO2 Can Help Scale Up with Less Cost
WSO2
 
PDF
Amazon SWF and Gordon
Jonathan Weiss
 
KEY
Modern Continuous Software Delivery
Martin Logan
 
PPTX
Moving to DevOps the Amazon Way
Amazon Web Services LATAM
 
PPTX
AWS Initiate - DevOps do Jeito Amazon
Amazon Web Services LATAM
 
PDF
CIRCUIT 2015 - 10 Things Apache Sling Can Do
ICF CIRCUIT
 
ODP
Scheduler_session
shivani garg
 
PDF
DevOps: Automate all the things
Mat Mannion
 
PDF
Netflix conductor
Viren Baraiya
 
PDF
AWS Community Day Ireland - Building roads and bridges in the last decade of ...
Heitor Lessa
 
KEY
Real time system_performance_mon
Tomas Doran
 
PDF
Simple Solutions for Complex Problems - Boulder Meetup
Apcera
 
PDF
Simple Solutions for Complex Problems - Boulder Meetup
NATS
 
PDF
Serverless best practices plus design principles 20m version
Heitor Lessa
 
PDF
Genomics on aws-webinar-april2018
Brendan Bouffler
 
PDF
Journey towards serverless infrastructure
Ville Seppänen
 
PPTX
Meetup gitlab intro in seoul
Guenjun Yoo
 
EVOLVE'13 | Enhance | Eventing to job Processing | Carsten Zeigler
Evolve The Adobe Digital Marketing Community
 
Distributed Eventing in OSGi - Carsten Ziegeler
mfrancis
 
Cooking a rabbit pie
Tomas Doran
 
Think BIG, Spend Small A Look at how WSO2 Can Help Scale Up with Less Cost
WSO2
 
Amazon SWF and Gordon
Jonathan Weiss
 
Modern Continuous Software Delivery
Martin Logan
 
Moving to DevOps the Amazon Way
Amazon Web Services LATAM
 
AWS Initiate - DevOps do Jeito Amazon
Amazon Web Services LATAM
 
CIRCUIT 2015 - 10 Things Apache Sling Can Do
ICF CIRCUIT
 
Scheduler_session
shivani garg
 
DevOps: Automate all the things
Mat Mannion
 
Netflix conductor
Viren Baraiya
 
AWS Community Day Ireland - Building roads and bridges in the last decade of ...
Heitor Lessa
 
Real time system_performance_mon
Tomas Doran
 
Simple Solutions for Complex Problems - Boulder Meetup
Apcera
 
Simple Solutions for Complex Problems - Boulder Meetup
NATS
 
Serverless best practices plus design principles 20m version
Heitor Lessa
 
Genomics on aws-webinar-april2018
Brendan Bouffler
 
Journey towards serverless infrastructure
Ville Seppänen
 
Meetup gitlab intro in seoul
Guenjun Yoo
 

More from Carsten Ziegeler (12)

PDF
Service oriented web development with OSGi
Carsten Ziegeler
 
PDF
JCR - Java Content Repositories
Carsten Ziegeler
 
PDF
Embrace Change - Embrace OSGi
Carsten Ziegeler
 
PDF
JCR In Action (ApacheCon US 2009)
Carsten Ziegeler
 
PDF
Apache Sling : JCR, OSGi, Scripting and REST
Carsten Ziegeler
 
PDF
Embrace OSGi
Carsten Ziegeler
 
PDF
Apache Sanselan (ApacheCon US 2007 FFT)
Carsten Ziegeler
 
PDF
Apache iBatis (ApacheCon US 2007)
Carsten Ziegeler
 
PDF
JCR In Action (ApacheCon US 2007)
Carsten Ziegeler
 
PDF
Apache Portals Panel (ApacheCon US 2007)
Carsten Ziegeler
 
PDF
JCR In Action (ApacheCon EU 2008)
Carsten Ziegeler
 
PDF
Maven SCR Plugin (ApacheCon EU 2008 - FFT)
Carsten Ziegeler
 
Service oriented web development with OSGi
Carsten Ziegeler
 
JCR - Java Content Repositories
Carsten Ziegeler
 
Embrace Change - Embrace OSGi
Carsten Ziegeler
 
JCR In Action (ApacheCon US 2009)
Carsten Ziegeler
 
Apache Sling : JCR, OSGi, Scripting and REST
Carsten Ziegeler
 
Embrace OSGi
Carsten Ziegeler
 
Apache Sanselan (ApacheCon US 2007 FFT)
Carsten Ziegeler
 
Apache iBatis (ApacheCon US 2007)
Carsten Ziegeler
 
JCR In Action (ApacheCon US 2007)
Carsten Ziegeler
 
Apache Portals Panel (ApacheCon US 2007)
Carsten Ziegeler
 
JCR In Action (ApacheCon EU 2008)
Carsten Ziegeler
 
Maven SCR Plugin (ApacheCon EU 2008 - FFT)
Carsten Ziegeler
 

Recently uploaded (20)

PDF
Building Integrated photovoltaic BIPV_UPV.pdf
SandeepSingh286037
 
PPTX
Machine Learning_overview_presentation.pptx
kondavamsidharreddy2
 
PDF
Network Security Unit 5.pdf for BCA BBA.
Serpent6
 
PDF
Advanced methodologies resolving dimensionality complications for autism neur...
IAESIJAI
 
PDF
7 ChatGPT Prompts to Help You Define Your Ideal Customer Profile.pdf
SOFTTECHHUB
 
PDF
Agricultural_Statistics_at_a_Glance_2022_0.pdf
SandeepSingh286037
 
PPTX
Spectroscopy.pptx food analysis technology
nawahassan45
 
PPTX
Programs and apps: productivity, graphics, security and other tools
4mqw9zch22
 
PPT
“AI and Expert System Decision Support & Business Intelligence Systems”
ZubinRadhakrishnan
 
PDF
TokAI - TikTok AI Agent : The First AI Application That Analyzes 10,000+ Vira...
SOFTTECHHUB
 
PPT
Teaching material agriculture food technology
LiaRayya
 
PPTX
VMware vSphere Foundation How to Sell Presentation-Ver1.4-2-14-2024.pptx
blackmambaettijean
 
PPTX
20250228 LYD VKU AI Blended-Learning.pptx
DatVoNgoc
 
PDF
cuic standard and advanced reporting.pdf
SimoneTitaniumTomase
 
PDF
The Rise and Fall of 3GPP – Time for a Sabbatical?
3G4G
 
PPTX
Cloud computing and distributed systems.
kkkkkhan
 
PDF
Spectral efficient network and resource selection model in 5G networks
IAESIJAI
 
PDF
Machine learning based COVID-19 study performance prediction
IAESIJAI
 
PPTX
MYSQL Presentation for SQL database connectivity
Swati270511
 
PPTX
Digital-Transformation-Roadmap-for-Companies.pptx
David Malick Dieng
 
Building Integrated photovoltaic BIPV_UPV.pdf
SandeepSingh286037
 
Machine Learning_overview_presentation.pptx
kondavamsidharreddy2
 
Network Security Unit 5.pdf for BCA BBA.
Serpent6
 
Advanced methodologies resolving dimensionality complications for autism neur...
IAESIJAI
 
7 ChatGPT Prompts to Help You Define Your Ideal Customer Profile.pdf
SOFTTECHHUB
 
Agricultural_Statistics_at_a_Glance_2022_0.pdf
SandeepSingh286037
 
Spectroscopy.pptx food analysis technology
nawahassan45
 
Programs and apps: productivity, graphics, security and other tools
4mqw9zch22
 
“AI and Expert System Decision Support & Business Intelligence Systems”
ZubinRadhakrishnan
 
TokAI - TikTok AI Agent : The First AI Application That Analyzes 10,000+ Vira...
SOFTTECHHUB
 
Teaching material agriculture food technology
LiaRayya
 
VMware vSphere Foundation How to Sell Presentation-Ver1.4-2-14-2024.pptx
blackmambaettijean
 
20250228 LYD VKU AI Blended-Learning.pptx
DatVoNgoc
 
cuic standard and advanced reporting.pdf
SimoneTitaniumTomase
 
The Rise and Fall of 3GPP – Time for a Sabbatical?
3G4G
 
Cloud computing and distributed systems.
kkkkkhan
 
Spectral efficient network and resource selection model in 5G networks
IAESIJAI
 
Machine learning based COVID-19 study performance prediction
IAESIJAI
 
MYSQL Presentation for SQL database connectivity
Swati270511
 
Digital-Transformation-Roadmap-for-Companies.pptx
David Malick Dieng
 

Adobe AEM - From Eventing to Job Processing

  • 1. FROM EVENTING TO JOB PROCESSING Carsten Ziegeler | Adobe Research Switzerland 1
  • 2. 2 •  RnD Team at Adobe Research Switzerland •  Co-founder Adobe Granite •  OSGi Core Platform and Enterprise Expert Groups •  Member of the ASF •  Current PMC Chair of Apache Sling •  Apache Sling, Felix, ACE •  Conference Speaker •  Technical Reviewer •  Article/Book Author cziegele@adobe.com @cziegeler ABOUT
  • 3. 3 OVERVIEW Where to fit in the stack Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution Felix OSGi Event Admin FromEventingtoJobProcessing
  • 4. 4 OVERVIEW Where to fit in the stack Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution Felix OSGi Event Admin FromEventingtoJobProcessing
  • 5. 5 OSGI EVENT ADMIN Publish / Subscribe Model OSGi Event Admin Component A publish deliver Component X Component Y
  • 6. 6 •  OSGi event is a data object with •  Topic (hierarchical namespace) •  Properties (key-value-pairs) •  Page Event •  Topic: com/day/cq/wcm/core/page •  Properties: path, change type (add/remove/edit) etc. OSGI EVENT ADMIN Publish / Subscribe Model
  • 7. 7 •  Publisher creates event object •  Sends event through EventAdmin service •  Either sync or async delivery •  Subscriber is an OSGi service (EventHandler) •  Service registration properties •  Interested topic(s) •  com/day/cq/wcm/core/* •  Additional filters (optional) •  (type="add“) OSGI EVENT ADMIN Publish / Subscribe Model
  • 8. 8 •  Immediate delivery to available subscribers •  No guarantee of delivery •  No distributed delivery OSGI EVENT ADMIN Publish / Subscribe Model
  • 9. 9 •  Immediate delivery to available subscribers •  No guarantee of delivery •  No distributed delivery OSGI EVENT ADMIN Publish / Subscribe Model DiscoverySling Job Distribution
  • 10. 10 OVERVIEW Where to fit in the stack Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution
  • 11. 11 OVERVIEW Where to fit in the stack Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution New in 5.6.1
  • 13. 13 Instance: Unique Id (Sling ID) TOPOLOGIES I Apache Sling Discovery Clustered CRXCRX ID : A ID : X ID : 42ID : 1 Single Instance Instance 1 Instance 2 Instance 3
  • 14. 14 •  Instance: Unique Id (Sling ID) •  Cluster: Unique Id and leader TOPOLOGIES I Apache Sling Discovery Cluster 99Cluster 35 Clustered CRXCRX ID : A ID : X ID : 42ID : 1 Single Instance Instance 1 Instance 2 Instance 3 Leader Leader
  • 15. 15 •  Topology: Set of clusters TOPOLOGIES I Apache Sling Discovery Cluster 99Cluster 35 Clustered CRXCRX ID : A ID : X ID : 42ID : 1 Single Instance Instance 1 Instance 2 Instance 3 Leader Leader TopologyTopology •  Instance: Unique Id (Sling ID) •  Cluster: Unique Id and leader
  • 16. 16 TOPOLOGIES I Apache Sling Discovery •  Instance: Unique Id (Sling ID) •  Cluster: Unique Id and leader •  Topology: Set of clusters Cluster 99 Clustered CRXCRX ID : A ID : X ID : 42ID : 1 Single Instance Instance 1 Instance 2 Instance 3 Leader Topology Cluster 35 Leader
  • 17. Cluster 99 17 •  Instance •  Sling ID •  Optional: Name and description •  Belongs to a cluster •  Might be the cluster leader •  Additional properties which are distributed •  Extensible through own services (PropertyProvider) •  E.g. data center, region or enabled job topics •  Cluster •  Elects (stable) leader •  Stable instance ordering •  TopologyEventListener: receives events on topology changes TOPOLOGIES II Apache Sling Discovery ID : 42 Instance 3 Topology Leader
  • 18. 18 OVERVIEW Where to fit in the stack Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution
  • 19. 19 •  Job : Guaranteed processing, exactly once •  Exactly one job consumer •  Started by client code, e.g. for replication, workflow... •  Job topic •  Payload is a serializable map JOB HANDLING I Apache Sling Job Handling
  • 20. 20 •  Sling Job Manager handles and distributes jobs •  Delivers job to a job consumer… •  …and waits for response •  Retry and failover •  Notification listeners (fail, retry, success) JOB HANDLING I Apache Sling Job Handling
  • 21. 21 STARTING / PROCESSING A JOB I Apache Sling Job Handling public interface JobConsumer { String PROPERTY_TOPICS = "job.topics"; enum JobResult { OK, FAILED, CANCEL, ASYNC } JobResult process(Job job); } public interface JobManager { Job addJob(String topic, String optionalName, Map<String, Object> properties); … } Starting a job Processing a job Note: Starting/processing of jobs through Event Admin is deprecated but still supported New in 5.6.1
  • 22. 22 @Component @Service(value={JobConsumer.class}) @Property(name=JobConsumer.PROPERTY_TOPICS, value="org/apache/sling/jobs/backup") public class BackupJobConsumer implements JobConsumer { @Override public JobResult process(final Job job) { // do backup return JobResult.OK; } } STARTING / PROCESSING A JOB II Apache Sling Job Handling New in 5.6.1
  • 23. 23 •  New jobs are immediately persisted (resource tree / repository) •  Jobs are “pushed” to the processing instance •  Processing instances use different queues •  Associated with job topic(s) •  Main queue •  0..n custom queues •  For example: replication agent queue or workflow queue JOB HANDLING II Apache Sling Job Handling
  • 24. 24 •  Queue is configurable •  Queue is started on demand in own thread •  And stopped if unused for some time •  Types •  Ordered queue (eg replication) •  Parallel queues: Plain and Topic Round Robin (eg workflow) •  Limit for parallel threads per queue •  Number of retries (-1 = endless) •  Retry delay •  Thread priority JOB QUEUE Apache Sling Job Handling
  • 25. 25 •  Job Manager Configuration = Main Queue Configuration •  Maximum parallel jobs (15) •  Retries (10) •  Retry Delay •  Eventing Thread Pool Configuration •  Used by all queues •  Pool size (35) = Maximum parallel jobs for a single instance ADDITIONAL CONFIGURATIONS Apache Sling Job Handling
  • 26. 26 MONITORING – WEB CONSOLE Apache Sling Job Handling
  • 27. 27 MONITORING – WEB CONSOLE Apache Sling Job Handling
  • 28. 28 •  Each instance determines enabled job topics •  Derived from Job Consumers (new API required) •  Can be whitelisted/blacklisted (in Job Consumer Manager) •  Announced through Topology •  Job Distribution depends on enabled job topics and queue type •  Potential set of instances derived from topology (enabled job topics) •  Ordered : processing on leader only, one job after the other •  Parallel: Round robin distribution on all potential instances •  Local cluster instances have preference •  Failover •  Instance crash: leader redistributes jobs to available instances •  Leader change taken into account •  On enabled job topics changes: potential redistribution JOB DISTRIBUTION Apache Sling Job Handling
  • 29. 29 •  Scalability in AEM: •  DAM Ingestion •  Non-Clustered installation requirement •  The term Offloading: •  In AEM used for all things job distribution and topology in clustered and non- clustered installations, e.g. ‘Offloading Browser’ •  More technically it’s ‘only’ a little add-on in Granite to Sling Job Distribution for handling non-clustered installations WHY OFFLOADING
  • 30. 30 OVERVIEW Where to fit in the stack Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution
  • 31. 31 OVERVIEW Where to fit in the stack Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution
  • 32. 32 SLING JOB DISTRIBUTION Topology Instance Sling ID: 1 Job Manager Instance Sling ID: 2 Job Manager Instance Sling ID: 3 Job Manager Instance Sling ID: 4 Job Manager Job Consumer Topic: A Job Consumer Topic: B Job Consumer Topic: C
  • 33. 33 SLING JOB DISTRIBUTION Instance Sling ID: 1 Job Manager Instance Sling ID: 2 Job Manager Instance Sling ID: 3 Job Manager Instance Sling ID: 4 Job ManagerA Job Consumer Topic: A Job Consumer Topic: B A:2 Job Consumer Topic: CJob Topology
  • 34. 34 SLING JOB DISTRIBUTION Instance Sling ID: 1 Job Manager Instance Sling ID: 2 Job Manager Instance Sling ID: 3 Job Manager Instance Sling ID: 4 Job ManagerB Job Consumer Topic: A Job Consumer Topic: B B:3 Job Consumer Topic: CJob Topology
  • 35. 35 SLING JOB DISTRIBUTION Instance Sling ID: 1 Job Manager Instance Sling ID: 2 Job Manager Instance Sling ID: 3 Job Manager Instance Sling ID: 4 Job ManagerC Job Consumer Topic: A Job Consumer Topic: B C:4 Job Consumer Topic: CJob ? Topology
  • 36. 36 SLING JOB DISTRIBUTION Instance Sling ID: 1 Job Manager Instance Sling ID: 2 Job Manager Instance Sling ID: 3 Job Manager Instance Sling ID: 4 Job ManagerC Job Consumer Topic: A Job Consumer Topic: B C:4 Job Consumer Topic: CJob Offloading Framework Topology
  • 37. 37 •  Detects offloading jobs •  Transport of job and job payload between origin and target instance •  Uses replication for the transport •  No distribution of jobs •  No execution of jobs OFFLOADING FRAMEWORK Overview Instance Sling ID: 1 Job Manager Offloading Job Manager C:4 Instance Sling ID: 4 Job Manager Job Consumer Topic: C Offloading Job Manager C:4 C Job Replication 1 2 3 5 4 6 7 Topology
  • 38. 38 •  Replication agents are created automatically •  Uses naming convention •  Needs manual adjustments (replication user) OFFLOADING FRAMEWORK Replication Worker Sling ID: 4 Author Sling ID: 1 offloading_4 (outgoing agent) offloading_reverse_4 (reverse agent) offloading_outbox (outbox agent)
  • 39. 39 •  Additional properties required •  Offloading job input •  Property: OffloadingJobProperties. INPUT_PAYLOAD (offloading.input.payload) •  Offloading job output •  Property: OffloadingJobProperties. OUTPUT_PAYLOAD (offloading.output.payload) •  Takes comma separated list of paths •  Used to build the replication package •  Job sender needs to set these properties for offloading to work! OFFLOADING FRAMEWORK Job Payload
  • 40. 40 •  Configures Job Consumers •  Configures the topic white/black listing properties of each instance •  What jobs to execute on what instance •  Configures the distribution •  Configuration applies for both, clustered and non-clustered installations OFFLOADING BROWSER UI
  • 44. 44 OVERVIEW Where to fit in the stack Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution
  • 45. 45 •  New JobConsumer •  Class: WorkflowOffloadingJobConsumer •  Topic: com/adobe/granite/workflow/offloading •  Can launch new workflows •  Expects the workflow model on the job payload •  Expects the workflow payload on the job payload •  For use with clustered and non-clustered installations WORKFLOW DISTRIBUTION
  • 46. 46 @Component @Service @Property(name = JobConsumer.PROPERTY_TOPICS, value = WorkflowOffloadingJobConsumer.TOPIC) public class WorkflowOffloadingJobConsumer implements JobConsumer { public static final String TOPIC = "com/adobe/granite/workflow/offloading"; public static final String WORKFLOW_OFFLOADING_MODEL = "offloading.workflow.model"; public static final String WORKFLOW_OFFLOADING_PAYLOAD = "offloading.workflow.payload”; public JobResult process(Job job) { // read workflow model and payload from job payload String modelPath= job.getProperty(WORKFLOW_OFFLOADING_MODEL , ""); String payloadPath= job.getProperty(WORKFLOW_OFFLOADING_PAYLOAD , ""); // get/create WorkflowSession, WorkflowModel and WorkflowData objects WorkflowSession wfSession = ..; WorkflowModel wfModel = ..; WorkflowData wfData = ..; // start the workflow wfSession.startWorkflow(wfModel, wfData, metaData); // all good return JobResutl.OK; } } WORKFLOW DISTRIBUTION Job Consumer (Simplified)
  • 47. 47 @Component @Service @Property(name = JobConsumer.PROPERTY_TOPICS, value = WorkflowOffloadingJobConsumer.TOPIC) public class WorkflowOffloadingJobConsumer implements JobConsumer { public static final String TOPIC = "com/adobe/granite/workflow/offloading"; public static final String WORKFLOW_OFFLOADING_MODEL = "offloading.workflow.model"; public static final String WORKFLOW_OFFLOADING_PAYLOAD = "offloading.workflow.payload”; public JobResult process(Job job) { // read workflow model and payload from job payload String modelPath= job.getProperty(WORKFLOW_OFFLOADING_MODEL , ""); String payloadPath= job.getProperty(WORKFLOW_OFFLOADING_PAYLOAD , ""); // get/create WorkflowSession, WorkflowModel and WorkflowData objects WorkflowSession wfSession = ..; WorkflowModel wfModel = ..; WorkflowData wfData = ..; // start the workflow wfSession.startWorkflow(wfModel, wfData, metaData); // all good return JobResutl.OK; } } WORKFLOW DISTRIBUTION Job Consumer (Simplified) •  Define the job topic
  • 48. 48 @Component @Service @Property(name = JobConsumer.PROPERTY_TOPICS, value = WorkflowOffloadingJobConsumer.TOPIC) public class WorkflowOffloadingJobConsumer implements JobConsumer { public static final String TOPIC = "com/adobe/granite/workflow/offloading"; public static final String WORKFLOW_OFFLOADING_MODEL = "offloading.workflow.model"; public static final String WORKFLOW_OFFLOADING_PAYLOAD = "offloading.workflow.payload”; public JobResult process(Job job) { // read workflow model and payload from job payload String modelPath= job.getProperty(WORKFLOW_OFFLOADING_MODEL , ""); String payloadPath= job.getProperty(WORKFLOW_OFFLOADING_PAYLOAD , ""); // get/create WorkflowSession, WorkflowModel and WorkflowData objects WorkflowSession wfSession = ..; WorkflowModel wfModel = ..; WorkflowData wfData = ..; // start the workflow wfSession.startWorkflow(wfModel, wfData, metaData); // all good return JobResutl.OK; } } WORKFLOW DISTRIBUTION Job Consumer (Simplified) •  Create service component •  Must register with topic •  Implement new JobConsumer interface
  • 49. 49 @Component @Service @Property(name = JobConsumer.PROPERTY_TOPICS, value = WorkflowOffloadingJobConsumer.TOPIC) public class WorkflowOffloadingJobConsumer implements JobConsumer { public static final String TOPIC = "com/adobe/granite/workflow/offloading"; public static final String WORKFLOW_OFFLOADING_MODEL = "offloading.workflow.model"; public static final String WORKFLOW_OFFLOADING_PAYLOAD = "offloading.workflow.payload”; public JobResult process(Job job) { // read workflow model and payload from job payload String modelPath= job.getProperty(WORKFLOW_OFFLOADING_MODEL , ""); String payloadPath= job.getProperty(WORKFLOW_OFFLOADING_PAYLOAD , ""); // get/create WorkflowSession, WorkflowModel and WorkflowData objects WorkflowSession wfSession = ..; WorkflowModel wfModel = ..; WorkflowData wfData = ..; // start the workflow wfSession.startWorkflow(wfModel, wfData, metaData); // all good return JobResutl.OK; } } WORKFLOW DISTRIBUTION Job Consumer (Simplified) •  Access job properties (payload) •  Read workflow model and payload from job properties
  • 50. 50 @Component @Service @Property(name = JobConsumer.PROPERTY_TOPICS, value = WorkflowOffloadingJobConsumer.TOPIC) public class WorkflowOffloadingJobConsumer implements JobConsumer { public static final String TOPIC = "com/adobe/granite/workflow/offloading"; public static final String WORKFLOW_OFFLOADING_MODEL = "offloading.workflow.model"; public static final String WORKFLOW_OFFLOADING_PAYLOAD = "offloading.workflow.payload”; public JobResult process(Job job) { // read workflow model and payload from job payload String modelPath= job.getProperty(WORKFLOW_OFFLOADING_MODEL , ""); String payloadPath= job.getProperty(WORKFLOW_OFFLOADING_PAYLOAD , ""); // get/create WorkflowSession, WorkflowModel and WorkflowData objects WorkflowSession wfSession = ..; WorkflowModel wfModel = ..; WorkflowData wfData = ..; // start the workflow wfSession.startWorkflow(wfModel, wfData, metaData); // all good return JobResutl.OK; } } WORKFLOW DISTRIBUTION Job Consumer (Simplified) •  Workflow specific •  Use workflow API to start workflow for the given model and payload
  • 51. 51 @Component @Service @Property(name = JobConsumer.PROPERTY_TOPICS, value = WorkflowOffloadingJobConsumer.TOPIC) public class WorkflowOffloadingJobConsumer implements JobConsumer { public static final String TOPIC = "com/adobe/granite/workflow/offloading"; public static final String WORKFLOW_OFFLOADING_MODEL = "offloading.workflow.model"; public static final String WORKFLOW_OFFLOADING_PAYLOAD = "offloading.workflow.payload”; public JobResult process(Job job) { // read workflow model and payload from job payload String modelPath= job.getProperty(WORKFLOW_OFFLOADING_MODEL , ""); String payloadPath= job.getProperty(WORKFLOW_OFFLOADING_PAYLOAD , ""); // get/create WorkflowSession, WorkflowModel and WorkflowData objects WorkflowSession wfSession = ..; WorkflowModel wfModel = ..; WorkflowData wfData = ..; // start the workflow wfSession.startWorkflow(wfModel, wfData, metaData); // all good return JobResutl.OK; } } WORKFLOW DISTRIBUTION Job Consumer (Simplified) •  Use JobResult enumeration to report back the job status
  • 52. 52 OVERVIEW Where to fit in the stack Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution
  • 53. 53 •  Default ingestion workflow: “DAM Update Asset” •  Load is put on the instance where the workflow is started, usually the author •  New ingestion workflow: “DAM Update Asset Offloading” •  Needs to be manually enabled by changing the workflow launcher •  New workflow model with a single step: AssetOffloadingProcess •  Uses WorkflowExternalProcess API •  Creates a new job on topic: com/adobe/granite/workflow/offloading •  Allows distributing the default ingestion workflow •  Load is put on the instance where the job is distributed to •  Can be used to distribute in clustered and non-clustered installations DAM INGESTION
  • 54. 54 @Component @Service public class AssetOffloadingProcess implements WorkflowExternalProcess { @Reference private JobManager jobManager; private static final String TOPIC = "com/adobe/granite/workflow/offloading"; public Serializable execute(WorkItem workItem, WorkflowSession workflowSession, MetaDataMap metaDataMap){ Asset asset = ..; String workflowModel = “/etc/workflow/models/dam/update_asset/jcr:content/model”; String workflowPayload = “/content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg”; ValueMap jobProperties = new ValueMapDecorator(new HashMap<String, Object>()); jobProperties.put(WORKFLOW_OFFLOADING_MODEL, workflowModel); jobProperties.put(WORKFLOW_OFFLOADING_PAYLOAD, workflowPayload); String offloadingInput = “/etc/workflow/models/dam/update_asset/jcr:content/model, /content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg” ; String offloadingOutput = “/etc/workflow/models/dam/update_asset/jcr:content/model, /content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg” ; jobProperties.put(OffloadingJobProperties.INPUT_PAYLOAD.propertyName(), offloadingInput); jobProperties.put(OffloadingJobProperties.OUTPUT_PAYLOAD.propertyName(), offloadingOutput); Job offloadingJob = jobManager.addJob(TOPIC, null, jobProperties); return offloadingJob.getId(); } DAM INGESTION Create Job (from workflow step)
  • 55. 55 @Component @Service public class AssetOffloadingProcess implements WorkflowExternalProcess { @Reference private JobManager jobManager; private static final String TOPIC = "com/adobe/granite/workflow/offloading"; public Serializable execute(WorkItem workItem, WorkflowSession workflowSession, MetaDataMap metaDataMap){ Asset asset = ..; String workflowModel = “/etc/workflow/models/dam/update_asset/jcr:content/model”; String workflowPayload = “/content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg”; ValueMap jobProperties = new ValueMapDecorator(new HashMap<String, Object>()); jobProperties.put(WORKFLOW_OFFLOADING_MODEL, workflowModel); jobProperties.put(WORKFLOW_OFFLOADING_PAYLOAD, workflowPayload); String offloadingInput = “/etc/workflow/models/dam/update_asset/jcr:content/model, /content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg” ; String offloadingOutput = “/etc/workflow/models/dam/update_asset/jcr:content/model, /content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg” ; jobProperties.put(OffloadingJobProperties.INPUT_PAYLOAD.propertyName(), offloadingInput); jobProperties.put(OffloadingJobProperties.OUTPUT_PAYLOAD.propertyName(), offloadingOutput); Job offloadingJob = jobManager.addJob(TOPIC, null, jobProperties); return offloadingJob.getId(); } DAM INGESTION Create Job (from workflow step) •  Create service component •  Implement WorkflowExternalProcess interface •  Reference JobManager service
  • 56. 56 @Component @Service public class AssetOffloadingProcess implements WorkflowExternalProcess { @Reference private JobManager jobManager; private static final String TOPIC = "com/adobe/granite/workflow/offloading"; public Serializable execute(WorkItem workItem, WorkflowSession workflowSession, MetaDataMap metaDataMap){ Asset asset = ..; String workflowModel = “/etc/workflow/models/dam/update_asset/jcr:content/model”; String workflowPayload = “/content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg”; ValueMap jobProperties = new ValueMapDecorator(new HashMap<String, Object>()); jobProperties.put(WORKFLOW_OFFLOADING_MODEL, workflowModel); jobProperties.put(WORKFLOW_OFFLOADING_PAYLOAD, workflowPayload); String offloadingInput = “/etc/workflow/models/dam/update_asset/jcr:content/model, /content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg” ; String offloadingOutput = “/etc/workflow/models/dam/update_asset/jcr:content/model, /content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg” ; jobProperties.put(OffloadingJobProperties.INPUT_PAYLOAD.propertyName(), offloadingInput); jobProperties.put(OffloadingJobProperties.OUTPUT_PAYLOAD.propertyName(), offloadingOutput); Job offloadingJob = jobManager.addJob(TOPIC, null, jobProperties); return offloadingJob.getId(); } DAM INGESTION Create Job (from workflow step) •  DAM and Workflow specific •  Resolve to Asset •  Read model from meta data •  Read workflow payload from Asset path
  • 57. 57 public Serializable execute(WorkItem workItem, WorkflowSession workflowSession, MetaDataMap metaDataMap){ Asset asset = ..; String workflowModel = “/etc/workflow/models/dam/update_asset/jcr:content/model”; String workflowPayload = “/content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg”; ValueMap jobProperties = new ValueMapDecorator(new HashMap<String, Object>()); jobProperties.put(WORKFLOW_OFFLOADING_MODEL, workflowModel); jobProperties.put(WORKFLOW_OFFLOADING_PAYLOAD, workflowPayload); String offloadingInput = “/etc/workflow/models/dam/update_asset/jcr:content/model, /content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg” ; String offloadingOutput = “/etc/workflow/models/dam/update_asset/jcr:content/model, /content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg” ; jobProperties.put(OffloadingJobProperties.INPUT_PAYLOAD.propertyName(), offloadingInput); jobProperties.put(OffloadingJobProperties.OUTPUT_PAYLOAD.propertyName(), offloadingOutput); Job offloadingJob = jobManager.addJob(TOPIC, null, jobProperties); return offloadingJob.getId(); } DAM INGESTION Create Job (from workflow step) •  ValueMap for job properties •  Put model and payload on job properties •  Used by the JobConsumer
  • 58. 58 public Serializable execute(WorkItem workItem, WorkflowSession workflowSession, MetaDataMap metaDataMap){ Asset asset = ..; String workflowModel = “/etc/workflow/models/dam/update_asset/jcr:content/model”; String workflowPayload = “/content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg”; ValueMap jobProperties = new ValueMapDecorator(new HashMap<String, Object>()); jobProperties.put(WORKFLOW_OFFLOADING_MODEL, workflowModel); jobProperties.put(WORKFLOW_OFFLOADING_PAYLOAD, workflowPayload); String offloadingInput = “/etc/workflow/models/dam/update_asset/jcr:content/model, /content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg” ; String offloadingOutput = “/etc/workflow/models/dam/update_asset/jcr:content/model, /content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg” ; jobProperties.put(OffloadingJobProperties.INPUT_PAYLOAD.propertyName(), offloadingInput); jobProperties.put(OffloadingJobProperties.OUTPUT_PAYLOAD.propertyName(), offloadingOutput); Job offloadingJob = jobManager.addJob(TOPIC, null, jobProperties); return offloadingJob.getId(); } DAM INGESTION Create Job (from workflow step) •  Build offloading payload properties •  Comma separated list of paths •  Put them on the job payload as well •  Only used for non-clustered distribution
  • 59. 59 public Serializable execute(WorkItem workItem, WorkflowSession workflowSession, MetaDataMap metaDataMap){ Asset asset = ..; String workflowModel = “/etc/workflow/models/dam/update_asset/jcr:content/model”; String workflowPayload = “/content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg”; ValueMap jobProperties = new ValueMapDecorator(new HashMap<String, Object>()); jobProperties.put(WORKFLOW_OFFLOADING_MODEL, workflowModel); jobProperties.put(WORKFLOW_OFFLOADING_PAYLOAD, workflowPayload); String offloadingInput = “/etc/workflow/models/dam/update_asset/jcr:content/model, /content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg” ; String offloadingOutput = “/etc/workflow/models/dam/update_asset/jcr:content/model, /content/dam/geometrixx-outdoors/articles/downhill-ski-conditioning.jpg” ; jobProperties.put(OffloadingJobProperties.INPUT_PAYLOAD.propertyName(), offloadingInput); jobProperties.put(OffloadingJobProperties.OUTPUT_PAYLOAD.propertyName(), offloadingOutput); Job offloadingJob = jobManager.addJob(TOPIC, null, jobProperties); return offloadingJob.getId(); } DAM INGESTION Create Job (from workflow step) •  Create job using JobManager service •  Use topic from job consumer •  Put job payload properties •  Return the jobId as the workflow process id (workflow specific)
  • 60. 60 @Component @Service public class AssetOffloadingProcess implements WorkflowExternalProcess { @Reference private JobManager jobManager; private static final String TOPIC = "com/adobe/granite/workflow/offloading"; public Serializable execute(WorkItem workItem, WorkflowSession workflowSession, MetaDataMap metaDataMap){ …. } public boolean hasFinished(Serializable externalProcessId, ..){ // returns null, if job is finished Job offloadingJob = jobManager.getJobById((String) externalProcessId); return offloadingJob == null; } } DAM INGESTION Create Job (from workflow step) •  Workflow API specific callback •  Process id = jobId, from execute() •  Query job by jobId •  Workflow step finished when job is finished
  • 61. 61 •  Choose a job topic •  Create JobConsumer component and register with topic chosen •  To create a new job use new JobManager.addJob() API with the topic chosen and the job payload •  Add offloading payload to job payload •  Bundle and deploy JobConsumer on topology instances •  Enable/Disable the new topic on the instances, using Offloading Browser DEVELOPMENT - RECIPE
  • 62. 62 TAKE AWAY Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution
  • 63. 63 TAKE AWAY Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution org.apache.sling.discovery.api •  Discovers topology •  Cross-Cluster detection •  Foundation for job distribution
  • 64. 64 TAKE AWAY Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution org.apache.sling.event •  Uses Sling Discovery •  New JobConsumer API and job topics •  New JobManager API for creating new distributed jobs •  Distributes jobs based on available job topics and job queue configuration. •  Distributes in the whole topology, including clustered and non- clustered instances •  Can execute cluster local jobs only
  • 65. 65 TAKE AWAY Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution com.adobe.granite.offloading.core •  Builds on top of Sling Distributed Jobs •  Does not perform distribution •  Detects jobs distributed to non-clustered instances •  Transports the jobs and payload to non-clustered instances •  Uses replication for transport •  Does not execute jobs
  • 66. 66 TAKE AWAY Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution com.adobe.granite.workflow.core •  Defines a job consumer to distribute the execution of whole workflows •  Defines topic com/adobe/granite/workflow/ offloading •  Implements WorkflowOffloadingJobConsumer component •  Supports clustered and non clustered installations
  • 67. 67 TAKE AWAY Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution cq-dam-core •  Makes use of com/adobe/granite/workflow/ offloading topic from Workflow Distribution •  New workflow step (external step) that creates a new job on topic com/adobe/granite/workflow/ offloading •  New “DAM Update Asset Offloading” workflow •  Supports clustered and non clustered configurations
  • 68. 68 TAKE AWAY Potential Future Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution Felix OSGi Event Admin FromEventingtoJobProcessing
  • 69. 69 TAKE AWAY Potential Future Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution Felix OSGi Event Admin FromEventingtoJobProcessing New OSGi Specification • Distributed Eventing • Cloud Computing
  • 70. 70 TAKE AWAY Potential Future Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution Felix OSGi Event Admin FromEventingtoJobProcessing Job Distribution • Improved load balancing • Pull based distribution
  • 71. 71 TAKE AWAY Potential Future Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution Felix OSGi Event Admin FromEventingtoJobProcessing Offloading • As part of job distribution • Even simpler setup
  • 72. 72 TAKE AWAY Questions? Discovery Offloading Workflow Distribution DAM Ingestion Sling Granite AEM Job Distribution Felix OSGi Event Admin FromEventingtoJobProcessing
  • 73. 73