JMS Snap Pack

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Overview

Messaging is a method of communication between software components or applications. Java Message Service (JMS) API, a Java API, is a Message Oriented Middleware (MOM) API that allows applications to create, send, receive, and read messages using reliable, asynchronous, loosely coupled communication. This approach allows software components to communicate indirectly with each other. Benefits of this message include senders not needing to have precise knowledge of their receivers.

Use Snaps in this Snap Pack to:

  • Create JMS messages from incoming JSON documents.
  • Fetch the Java Message Service (JMS) messages.

Supported Versions

This Snap Pack is tested against:

  • JMS version 5.15.0.
  • JMS providers
    • Apache ActiveMQ v5.15.9
    • JBOSS HornetQ v2.4

The JMS specification supports two models:

  • Point-to-point
  • Publish and subscribe

Point-to-Point

A point-to-point (PTP) product or application is built on the concept of message queues, senders, and receivers. Each message is addressed to a specific queue, and receiving clients extract messages from the queues established to hold their messages. Queues retain all messages sent to them until the messages are consumed or expire.


 


PTP messaging has the following characteristics: 

  • Each message has only one consumer. 
  • A sender and a receiver of a message have no timing dependencies. The receiver can fetch the message whether or not it was running when the client sent the message. 
  • The receiver acknowledges the successful processing of a message.

Publish and Subscribe

In a publish/subscribe (pub/sub) product or application, clients address messages to a topic, which functions somewhat like a bulletin board. Publishers and subscribers are generally anonymous and can dynamically publish or subscribe to the content hierarchy. The system takes care of distributing the messages arriving from a topic’s multiple publishers to its multiple subscribers. Topics retain messages only as long as it takes to distribute them to current subscribers.


 


Pub/sub messaging has the following characteristics: 

  • Each message can have multiple consumers. 
  • Publishers and subscribers have a timing dependency. A client that subscribes to a topic can consume only messages published after the client has created a subscription, and the subscriber must continue to be active in order for it to consume messages.

JMS Building Blocks

JMS building blocks consist of:  

  • Connection
  • Message producers
  • Message consumers

 

Temporary Files

During execution, data processing on Snaplex nodes occurs principally in-memory as streaming and is unencrypted. When larger datasets are processed that exceeds the available compute memory, the Snap writes Pipeline data to local storage as unencrypted to optimize the performance. These temporary files are deleted when the Snap/Pipeline execution completes. You can configure the temporary data's location in the Global properties table of the Snaplex's node properties, which can also help avoid Pipeline errors due to the unavailability of space. For more information, see Temporary Folder in Configuration Options


Snap Pack History

 Click to view/expand
ReleaseSnap Pack VersionDateTypeUpdates

4.27

main12833

 

Stable

Upgraded with the latest SnapLogic Platform release.
4.26main11181 StableUpgraded with the latest SnapLogic Platform release.
4.25main9554
 
Stable

Upgraded with the latest SnapLogic Platform release.

4.24 Patch4.24patches9098 Latest

Enhances the JMS account in the JMS Snap Pack by updating the JNDI properties (java.naming.security.principal, java.naming.security.credentials) with username and password, to support the requirements of certain JMS servers.

4.24 Patch424patches9104 Latest

Fixes an issue in the JMS Consumer Snap, where different JMS SQS accounts interfere with each other while running on the same jcc node by using the AWSStaticCredentialProvider instead of the SystemPropertiesCredentialsProvider.

4.24main8556
StableUpgraded with the latest SnapLogic Platform release.
4.23main7430
 
StableUpgraded with the latest SnapLogic Platform release.
4.22 Patch422patches6992 Latest

Fixes the JMS Snap Pack by replacing JMS class loader for Oracle AQ (Advance Queuing).

4.22main6403
 
StableUpgraded with the latest SnapLogic Platform release.
4.21snapsmrc542

 

StableUpgraded with the latest SnapLogic Platform release.
4.20 Patch  jms8824 Latest

Fixes an issue in the JMS Consumer Snap due to which the Snap does not release the memory even after Pipeline termination, leading to huge memory spikes.

4.20 Patch jms8810 Latest

Fixes the connection leak issue in the JMS Producer Snap.

4.20 Patch jms8765 Latest

Fixes an issue with the JMS Consumer Snap that fails to successfully create durable subscribers when run in asynchronous mode.

4.20snapsmrc535
 
StableUpgraded with the latest SnapLogic Platform release.
4.19 Patch jms8420 Latest
  • Adds the following properties to the JMS Consumer and JMS Producer Snaps to enable retry and reconnect features:
    • Number of retries: Defines the number of times the Snap must re-attempt an operation before throwing a connection/network error.
    • Retry interval (milliseconds): Defines the time in milliseconds the Snap must wait between subsequent retries upon a connection/network error.
  • Enables the JMS Producer Snap to clean up stale connections.
  • Fixes the JMS Acknowledge Snap where the Snap fails unexpectedly without providing a reason.
4.19snaprsmrc528
 
StableUpgraded with the latest SnapLogic Platform release.
4.18 Patch jms7865 Latest

Fixed an issue with the JMS Consumer Snap that reinserts failed messages in the JMS queue without checking for duplicate messages.

4.18snapsmrc523
 
StableUpgraded with the latest SnapLogic Platform release.
4.17ALL7402
 
Latest

Pushed automatic rebuild of the latest version of each Snap Pack to SnapLogic UAT and Elastic servers.

4.17snapsmrc515
 
Latest

Added the Snap Execution field to all Standard-mode Snaps. In some Snaps, this field replaces the existing Execute during preview check box.

4.16snapsmrc508
 
StableUpgraded with the latest SnapLogic Platform release.
4.15snapsmrc500
 
Stable

Added HornetQ support for the JMS Producer and JMS Consumer Snaps.

4.14snapsmrc490
 
StableUpgraded with the latest SnapLogic Platform release.
4.13

snapsmrc486

 
StableUpgraded with the latest SnapLogic Platform release.
4.12

snapsmrc480

 
StableUpgraded with the latest SnapLogic Platform release.
4.11snapsmrc465
 
StableUpgraded with the latest SnapLogic Platform release.
4.10

snapsmrc414

 
StableUpgraded with the latest SnapLogic Platform release.
4.9 Patch jms3305 Latest

Elegant error & resolution messaging for bad ConnectionFactory and bad connectionFactoryNames JNDI property

4.9snapsmrc405
 
StableUpgraded with the latest SnapLogic Platform release.
4.8 Patch jms2702  Latest

Addressed an issue with the JMS Acknowledge Snap failing to exit in Ultra mode.

4.8 Patchjms2883 Latest

Addressed multiple issues regarding messages being consumed or acknowledged in JMS Consumer and Acknowledge Snaps.

4.8

snapsmrc398

 
StableUpgraded with the latest SnapLogic Platform release.
4.7

snapsmrc382

 
StableUpgraded with the latest SnapLogic Platform release.
4.6snapsmrc362
 
StableUpgraded with the latest SnapLogic Platform release.
4.5.1

snapsmrc344

 
StableUpgraded with the latest SnapLogic Platform release.
4.5

snapsmrc344

Stable
  • Resolved an issue in JMS Consumer Snap that occurred when the Snap is set with the SQS account on a client_acknowledge mode.
  • Resolved an issue in JMS Consumer Snap that occurred when the Snap was used in the middle of a pipeline.
4.4
 Stable
  • JMS Producer: The file header is now passed through to the output view.
  • JMS Acknowledge: JMS MessageID is now optional for the input.
  • JMS Consumer: Expressions are now supported for Client ID and Subscription Name.