Changelog

Release notes

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Version 4.0.18, 10/18/2024

Added

Added Kafka Raft for the Kafka-standalone app.

Removed

Removed zookeeper from Kafka-standalone app.

Changed

N/A

Version 3.0.17, 10/9/2024

Added

Partial support of Active Profile using the "spring.profiles.active" parameter

Removed

Feature to ping a function without payload and headers.

Changed

OSS update - vertx 2.5.10, spring boot 3.3.4
Simplified api-playground application

Version 3.0.16, 8/31/2024

Added

N/A

Removed

N/A

Changed

Updated documentation
AsyncHttpRequest - remove the class type variable in the data model
MultiLevelMap - update the removeElement method
OSS update - GSON 2.11.0, classpath 4.8.174, guava 33.3.0-jre, vertx 2.5.9, spring boot 3.3.3, spring framework 5.3.39

Version 3.0.15, 5/1/2024

This version supercedes 3.0.13 and 3.0.14 due to updated data structure for static content handling.

Added

Added optional static-content.no-cache-pages in rest.yaml
AsyncHttpClientLoader

Removed

N/A

Changed

Updated data structure for static-content section in rest.yaml
Fixed bug for setting multiple HTTP cookies
Unified configuration file prefix "yaml."

Version 3.0.14, 4/28/2024

Added

N/A

Removed

N/A

Changed

Updated syntax for static-content-filter section in rest.yaml

Version 3.0.13, 4/28/2024

Added

Added optional static content HTTP-GET request filter in rest.yaml

Removed

N/A

Changed

Updated guava to version 33.1.0-jre

Version 3.0.12, 4/24/2024

Added

N/A

Removed

N/A

Changed

Enhanced OptionalService annotation

Version 3.0.11, 4/23/2024

Backport KernelThreadRunner from Mercury Composable 3.1

Added

KernelThreadRunner annotation

Removed

CoroutineRunner annotation

Changed

Set default execution strategy to "coroutine". To tell the system to run a function using kernel thread pool, add the KernelThreadRunner annotation.
Update PersistentWsClient to use vertx WebSocketClient.
Upgrade netty to version 4.1.109.Final.

Version 3.0.10, 3/19/2024

Added

Added "app-config-reader.yml" file in the resources folder so that you can override the default application configuration files.

Removed

N/A

Changed

Open sources library update (Spring Boot 3.2.4, Vertx 4.5.5)
Improve AppConfigReader and ConfigReader to use the app-config-reader.yml file.

Version 3.0.9, 2/9/2024

Added

AutoStart to run application as Spring Boot if the rest-spring-3 library is packaged in app

Removed

Bugfix: removed websocket client connection timeout that causes the first connection to drop after one minute

Changed

Open sources library update (Spring Boot 3.2.2, Vertx 4.5.3 and MsgPack 0.9.8)
Rename application parameter "event.worker.pool" to "kernel.thread.pool"
Support user defined serializer with PreLoad annotation and platform API

Version 3.0.8, 1/27/2024

Added

N/A

Removed

ActiveMQ and Tibco cloud connectors

Changed

Updated AsyncHttpRequest and CryptoApi

Version 3.0.7, 12/23/2023

Added

Print out basic JVM information before startup for verification of base container image.

Removed

Removed Maven Shade packager

Changed

Updated open sources libraries to address security vulnerabilities

Spring Boot 2/3 to version 2.7.18 and 3.2.1 respectively
Tomcat 9.0.84
Vertx 4.5.1
Classgraph 4.8.165
Netty 4.1.104.Final
slf4j API 2.0.9
log4j2 2.22.0
Kotlin 1.9.22
Artemis 2.31.2
Hazelcast 5.3.6
Guava 33.0.0-jre

Version 3.0.6, 10/26/2023

Added

Enhanced Benchmark tool to support "Event over HTTP" protocol to evaluate performance efficiency for commmunication between application containers using HTTP.

Removed

N/A

Changed

Updated open sources libraries

Spring Boot 2/3 to version 2.7.17 and 3.1.5 respectively
Kafka-client 3.6.0

Version 3.0.5, 10/21/2023

Added

Support two executable JAR packaging system: 1. Maven Shade packager 2. Spring Boot packager

Starting from version 3.0.5, we have replaced Spring Boot packager with Maven Shade. This avoids a classpath edge case for Spring Boot packager when running kafka-client under Java 11 or higher.

Maven Shade also results in smaller executable JAR size.

Removed

N/A

Changed

Updated open sources libraries

Spring-Boot 2.7.16 / 3.1.4
classgraph 4.8.163
snakeyaml 2.2
kotlin 1.9.10
vertx 4.4.6
guava 32.1.3-jre
msgpack 0.9.6
slj4j 2.0.9
zookeeper 3.7.2

The "/info/lib" admin endpoint has been enhanced to list library dependencies for executable JAR generated by either Maven Shade or Spring Boot Packager.

Improved ConfigReader to recognize both ".yml" and ".yaml" extensions and their uses are interchangeable.

Version 3.0.4, 8/6/2023

Added

N/A

Removed

N/A

Changed

Updated open sources libraries

Spring-Boot 2.7.14 / 3.1.2
Kafka-client 3.5.1
classgraph 4.8.161
guava 32.1.2-jre
msgpack 0.9.5

Version 3.0.3, 6/27/2023

Added

File extension to MIME type mapping for static HTML file handling

Removed

N/A

Changed

Open sources library update - Kotlin version 1.9.0

Version 3.0.2, 6/9/2023

Added

N/A

Removed

N/A

Changed

Consistent exception handling for Event API endpoint
Open sources lib update - Vertx 4.4.4, Spring Boot 2.7.13, Spring Boot 3.1.1, classgraph 4.8.160, guava 32.0.1-jre

Version 3.0.1, 6/5/2023

In this release, we have replace Google HTTP Client with vertx non-blocking WebClient. We also tested compatibility up to OpenJDK version 20 and maven 3.9.2.

Added

When "x-raw-xml" HTTP request header is set to "true", the AsyncHttpClient will skip the built-in XML serialization so that your application can retrieve the original XML text.

Removed

Retire Google HTTP client

Changed

Upgrade maven plugin versions.

Version 3.0.0, 4/18/2023

This is a major release with some breaking changes. Please refer to Chapter-10 (Migration guide) for details. This version brings the best of preemptive and cooperating multitasking to Java (version 1.8 to 19) before Java 19 virtual thread feature becomes officially available.

Added

Function execution engine supporting kernel thread pool, Kotlin coroutine and suspend function
"Event over HTTP" service for inter-container communication
Support for Spring Boot version 3 and WebFlux
Sample code for a pre-configured Spring Boot 3 application

Removed

Remove blocking APIs from platform-core
Retire PM2 process manager sample script due to compatibility issue

Changed

Refactor "async.http.request" to use vertx web client for non-blocking operation
Update log4j2 version 2.20.0 and slf4j version 2.0.7 in platform-core
Update JBoss RestEasy JAX_RS to version 3.15.6.Final in rest-spring
Update vertx to 4.4.2
Update Spring Boot parent pom to 2.7.12 and 3.1.0 for spring boot 2 and 3 respectively
Remove com.fasterxml.classmate dependency from rest-spring

Version 2.8.0, 3/20/2023

Added

N/A

Removed

N/A

Changed

Improved load balancing in cloud-connector
Filter URI to avoid XSS attack
Upgrade to SnakeYaml 2.0 and patch Spring Boot 2.6.8 for compatibility with it
Upgrade to Vertx 4.4.0, classgraph 4.8.157, tomcat 9.0.73

Version 2.7.1, 12/22/2022

Added

standalone benchmark report app
client and server benchmark apps
add timeout tag to RPC events

Removed

N/A

Changed

Updated open sources dependencies
Netty 4.1.86.Final
Tomcat 9.0.69
Vertx 4.3.6
classgraph 4.8.152
google-http-client 1.42.3
Improved unit tests to use assertThrows to evaluate exception
Enhanced AsyncHttpRequest serialization

Version 2.7.0, 11/11/2022

In this version, REST automation code is moved to platform-core such that REST and Websocket service can share the same port.

Added

AsyncObjectStreamReader is added for non-blocking read operation from an object stream.
Support of LocalDateTime in SimpleMapper
Add "removeElement" method to MultiLevelMap
Automatically convert a map to a PoJo when the sender does not specify class in event body

Removed

N/A

Changed

REST automation becomes part of platform-core and it can co-exist with Spring Web in the rest-spring module
Enforce Spring Boot lifecycle management such that user apps will start after Spring Boot has loaded all components
Update netty to version 4.1.84.Final

Version 2.6.0, 10/13/2022

In this version, websocket notification example code has been removed from the REST automation system. If your application uses this feature, please recover the code from version 2.5.0 and refactor it as a separate library.

Added

N/A

Removed

Simplify REST automation system by removing websocket notification example in REST automation.

Changed

Replace Tomcat websocket server with Vertx non-blocking websocket server library
Update netty to version 4.1.79.Final
Update kafka client to version 2.8.2
Update snake yaml to version 1.33
Update gson to version 2.9.1

Version 2.5.0, 9/10/2022

Added

New Preload annotation class to automate pre-registration of LambdaFunction.

Removed

Removed Spring framework and Tomcat dependencies from platform-core so that the core library can be applied to legacy J2EE application without library conflict.

Changed

Bugfix for proper housekeeping of future events.
Make Gson and MsgPack handling of integer/long consistent

Updated open sources libraries.

Eclipse vertx-core version 4.3.4
MsgPack version 0.9.3
Google httpclient version 1.42.2
SnakeYaml version 1.31

Version 2.3.6, 6/21/2022

Added

Support more than one event stream cluster. User application can share the same event stream cluster for pub/sub or connect to an alternative cluster for pub/sub use cases.

Removed

N/A

Changed

Cloud connector libraries update to Hazelcast 5.1.2

Version 2.3.5, 5/30/2022

Added

Add tagging feature to handle language connector's routing and exception handling

Removed

Remove language pack's pub/sub broadcast feature

Changed

Update Spring Boot parent to version 2.6.8 to fetch Netty 4.1.77 and Spring Framework 5.3.20
Streamlined language connector transport protocol for compatibility with both Python and Node.js

Version 2.3.4, 5/14/2022

Added

N/A

Removed

Remove swagger-ui distribution from api-playground such that developer can clone the latest version

Changed

Update application.properties (from spring.resources.static-locations to spring.web.resources.static-locations)
Update log4j, Tomcat and netty library version using Spring parent 2.6.6

Version 2.3.3, 3/30/2022

Added

Enhanced AsyncRequest to handle non-blocking fork-n-join

Removed

N/A

Changed

Upgrade Spring Boot from 2.6.3 to 2.6.6

Version 2.3.2, 2/21/2022

Added

Add support of queue API in native pub/sub module for improved ESB compatibility

Removed

N/A

Changed

N/A

Version 2.3.1, 2/19/2022

Added

N/A

Removed

N/A

Changed

Update Vertx to version 4.2.4
Update Tomcat to version 5.0.58
Use Tomcat websocket server for presence monitors
Bugfix - Simple Scheduler's leader election searches peers correctly

Version 2.3.0, 1/28/2022

Added

N/A

Removed

N/A

Changed

Update copyright notice
Update Vertx to version 4.2.3
Bugfix - RSA key generator supporting key length from 1024 to 4096 bits
CryptoAPI - support different AES algorithms and custom IV
Update Spring Boot to version 2.6.3

Version 2.2.3, 12/29/2021

Added

Transaction journaling
Add parameter distributed.trace.aggregation in application.properties such that trace aggregation may be disabled.

Removed

N/A

Changed

Update JBoss RestEasy library to 3.15.3.Final
Improved po.search(route) to scan local and remote service registries. Added "remoteOnly" selection.
Fix bug in releasing presence monitor topic for specific closed user group
Update Apache log4j to version 2.17.1
Update Spring Boot parent to version 2.6.1
Update Netty to version 4.1.72.Final
Update Vertx to version 4.2.2
Convenient class "UserNotification" for backend service to publish events to the UI when REST automation is deployed

Version 2.2.2, 11/12/2021

Added

User defined API authentication functions can be selected using custom HTTP request header
"Exception chaining" feature in EventEnvelope
New "deferred.commit.log" parameter for backward compatibility with older PowerMock in unit tests

Removed

N/A

Changed

Improved and streamlined SimpleXmlParser to handle arrays
Bugfix for file upload in Service Gateway (REST automation library)
Update Tomcat library from 9.0.50 to 9.0.54
Update Spring Boot library to 2.5.6
Update GSON library to 2.8.9

Version 2.2.1, 10/1/2021

Added

Callback function can implement ServiceExceptionHandler to catch exception. It adds the onError() method.

Removed

N/A

Changed

Open sources library update - Vert.x 4.1.3, Netty 4.1.68-Final

Version 2.1.1, 9/10/2021

Added

User defined PoJo and Generics mapping
Standardized serializers for default case, snake_case and camelCase
Support of EventEnvelope as input parameter in TypedLambdaFunction so application function can inspect event's metadata
Application can subscribe to life cycle events of other application instances

Removed

N/A

Changed

Replace Tomcat websocket server engine with Vertx in presence monitor for higher performance
Bugfix for MsgPack transport of integer, long, BigInteger and BigDecimal

Version 2.1.0, 7/25/2021

Added

Multicast - application can define a multicast.yaml config to relay events to more than one target service.
StreamFunction - function that allows the application to control back-pressure

Removed

"object.streams.io" route is removed from platform-core

Changed

Elastic Queue - Refactored using Oracle Berkeley DB
Object stream I/O - simplified design using the new StreamFunction feature
Open sources library update - Spring Boot 2.5.2, Tomcat 9.0.50, Vert.x 4.1.1, Netty 4.1.66-Final

Version 2.0.0, 5/5/2021

Vert.x is introduced as the in-memory event bus

Added

ActiveMQ and Tibco connectors
Admin endpoints to stop, suspend and resume an application instance
Handle edge case to detect stalled application instances
Add "isStreamingPubSub" method to the PubSub interface

Removed

Event Node event stream emulator has been retired. You may use standalone Kafka server as a replacement for development and testing in your laptop.
Multi-tenancy namespace configuration has been retired. It is replaced by the "closed user group" feature.

Changed

Refactored Kafka and Hazelcast connectors to support virtual topics and closed user groups.
Updated ConfigReader to be consistent with Spring value substitution logic for application properties
Replace Akka actor system with Vert.x event bus
Common code for various cloud connectors consolidated into cloud core libraries

Version 1.13.0, 1/15/2021

Version 1.13.0 is the last version that uses Akka as the in-memory event system.

Version 1.12.66, 1/15/2021

Added

A simple websocket notification service is integrated into the REST automation system
Seamless migration feature is added to the REST automation system

Removed

Legacy websocket notification example application

Changed

N/A

Version 1.12.65, 12/9/2020

Added

"kafka.pubsub" is added as a cloud service
File download example in the lambda-example project
"trace.log.header" added to application.properties - when tracing is enabled, this inserts the trace-ID of the transaction in the log context. For more details, please refer to the Developer Guide
Add API to pub/sub engine to support creation of topic with partitions
TypedLambdaFunction is added so that developer can predefine input and output classes in a service without casting

Removed

N/A

Changed

Decouple Kafka pub/sub from kafka connector so that native pub/sub can be used when application is running in standalone mode
Rename "relay" to "targetHost" in AsyncHttpRequest data model
Enhanced routing table distribution by sending a complete list of route tables, thus reducing network admin traffic.

Version 1.12.64, 9/28/2020

Added

If predictable topic is set, application instances will report their predictable topics as "instance ID" to the presence monitor. This improves visibility when a developer tests their application in "hybrid" mode. i.e. running the app locally and connect to the cloud remotely for event streams and cloud resources.

Removed

N/A

Changed

N/A

Version 1.12.63, 8/27/2020

Added

N/A

Removed

N/A

Changed

Improved Kafka producer and consumer pairing

Version 1.12.62, 8/12/2020

Added

New presence monitor's admin endpoint for the operator to force routing table synchronization ("/api/ping/now")

Removed

N/A

Changed

Improved routing table integrity check

Version 1.12.61, 8/8/2020

Added

Event stream systems like Kafka assume topic to be used long term. This version adds support to reuse the same topic when an application instance restarts.

You can create a predictable topic using unique application name and instance ID. For example, with Kubernetes, you can use the POD name as the unique application instance topic.

Removed

N/A

Changed

N/A

Version 1.12.56, 8/4/2020

Added

Automate trace for fork-n-join use case

Removed

N/A

Changed

N/A

Version 1.12.55, 7/19/2020

Added

N/A

Removed

N/A

Changed

Improved distributed trace - set the "from" address in EventEnvelope automatically.

Version 1.12.54, 7/10/2020

Added

N/A

Removed

N/A

Changed

Application life-cycle management - User provided main application(s) will be started after Spring Boot declares web application ready. This ensures correct Spring autowiring or dependencies are available.

Bugfix for locale - String.format(float) returns comma as decimal point that breaks number parser. Replace with BigDecimal decimal point scaling.

Bugfix for Tomcat 9.0.35 - Change Async servlet default timeout from 30 seconds to -1 so the system can handle the whole life-cycle directly.

Version 1.12.52, 6/11/2020

Added

new "search" method in Post Office to return a list of application instances for a service
simple "cron" job scheduler as an extension project
add "sequence" to MainApplication annotation for orderly execution when more than one MainApplication is available
support "Optional" object in EventEnvelope so a LambdaFunction can read and return Optional

Removed

N/A

Changed

The rest-spring library has been updated to support both JAR and WAR deployment
All pom.xml files updated accordingly
PersistentWsClient will back off for 10 seconds when disconnected by remote host

Version 1.12.50, 5/20/2020

Added

Payload segmentation

For large payload in an event, the payload is automatically segmented into 64 KB segments. When there are more than one target application instances, the system ensures that the segments of the same event is delivered to exactly the same target.

PersistentWsClient added - generalized persistent websocket client for Event Node, Kafka reporter and Hazelcast reporter.

Removed

N/A

Changed

Code cleaning to improve consistency
Upgraded to hibernate-validator to v6.1.5.Final and Hazelcast version 4.0.1
REST automation is provided as a library and an application to handle different use cases

Version 1.12.40, 5/4/2020

Added

N/A

Removed

N/A

Changed

For security reason, upgrade log4j to version 2.13.2

Version 1.12.39, 5/3/2020

Added

Use RestEasy JAX-RS library

Removed

For security reason, removed Jersey JAX-RS library

Changed

Updated RestLoader to initialize RestEasy servlet dispatcher
Support nested arrays in MultiLevelMap

Version 1.12.36, 4/16/2020

Added

N/A

Removed

For simplicity, retire route-substitution admin endpoint. Route substitution uses a simple static table in route-substitution.yaml.

Changed

N/A

Version 1.12.35, 4/12/2020

Added

N/A

Removed

SimpleRBAC class is retired

Changed

Improved ConfigReader and AppConfigReader with automatic key-value normalization for YAML and JSON files
Improved pub/sub module in kafka-connector

Version 1.12.34, 3/28/2020

Added

N/A

Removed

Retired proprietary config manager since we can use the "BeforeApplication" approach to load config from Kubernetes configMap or other systems of config record.

Changed

Added "isZero" method to the SimpleMapper class
Convert BigDecimal to string without scientific notation (i.e. toPlainString instead of toString)
Corresponding unit tests added to verify behavior

Version 1.12.32, 3/14/2020

Added

N/A

Removed

N/A

Changed

Kafka-connector will shutdown application instance when the EventProducer cannot send event to Kafka. This would allow the infrastructure to restart application instance automatically.

Version 1.12.31, 2/26/2020

Added

N/A

Removed

N/A

Changed

Kafka-connector now supports external service provider for Kafka properties and credentials. If your application implements a function with route name "kafka.properties.provider" before connecting to cloud, the kafka-connector will retrieve kafka credentials on demand. This addresses case when kafka credentials change after application start-up.
Interceptors are designed to forward requests and thus they do not generate replies. However, if you implement a function as an EventInterceptor, your function can throw exception just like a regular function and the exception will be returned to the calling function. This makes it easier to write interceptors.

Version 1.12.30, 2/6/2020

Added

Expose "async.http.request" as a PUBLIC function ("HttpClient as a service")

Removed

N/A

Changed

Improved Hazelcast client connection stability
Improved Kafka native pub/sub

Version 1.12.29, 1/10/2020

Added

Rest-automation will transport X-Trace-Id from/to Http request/response, therefore extending distributed trace across systems that support the X-Trace-Id HTTP header.
Added endpoint and service to shutdown application instance.

Removed

N/A

Changed

Updated SimpleXmlParser with XML External Entity (XXE) injection prevention.
Bug fix for hazelcast recovery logic - when a hazelcast node is down, the app instance will restart the hazelcast client and reset routing table correctly.
HSTS header insertion is optional so that we can disable it to avoid duplicated header when API gateway is doing it.

Version 1.12.26, 1/4/2020

Added

Feature to disable PoJo deserialization so that caller can decide if the result set should be in PoJo or a Map.

Removed

N/A

Changed

Simplified key management for Event Node
AsyncHttpRequest case insensitivity for headers, cookies, path parameters and session key-values
Make built-in configuration management optional

Version 1.12.19, 12/28/2019

Added

Added HTTP relay feature in rest-automation project

Removed

N/A

Changed

Improved hazelcast retry and peer discovery logic
Refactored rest-automation's service gateway module to use AsyncHttpRequest
Info endpoint to show routing table of a peer

Version 1.12.17, 12/16/2019

Added

Simple configuration management is added to event-node, hazelcast-presence and kafka-presence monitors
Added BeforeApplication annotation - this allows user application to execute some setup logic before the main application starts. e.g. modifying parameters in application.properties
Added API playground as a convenient standalone application to render OpenAPI 2.0 and 3.0 yaml and json files
Added argument parser in rest-automation helper app to use a static HTML folder in the local file system if arguments -html file_path is given when starting the JAR file.

Removed

N/A

Changed

Kafka publisher timeout value changed from 10 to 20 seconds
Log a warning when Kafka takes more than 5 seconds to send an event

Version 1.12.14, 11/20/2019

Added

getRoute() method is added to PostOffice to facilitate RBAC
The route name of the current service is added to an outgoing event when the "from" field is not present
Simple RBAC using YAML configuration instead of code

Removed

N/A

Changed

Updated Spring Boot to v2.2.1

Version 1.12.12, 10/26/2019

Added

Multi-tenancy support for event streams (Hazelcast and Kafka). This allows the use of a single event stream cluster for multiple non-prod environments. For production, it must use a separate event stream cluster for security reason.

Removed

N/A

Changed

logging framework changed from logback to log4j2 (version 2.12.1)
Use JSR-356 websocket annotated ClientEndpoint
Improved websocket reconnection logic

Version 1.12.9, 9/14/2019

Added

Distributed tracing implemented in platform-core and rest-automation
Improved HTTP header transformation for rest-automation

Removed

N/A

Changed

language pack API key obtained from environment variable

Version 1.12.8, 8/15/2019

Added

N/A

Removed

rest-core subproject has been merged with rest-spring

Changed

N/A

Version 1.12.7, 7/15/2019

Added

Periodic routing table integrity check (15 minutes)
Set kafka read pointer to the beginning for new application instances except presence monitor
REST automation helper application in the "extensions" project
Support service discovery of multiple routes in the updated PostOffice's exists() method
logback to set log level based on environment variable LOG_LEVEL (default is INFO)

Removed

N/A

Changed

Minor refactoring of kafka-connector and hazelcast-connector to ensure that they can coexist if you want to include both of these dependencies in your project.

This is for convenience of dev and testing. In production, please select only one cloud connector library to reduce memory footprint.

Version 1.12.4, 6/24/2019

Added

Add inactivity expiry timer to ObjectStreamIO so that house-keeper can clean up resources that are idle

Removed

N/A

Changed

Disable HTML encape sequence for GSON serializer
Bug fix for GSON serialization optimization
Bug fix for Object Stream housekeeper

By default, GSON serializer converts all numbers to double, resulting in unwanted decimal point for integer and long. To handle custom map serialization for correct representation of numbers, an unintended side effect was introduced in earlier releases.

List of inner PoJo would be incorrectly serialized as map, resulting in casting exception. This release resolves this issue.

Version 1.12.1, 6/10/2019

Added

Store-n-forward pub/sub API will be automatically enabled if the underlying cloud connector supports it. e.g. kafka
ObjectStreamIO, a convenient wrapper class, to provide event stream I/O API.
Object stream feature is now a standard feature instead of optional.
Deferred delivery added to language connector.

Removed

N/A

Changed

N/A

Version 1.11.40, 5/25/2019

Added

Route substitution for simple versioning use case
Add "Strict Transport Security" header if HTTPS (https://tools.ietf.org/html/rfc6797)
Event stream connector for Kafka
Distributed housekeeper feature for Hazelcast connector

Removed

System log service

Changed

Refactoring of Hazelcast event stream connector library to sync up with the new Kafka connector.

Version 1.11.39, 4/30/2019

Added

Language-support service application for Python, Node.js and Go, etc. Python language pack project is available at https://github.com/Accenture/mercury-python

Removed

N/A

Changed

replace Jackson serialization engine with Gson (platform-core project)
replace Apache HttpClient with Google Http Client (rest-spring)
remove Jackson dependencies from Spring Boot (rest-spring)
interceptor improvement

Version 1.11.33, 3/25/2019

Added

N/A

Removed

N/A

Changed

Move safe.data.models validation rules from EventEnvelope to SimpleMapper
Apache fluent HTTP client downgraded to version 4.5.6 because the pom file in 4.5.7 is invalid

Version 1.11.30, 3/7/2019

Added

Added retry logic in persistent queue when OS cannot update local file metadata in real-time for Windows based machine.

Removed

N/A

Changed

pom.xml changes - update with latest 3rd party open sources dependencies.

Version 1.11.29, 1/25/2019

Added

platform-core

Support for long running functions so that any long queries will not block the rest of the system.
"safe.data.models" is available as an option in the application.properties. This is an additional security measure to protect against Jackson deserialization vulnerability. See example below:

#
# additional security to protect against model injection
# comma separated list of model packages that are considered safe to be used for object deserialization
#
#safe.data.models=com.accenture.models

rest-spring

"/env" endpoint is added. See sample application.properties below:

#
# environment and system properties to be exposed to the "/env" admin endpoint
#
show.env.variables=USER, TEST
show.application.properties=server.port, cloud.connector

Removed

N/A

Changed

platform-core

Use Java Future and an elastic cached thread pool for executing user functions.

Fixed

N/A

Version 1.11.28, 12/20/2018

Added

Hazelcast support is added. This includes two projects (hazelcast-connector and hazelcast-presence).

Hazelcast-connector is a cloud connector library. Hazelcast-presence is the "Presence Monitor" for monitoring the presence status of each application instance.

Removed

platform-core

The "fixed resource manager" feature is removed because the same outcome can be achieved at the application level. e.g. The application can broadcast requests to multiple application instances with the same route name and use a callback function to receive response asynchronously. The services can provide resource metrics so that the caller can decide which is the most available instance to contact.

For simplicity, resources management is better left to the cloud platform or the application itself.

Changed

N/A

Fixed

N/A