Versions Compared

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

Introduction

The Case Engine Scheduler Component is introduced to be able to schedule without having a dependency on the runtime. It supports all scheduling options that the case engine needs. The  Case Engine Scheduler is implemented using Quartz Enterprise Job Scheduler.


Table of Contents

Panel

Table of Contents
maxLevel2

Info

The case engine scheduler will share the Quartz scheduler instance with its own advanced scheduler, so if you already configured Quartz for the basic scheduler, you just need to enable the the case-engine profile and you can skip the remainder of this guide.

Installation

Steps:

  1. The scheduler will be automatically available if the
    Include Page
    _ProfileCaseEngine
    _ProfileCaseEngine
    profile is added to the list of spring active profiles in the bootstrap.properties. More information on how to configure the application using Spring Profiles can be found here: External application configuration with Spring Profiles.
  2. Add the application-case-engine.properties file in the configuration location if it does not yet exist. This properties file is added in the 
    Include Page
    _ConfigLocation
    _ConfigLocation
    directory when using the Blueriq installer.
  3. Run the provided scripts for creating the quartz tables in the database: msssql.sql, pgsql.sql or oracle.sql. The scripts are located in the release zip in \Runtime\Java\Webapp\DBScripts\blueriq-case-engine-scheduler-quartz
  4. Define quartz database connection in the
    Include Page
    _PropertiesExternalDatasources
    _PropertiesExternalDatasources
    file.


Info

Steps 3 and 4 are applicable only if Quartz triggers and jobs are stored in a database instead of in memory.


Configuration

Info

Every Quartz configuration property has to be specified in application-case-engine.properties for the Runtime.


Quartz is configured using a set of properties. Quartz uses a job store in order to persist jobs details, triggers and other job related information. We support two types of job stores:

Memory (default)

Info
titleInfo

This is the default configuration for Java environments.
For more details about in memory job store configuration please visit Config RAM Job Store.

By default memory mode is enabled which should be used only for demos and standalone development. For recommended settings please check the Database section. For memory the following setting should be set in the 

Include Page
_PropertiesCaseEngine
_PropertiesCaseEngine
.

Code Block
titleapplication-case-engine.properties
spring.quartz.job-store-type = memory

Database

For database mode, which is required for production, specify the following in

Include Page
_PropertiesCaseEngine
_PropertiesCaseEngine
:

Code Block
titleapplication-case-engine.properties
spring.quartz.job-store-type = jdbc
spring.quartz.properties.org.quartz.jobStore.tablePrefix = QRTZ_

# Enable the delegate for the specific database
# Note that the OracleDelegate is not compatible with the supported Oracle JDBC versions, so don't configure Quartz to use that delegate class
#spring.quartz.properties.org.quartz.jobStore.driverDelegateClass = org.quartz.impl.jdbcjobstore.MSSQLDelegate
#spring.quartz.properties.org.quartz.jobStore.driverDelegateClass = org.quartz.impl.jdbcjobstore.PostgreSQLDelegate

JDBCJobStore’s “table prefix” property is a string equal to the prefix given to Quartz’s tables that were created in your database. You can have multiple sets of Quartz’s tables within the same database if they use different table prefixes.

Info

When changing the org.quartz.jobStore.tablePrefix, please change the SQL create scripts accordingly.

Include Page
_DatasourceConfiguration
_DatasourceConfiguration

Thread Pool

When the database is configured, we recommend to also configure the thread pool. Each DCM project gets its own trigger. It is recommended to have a thread per DCM project. For example if you have 3 DCM projects you should set the threadCount to 3.

Please check that the threadCount does not exceed the number of available database connections (or connections in the database connection pool). The quartz documentation suggests the following: provided that the database allows X connections, then the threadCount must be set to X - 3.

Below are the default thread Pool properties:

Code Block
languagepowershell
titleapplication-case-engine.properties
spring.quartz.properties.org.quartz.threadPool.class = org.quartz.simpl.SimpleThreadPool
spring.quartz.properties.org.quartz.threadPool.threadCount = 2
Info

For more information and properties related to Quartz ThreadPool, please visit ThreadPool Configuration

Clustering

There are many configuration properties for clustering, see the Quartz documentation. To enable clustering, specify at least these properties:

Code Block
languagepowershell
titleapplication-case-engine.properties
spring.quartz.properties.org.quartz.jobStore.isClustered = true
spring.quartz.properties.org.quartz.scheduler.instanceName = MyClusteredScheduler
# Have Quartz generate an instanceId for each node in the cluster
spring.quartz.properties.org.quartz.scheduler.instanceId = AUTO

Anchor
Troubleshooting
Troubleshooting
Troubleshooting


Info

For more information on quartz configurations, please visit: Quartz-Scheduler.org.