DynamoDb Service Registry

Stores registered service data in a DynamoDb instance.

Support is enabled by adding the following module into the overlay:

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<dependency>
    <groupId>org.apereo.cas</groupId>
    <artifactId>cas-server-support-dynamodb-service-registry</artifactId>
    <version>${cas.version}</version>
</dependency>
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implementation "org.apereo.cas:cas-server-support-dynamodb-service-registry:${project.'cas.version'}"
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dependencyManagement {
    imports {
        mavenBom "org.apereo.cas:cas-server-support-bom:${project.'cas.version'}"
    }
}

dependencies {
    implementation "org.apereo.cas:cas-server-support-dynamodb-service-registry"
}
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dependencies {
    /*
    The following platform references should be included automatically and are listed here for reference only.
            
    implementation enforcedPlatform("org.apereo.cas:cas-server-support-bom:${project.'cas.version'}")
    implementation platform(org.springframework.boot.gradle.plugin.SpringBootPlugin.BOM_COORDINATES)
    */

    implementation "org.apereo.cas:cas-server-support-dynamodb-service-registry"
}

Configuration

You will need to provide CAS with your AWS credentials. Also, to gain a better understanding of DynamoDb’s core components and concepts, please start with this guide first.

The following settings and properties are available from the CAS configuration catalog:

The configuration settings listed below are tagged as Required in the CAS configuration metadata. This flag indicates that the presence of the setting may be needed to activate or affect the behavior of the CAS feature and generally should be reviewed, possibly owned and adjusted. If the setting is assigned a default value, you do not need to strictly put the setting in your copy of the configuration, but should review it nonetheless to make sure it matches your deployment expectations.

  • cas.service-registry.dynamo-db.dax.url=
  • Cluster url. For example, dax://my-cluster.l6fzcv.dax-clusters.us-east-1.amazonaws.com.

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbDaxProperties.

    How can I configure this property?

  • cas.service-registry.dynamo-db.credential-access-key=
  • Use access-key provided by AWS to authenticate.

    This setting supports the Spring Expression Language.

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbServiceRegistryProperties.

    How can I configure this property?

  • cas.service-registry.dynamo-db.credential-secret-key=
  • Use secret key provided by AWS to authenticate.

    This setting supports the Spring Expression Language.

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbServiceRegistryProperties.

    How can I configure this property?

  • cas.service-registry.dynamo-db.endpoint=
  • AWS custom endpoint.

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbServiceRegistryProperties.

    How can I configure this property?

  • cas.service-registry.dynamo-db.region=
  • AWS region used.

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbServiceRegistryProperties.

    How can I configure this property?

    The configuration settings listed below are tagged as Optional in the CAS configuration metadata. This flag indicates that the presence of the setting is not immediately necessary in the end-user CAS configuration, because a default value is assigned or the activation of the feature is not conditionally controlled by the setting value. In other words, you should only include this field in your configuration if you need to modify the default value or if you need to turn on the feature controlled by the setting.

  • cas.service-registry.dynamo-db.dax.connect-timeout=PT5S
  • Connection timeout, calculated in milliseconds.

    This settings supports the java.time.Duration syntax [?].

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbDaxProperties.

    How can I configure this property?

  • cas.service-registry.dynamo-db.dax.connection-ttl=PT0S
  • How long should connections be kept alive, calculated in milliseconds.

    This settings supports the java.time.Duration syntax [?].

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbDaxProperties.

    How can I configure this property?

  • cas.service-registry.dynamo-db.dax.idle-timeout=PT15S
  • Connection idle timeout, calculated in milliseconds.

    This settings supports the java.time.Duration syntax [?].

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbDaxProperties.

    How can I configure this property?

  • cas.service-registry.dynamo-db.dax.max-concurrency=1000
  • Determines the maximum number of concurrent requests that can be made to the DAX cluster.

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbDaxProperties.

    How can I configure this property?

  • cas.service-registry.dynamo-db.dax.read-retries=2
  • Number of read retry attempts.

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbDaxProperties.

    How can I configure this property?

  • cas.service-registry.dynamo-db.dax.request-timeout=PT5S
  • Request execution timeout, calculated in milliseconds.

    This settings supports the java.time.Duration syntax [?].

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbDaxProperties.

    How can I configure this property?

  • cas.service-registry.dynamo-db.dax.write-retries=2
  • Number of write retry attempts.

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbDaxProperties.

    How can I configure this property?

  • cas.service-registry.dynamo-db.billing-mode=PROVISIONED
  • Billing mode specifies how you are charged for read and write throughput and how you manage capacity. Available values are as follows:

    • PROVISIONED: Provisioned mode means that you specify the number of reads and writes per second that you expect your application to use. Provisioned mode is a good option if any of the following are true:
      • You have predictable application traffic.
      • You run applications whose traffic is consistent or ramps gradually.
      • You can forecast capacity requirements to control costs.
      You can use auto scaling to automatically adjust capacity based on the specified utilization rate to ensure application performance while reducing costs.
    • PAY_PER_REQUEST: Pay-per-request or on-demand billing means that you're charged for only the read/write requests that you use. On-demand mode is a good option if any of the following are true:
      • You create new tables with unknown workloads.
      • You have unpredictable application traffic.
      • You prefer the ease of paying for only what you use.
      Tables using on-demand mode support all DynamoDB features (such as encryption at rest, point-in-time recovery, global tables, and so on) with the exception of auto scaling, which is not applicable with this mode.

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbServiceRegistryProperties.

    How can I configure this property?

  • cas.service-registry.dynamo-db.client-execution-timeout=10000
  • Client execution timeout.

    This settings supports the java.time.Duration syntax [?].

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbServiceRegistryProperties.

    How can I configure this property?

  • cas.service-registry.dynamo-db.connection-timeout=5000
  • Connection timeout.

    This settings supports the java.time.Duration syntax [?].

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbServiceRegistryProperties.

    How can I configure this property?

  • cas.service-registry.dynamo-db.drop-tables-on-startup=false
  • Flag that indicates whether to drop tables on start up.

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbServiceRegistryProperties.

    How can I configure this property?

  • cas.service-registry.dynamo-db.local-address=
  • Local address.

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbServiceRegistryProperties.

    How can I configure this property?

  • cas.service-registry.dynamo-db.local-instance=false
  • Indicates that the database instance is local to the deployment that does not require or use any credentials or other configuration other than host and region. This is mostly used during development and testing.

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbServiceRegistryProperties.

    How can I configure this property?

  • cas.service-registry.dynamo-db.max-connections=10
  • Maximum connections setting.

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbServiceRegistryProperties.

    How can I configure this property?

  • cas.service-registry.dynamo-db.prevent-table-creation-on-startup=false
  • Flag that indicates whether to prevent CAS from creating tables.

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbServiceRegistryProperties.

    How can I configure this property?

  • cas.service-registry.dynamo-db.profile-name=
  • Profile name to use.

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbServiceRegistryProperties.

    How can I configure this property?

  • cas.service-registry.dynamo-db.profile-path=
  • Profile path.

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbServiceRegistryProperties.

    How can I configure this property?

  • cas.service-registry.dynamo-db.proxy-host=
  • Optionally specifies the proxy host to connect through.

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbServiceRegistryProperties.

    How can I configure this property?

  • cas.service-registry.dynamo-db.proxy-password=
  • Optionally specifies the proxy password to connect through.

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbServiceRegistryProperties.

    How can I configure this property?

  • cas.service-registry.dynamo-db.proxy-username=
  • Optionally specifies the proxy username to connect through.

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbServiceRegistryProperties.

    How can I configure this property?

  • cas.service-registry.dynamo-db.read-capacity=10
  • Read capacity.

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbServiceRegistryProperties.

    How can I configure this property?

  • cas.service-registry.dynamo-db.retry-mode=STANDARD
  • Outline the requested retry mode. Accepted values are STANDARD, LEGACY.

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbServiceRegistryProperties.

    How can I configure this property?

  • cas.service-registry.dynamo-db.socket-timeout=5000
  • Socket timeout.

    This settings supports the java.time.Duration syntax [?].

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbServiceRegistryProperties.

    How can I configure this property?

  • cas.service-registry.dynamo-db.table-name=DynamoDbCasServices
  • The table name used and created by CAS to hold service definitions in DynamoDb.

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbServiceRegistryProperties.

    How can I configure this property?

  • cas.service-registry.dynamo-db.time-offset=0
  • Time offset.

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbServiceRegistryProperties.

    How can I configure this property?

  • cas.service-registry.dynamo-db.use-reaper=false
  • Flag that indicates whether to use reaper.

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbServiceRegistryProperties.

    How can I configure this property?

  • cas.service-registry.dynamo-db.write-capacity=10
  • Write capacity.

    org.apereo.cas.configuration.model.support.dynamodb.DynamoDbServiceRegistryProperties.

    How can I configure this property?

    Configuration Metadata

    The collection of configuration properties listed in this section are automatically generated from the CAS source and components that contain the actual field definitions, types, descriptions, modules, etc. This metadata may not always be 100% accurate, or could be lacking details and sufficient explanations.

    Be Selective

    This section is meant as a guide only. Do NOT copy/paste the entire collection of settings into your CAS configuration; rather pick only the properties that you need. Do NOT enable settings unless you are certain of their purpose and do NOT copy settings into your configuration only to keep them as reference. All these ideas lead to upgrade headaches, maintenance nightmares and premature aging.

    YAGNI

    Note that for nearly ALL use cases, declaring and configuring properties listed here is sufficient. You should NOT have to explicitly massage a CAS XML/Java/etc configuration file to design an authentication handler, create attribute release policies, etc. CAS at runtime will auto-configure all required changes for you. If you are unsure about the meaning of a given CAS setting, do NOT turn it on without hesitation. Review the codebase or better yet, ask questions to clarify the intended behavior.

    Naming Convention

    Property names can be specified in very relaxed terms. For instance cas.someProperty, cas.some-property, cas.some_property are all valid names. While all forms are accepted by CAS, there are certain components (in CAS and other frameworks used) whose activation at runtime is conditional on a property value, where this property is required to have been specified in CAS configuration using kebab case. This is both true for properties that are owned by CAS as well as those that might be presented to the system via an external library or framework such as Spring Boot, etc.

    :information_source: Note

    When possible, properties should be stored in lower-case kebab format, such as cas.property-name=value. The only possible exception to this rule is when naming actuator endpoints; The name of the actuator endpoints (i.e. ssoSessions) MUST remain in camelCase mode.

    Settings and properties that are controlled by the CAS platform directly always begin with the prefix cas. All other settings are controlled and provided to CAS via other underlying frameworks and may have their own schemas and syntax. BE CAREFUL with the distinction. Unrecognized properties are rejected by CAS and/or frameworks upon which CAS depends. This means if you somehow misspell a property definition or fail to adhere to the dot-notation syntax and such, your setting is entirely refused by CAS and likely the feature it controls will never be activated in the way you intend.

    Validation

    Configuration properties are automatically validated on CAS startup to report issues with configuration binding, specially if defined CAS settings cannot be recognized or validated by the configuration schema. Additional validation processes are also handled via Configuration Metadata and property migrations applied automatically on startup by Spring Boot and family.

    Indexed Settings

    CAS settings able to accept multiple values are typically documented with an index, such as cas.some.setting[0]=value. The index [0] is meant to be incremented by the adopter to allow for distinct multiple configuration blocks.

    Troubleshooting

    To enable additional logging, configure the log4j configuration file to add the following levels:

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    ...
    <Logger name="com.amazonaws" level="debug" additivity="false">
        <AppenderRef ref="casConsole"/>
        <AppenderRef ref="casFile"/>
    </Logger>
    ...
    

    Auto Initialization

    Upon startup and configuration permitting, the registry is able to auto initialize itself from default JSON service definitions available to CAS. See this guide for more info.