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57.23 Kafka 57.25 Message Broker

57.141.1Cluster Manager Maintenance

The Cluster Manager Maintenance configuration category includes the following configurable options:

Audit Log Broker Channel Name
Audit Log Broker Enabled
Always Write to Cluster Manager Log
Audit Log Database Async Writes
Audit Log Database Enabled
Request headers to store
Reload Scripts on Module Config Save
Transaction Log Retention (Days)
Scheduler Thread Count
Heartbeat Persist Frequency MS
Stats Cleanup Frequency MS
Stats Persist Frequency MS
Support writes to LOB columns

57.141.2Property: Audit Log Broker Channel Name

Property Name	Audit Log Broker Channel Name
Property Key
Property Type	STRING
Description	The audit logs will be sent to the specified topic/queue name. Must be non-empty.
Applies to Modules	Cluster Manager
Default Value	`smilecdr-audit`
Example Property	`module.[MODULE_ID].config.audit_log.broker.channel_name = smilecdr-audit`

57.141.3Property: Audit Log Broker Enabled

Property Name	Audit Log Broker Enabled
Property Key
Property Type	BOOLEAN
Description	This setting may be used to submit all audit log events to a message queue.
Applies to Modules	Cluster Manager
Default Value	`false`
Example Property	`module.[MODULE_ID].config.audit_log.broker.enabled = false`

57.141.4Property: Always Write to Cluster Manager Log

Property Name	Always Write to Cluster Manager Log
Property Key
Property Type	BOOLEAN
Description	Forces Smile CDR to always send audit logs to the cluster manager audit database, even if another module of type `audit` is defined. Normally, creating such a module would disable the builtin audit log in the cluster manager. Setting this setting to true will cause all audit log events to be written to both databases.
Applies to Modules	Cluster Manager
Default Value	`true`
Example Property	`module.[MODULE_ID].config.audit_log.db.always_write_to_clustermgr = true`

57.141.5Property: Audit Log Database Async Writes

Property Name	Audit Log Database Async Writes
Property Key
Property Type	BOOLEAN
Description	If enabled, writing to the audit log will be performed asynchronously, resulting in potentially shorter transaction times and a more efficient use of the database. An in-memory asynchronous queue is used, meaning that there can be a small delay between an auditable action occurring and the audit log being written.
Applies to Modules	Cluster Manager
Default Value	`false`
Example Property	`module.[MODULE_ID].config.audit_log.db.async_writes.enabled = false`

57.141.6Property: Audit Log Database Enabled

Property Name	Audit Log Database Enabled
Property Key
Property Type	BOOLEAN
Description	This setting may be used to disable saving audit logs to all database event writers if it is not needed in a given solution design.
Applies to Modules	Cluster Manager
Default Value	`true`
Example Property	`module.[MODULE_ID].config.audit_log.db.enabled = true`

57.141.7Property: Request headers to store

Property Name	Request headers to store
Property Key
Property Type	STRING
Description	This setting can be set to a comma-delimited list of header names that the audit service will extract from the request and store with any Audit Log.
Applies to Modules	Cluster Manager
Default Value	(no default)
Example Property	`module.[MODULE_ID].config.audit_log.request_headers_to_store =`

57.141.8Property: Reload Scripts on Module Config Save

Property Name	Reload Scripts on Module Config Save
Property Key
Property Type	BOOLEAN
Description	If enabled, when module configuration is saved via the Web Admin Console or the Admin JSON endpoint, then all scripts in that configuration will be reloaded on the server where the save occurred. This allows javascript developers to quickly test changes to scripts on a standalone development server without having to restart the module. Note this will only reload the script on the process where the save occurred. If you need to reload scripts in a module running in a cluster, you should restart the module.
Applies to Modules	Cluster Manager
Default Value	`false`
Example Property	`module.[MODULE_ID].config.reload_scripts_on_save = false`

57.141.9Property: Transaction Log Retention (Days)

Property Name	Transaction Log Retention (Days)
Property Key
Property Type	NON_NEGATIVE_INTEGER
Description	The number of days that entries in the transaction log should be retained before being deleted from the database. If blank, the transaction log will be retained indefinitely.
Applies to Modules	Cluster Manager Transaction Log Persistence
Default Value	`7`
Example Property	`module.[MODULE_ID].config.retain_transaction_log_days = 7`

57.141.10Property: Scheduler Thread Count

Property Name	Scheduler Thread Count
Property Key
Property Type	POSITIVE_INTEGER
Description	The number of threads allocated to processing Scheduled Jobs (both local and clustered). See Scheduler Performance for more information.
Applies to Modules	Cluster Manager FHIR Gateway REST Endpoint FHIR Storage (DSTU2 RDBMS) FHIR Storage (MongoDB) FHIR Storage (R3 RDBMS) FHIR Storage (R4 RDBMS) FHIR Storage (R5 RDBMS) Subscription Matcher (All FHIR Versions)
Default Value	`4`
Example Property	`module.[MODULE_ID].config.schedule.thread_count = 4`

57.141.11Property: Heartbeat Persist Frequency MS

Property Name	Heartbeat Persist Frequency MS
Property Key
Property Type	POSITIVE_INTEGER
Description	How often module health status is persisted to the database
Applies to Modules	Cluster Manager
Default Value	`15000`
Example Property	`module.[MODULE_ID].config.stats.heartbeat_persist_frequency_ms = 15000`

57.141.12Property: Stats Cleanup Frequency MS

Property Name	Stats Cleanup Frequency MS
Property Key
Property Type	POSITIVE_INTEGER
Description	How often module performance statistics are deleted from the database and collapsed into time interval statistics. Should be greater than stats.stats_persist_frequency_ms
Applies to Modules	Cluster Manager
Default Value	`300000`
Example Property	`module.[MODULE_ID].config.stats.stats_cleanup_frequency_ms = 300000`

57.141.13Property: Stats Persist Frequency MS

Property Name	Stats Persist Frequency MS
Property Key
Property Type	POSITIVE_INTEGER
Description	How often module performance statistics are persisted to the database. Should be greater than or equal to stats.heartbeat_persist_frequency_ms
Applies to Modules	Cluster Manager
Default Value	`60000`
Example Property	`module.[MODULE_ID].config.stats.stats_persist_frequency_ms = 60000`

57.141.14Property: Support writes to LOB columns

Property Name	Support writes to LOB columns
Property Key
Property Type	BOOLEAN
Description	If enabled, will still write to pre-migration LOB columns when supported.
Applies to Modules	Cluster Manager
Default Value	`true`
Example Property	`module.[MODULE_ID].config.support_legacy_lob_server = true`

57.23 Kafka 57.25 Message Broker