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Configurable Sub Elements
| Element Name | Description | Type | Default Value | Fixed Values | Mandatory/ Optional | Notes |
|---|---|---|---|---|---|---|
| <default> | Sets the default virtual host for connections which do not specify a vh | String | carbon | one of defined virtual-hosts | Mandatory |
<virtualhost>
Define a virtual host and all it's config under here. All sub sections from here will come under this element.
Configurable Sub Elements
| Element Name | Description | Type | Default Value | Fixed Values | Mandatory/Optional | Notes |
|---|---|---|---|---|---|---|
| <name> | Sets the identifiable name for the virtualhost | String | carbon | N/A | Mandatory |
<carbon>
Under this tag all configuration options are coming for "carbon" virtualhost.
<store>
Defines the store properties used by this virtual host to keep messages. By default apache Cassandra based message store is configured.
Configurable Sub Elements
| Element Name | Description | Type | Default Value | Fixed Values | Mandatory/ Optional | Notes |
|---|---|---|---|---|---|---|
| <class> | Class that implementing the message store. | String | org.wso2.andes.server.store. CassandraMessageStore | N/A | Mandatory | This should be in the classpath when the broker is staring |
| <username> | User name for message store access | String | admin | Mandatory | This can be any Carbon user with no special permissions. | |
| <password> | Password for message store access | String | admin | Mandatory | ||
| <cluster> | Name of the cluster this broker instance should be registered | String | ClusterOne | Mandatory | ||
| <idGenerator> | Class generating message IDs for global sync across the cluster | String | org.wso2.andes.server.cluster.coordination. TimeStampBasedMessageIdGenerator | Mandatory | ||
| <connectionString> | Connection string for the message store | localhost:9160 | if you have external Cassandra server running or Cassandra cluster running this should point to that running instance or cluster. |
<advanced>
This section is used to change the default configurations of the Cassandra instance. These values will be used when running broker in a clustered Cassandra set up.
Configurable Sub Elements
| Element Name | Description | Type | Default Value | Fixed Values | Mandatory/Optional | Notes |
|---|---|---|---|---|---|---|
| <replicationFactor> | The replication factor specifies how many copies of each data will be stored and distributed throughout the cassandra cluster | Int | 1 | N/A | Mandatory | If the strategy class is set to 'org.apache.cassandra.locator.NetworkTopologyStrategy' do not set this value in replication factor. |
| <readConsistencyLevel> | This specifies how many replicas must respond before a result is returned to the client. | String | QUORUM | ONE, TWO, THREE, QUORUM, ALL, ANY, EACH_QUORUM, LOCAL_QUORUM | Mandatory | QUORUM = (replication_factor / 2) + 1 |
| <writeConsistencyLevel> | This specifies how many replicas the write must succeed before returning an acknowledgement to the client. | String | QUORUM | ONE, TWO, THREE, QUORUM, ALL, ANY, EACH_QUORUM, LOCAL_QUORUM | Mandatory | |
| <strategyClass> | String | org.apache.cassandra.locator.SimpleStrategy | SimpleStrategy/NetworkTopologyStrategy | Mandatory |
<housekeeping>
Housekeeping task configurations for virtualhosts
Configurable Sub Elements
| Element Name | Description | Type | Default Value | Fixed Values | Mandatory/ Optional | Notes |
|---|---|---|---|---|---|---|
| <threadCount> | Int | 2 | N/A | Mandatory | ||
| <expiredMessageCheckPeriod> | Milliseconds | 20000 | N/A | Mandatory |
<exchanges>
Define the types of additional AMQP exchange available for this vh. Always get amq.direct (for queues) and amq.topic (for topics) by default. Declaring an additional exchanges type for developer use only.
<queues>
Note that if you do not a dd details of a queue or topic you intend to use to this file, you must first create a consumer on a queue/topic before you can publish to it using WSO2 MB.
Configurable Sub Elements
| Element Name | Description | Type | Default Value | Fixed Values | Mandatory/ Optional | Notes |
|---|---|---|---|---|---|---|
| <maximumQueueDepth> | Defines the maximum number of messages that can be kept in internal queue buffer for delivery | 4235264 | N/A | Mandatory | ||
| <maximumMessageSize> | 2117632 | N/A | Mandatory | |||
| <maximumMessageAge> | messages kept in the broker this much time will be dropped | 3600000 | N/A | Mandatory | ||
| <maximumMessageCount> | 50000 | N/A | Mandatory |