ATG Content Administration uses the multi-threaded deployment features provided by the Dynamo Application Framework (DAF) to transfer data from the versioned source on the ATG Content Administration server to the target site. DAF deployment uses the JDBC driver to copy repository assets to the target, and a TCP connection to transfer file assets.
ATG Content Administration integrates with DAF deployment through the ATG Content Administration deployment API, whose starting point is the DeploymentServer. The DeploymentServer represents the core controller of all ATG Content Administration deployment operations and provides API access to the targets and agents where assets are deployed.
The deployment process can be outlined as follows:
ATG Content Administration deployment system assembles the data to deploy and provides that data to the DAF DeploymentManager.
The DeploymentManager that handles the deployment sends JMS messages to DeploymentManager instances on other ATG servers.
Each DeploymentManager instance spawns multiple threads to perform the deployment.
After the data transfer is complete, the DeploymentManager returns control to the ATG Content Administration deployment system.
Note: If the deployment process fails at any point, the DeploymentManager returns control to the ATG Content Administration deployment system. For more information on failure handling, see Deployment Recovery.
Enabling distributed deployments
By default, deployment events are sent locally and only to the server that initiated the deployment. If you want to use distributed deployment instead, so that deployment events are sent as JMS messages to any configured listener, set the DeploymentManager’s useDistributedDeployment property to true. For more information about distributed deployment, see Using DAF Deployment in the ATG Programming Guide.
Post-data transfer tasks
If the data transfer is successful, the ATG Content Administration deployment system performs these tasks:
Updates each agent’s status.
If the environment is configured for switch mode deployments, performs the appropriate switches on the agent servers’ switchable repositories and VFSs.
Invalidates repository caches where necessary.
DAF deployment architecture and its processes and phases are described in detail in the Using DAF Deployment chapter of the ATG Programming Guide.
