org.apache.sling.distribution.agent.spi

Interface DistributionAgent

@ConsumerType
public interface DistributionAgent

A distribution agent is responsible for handling DistributionRequests.

This means executing actions of e.g.: a specific DistributionRequestTypes on specific path(s) which will resume pulling resources from a certain Sling instance and / or pushing resources to other instances.

Method Summary

Modifier and Type	Method and Description
@NotNull DistributionResponse	execute(@NotNull ResourceResolver resourceResolver, @NotNull DistributionRequest distributionRequest) Perform a DistributionRequest to distribute content from a source instance to a target instance.
@NotNull DistributionLog	getLog() Get the agent log
@Nullable DistributionQueue	getQueue(@NotNull String name) Get the agent queue with the given name
@NotNull Iterable<String>	getQueueNames() Retrieves the names of the queues for this agent.
@NotNull DistributionAgentState	getState() returns the state of the agent

Method Detail

getQueueNames

@NotNull
@NotNull Iterable<String> getQueueNames()

Retrieves the names of the queues for this agent.

Returns:

the list of queue names

getQueue

@Nullable
@Nullable DistributionQueue getQueue(@NotNull
                                               @NotNull String name)

Get the agent queue with the given name

Parameters:

name - a queue name

Returns:

a DistributionQueue with the given name bound to this agent, if it exists, null otherwise

getLog

@NotNull
@NotNull DistributionLog getLog()

Get the agent log

Returns:

the log for this agent

getState

@NotNull
@NotNull DistributionAgentState getState()

returns the state of the agent

Returns:

the agent state

execute

@NotNull
@NotNull DistributionResponse execute(@NotNull
                                               @NotNull ResourceResolver resourceResolver,
                                               @NotNull
                                               @NotNull DistributionRequest distributionRequest)
                                        throws DistributionException

Perform a DistributionRequest to distribute content from a source instance to a target instance. The content to be sent will be assembled according to the information contained in the request. A DistributionResponse holding the DistributionRequestState of the provided request will be returned. Synchronous DistributionAgents will usually block until the execution has finished while asynchronous agents will usually return the response as soon as the content to be distributed has been assembled and scheduled for distribution.

Parameters:

distributionRequest - the distribution request

resourceResolver - the resource resolver used for authorizing the request,

Returns:

a DistributionResponse

Throws:

DistributionException - if any error happens during the execution of the request or if the authentication fails