com.unboundid.directory.sdk.sync.api

Class LDAPSyncSourcePlugin

java.lang.Object

com.unboundid.directory.sdk.sync.api.LDAPSyncSourcePlugin

All Implemented Interfaces:

Configurable, ExampleUsageProvider, Reconfigurable<LDAPSyncSourcePluginConfig>, UnboundIDExtension

@Extensible
 @SynchronizationServerExtension(appliesToLocalContent=false,
                                appliesToSynchronizedContent=true)
 @ThreadSafety(level=INTERFACE_THREADSAFE)
public abstract class LDAPSyncSourcePlugin
extends java.lang.Object
implements UnboundIDExtension, Reconfigurable<LDAPSyncSourcePluginConfig>, ExampleUsageProvider

This class defines an API that must be implemented by extensions that perform processing on synchronization operations within an LDAP Sync Source. These extensions may be used to

• Filter out certain changes from being synchronized.
• Change how an entry is fetched.

A note on exception handling: in general subclasses should not catch LDAPExceptions that are thrown when using the provided LDAPInterface unless there are specific exceptions that are expected. The Data Sync Server will handle LDAPExceptions in an appropriate way based on the specific cause of the exception. For example, some errors will result in the SyncOperation being retried, and others will trigger fail over to a different server.

Configuring LDAP Sync Source Plugins

In order to configure an LDAP sync source plugin created using this API, use a command like:

      dsconfig create-sync-source-plugin \
           --plugin-name "{plugin-name}" \
           --type third-party-ldap \
           --set "extension-class:{class-name}" \
           --set "extension-argument:{name=value}"
 

where "{plugin-name}" is the name to use for the LDAP sync source plugin instance, "{class-name}" is the fully-qualified name of the Java class that extends com.unboundid.directory.sdk.sync.api.LDAPSyncSourcePlugin, and "{name=value}" represents name-value pairs for any arguments to provide to the LDAP sync source plugin. If multiple arguments should be provided to the LDAP sync source plugin, then the "--set extension-argument:{name=value}" option should be provided multiple times.

See Also:

ScriptedLDAPSyncSourcePlugin

Constructor Summary

Constructors

Constructor and Description
LDAPSyncSourcePlugin() Creates a new instance of this LDAP sync source plugin.

Method Summary

Modifier and Type	Method and Description
ResultCode	applyConfiguration(LDAPSyncSourcePluginConfig config, ArgumentParser parser, java.util.List<java.lang.String> adminActionsRequired, java.util.List<java.lang.String> messages) Attempts to apply the configuration from the provided argument parser to this extension.
void	defineConfigArguments(ArgumentParser parser) Updates the provided argument parser to define any configuration arguments which may be used by this extension.
void	finalizeLDAPSyncSourcePlugin() Performs any cleanup which may be necessary when this LDAP sync source plugin is taken out of service.
java.util.Map<java.util.List<java.lang.String>,java.lang.String>	getExamplesArgumentSets() Retrieves a map containing examples of configurations that may be used for this extension.
abstract java.lang.String[]	getExtensionDescription() Retrieves a human-readable description for this extension.
abstract java.lang.String	getExtensionName() Retrieves a human-readable name for this extension.
void	initializeLDAPSyncSourcePlugin(SyncServerContext serverContext, LDAPSyncSourcePluginConfig config, ArgumentParser parser) Initializes this LDAP sync source plugin.
boolean	isConfigurationAcceptable(LDAPSyncSourcePluginConfig config, ArgumentParser parser, java.util.List<java.lang.String> unacceptableReasons) Indicates whether the configuration represented by the provided argument parser is acceptable for use by this extension.
PostStepResult	postFetch(LDAPInterface sourceConnection, java.util.concurrent.atomic.AtomicReference<Entry> fetchedEntryRef, SyncOperation operation) This method is called after fetching a source entry.
PreStepResult	preFetch(LDAPInterface sourceConnection, SearchRequest searchRequest, java.util.List<SearchResultEntry> searchResults, SyncOperation operation) This method is called before each search for a source entry.
java.lang.String	toString() Retrieves a string representation of this LDAP sync source plugin.
abstract void	toString(java.lang.StringBuilder buffer) Appends a string representation of this LDAP sync source plugin to the provided buffer.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

LDAPSyncSourcePlugin

public LDAPSyncSourcePlugin()

Creates a new instance of this LDAP sync source plugin. All sync source implementations must include a default constructor, but any initialization should generally be done in the initializeLDAPSyncSourcePlugin method.

Method Detail

getExtensionName

public abstract java.lang.String getExtensionName()

Retrieves a human-readable name for this extension.

Specified by:

getExtensionName in interface UnboundIDExtension

Returns:

A human-readable name for this extension.

getExtensionDescription

public abstract java.lang.String[] getExtensionDescription()

Retrieves a human-readable description for this extension. Each element of the array that is returned will be considered a separate paragraph in generated documentation.

Specified by:

getExtensionDescription in interface UnboundIDExtension

Returns:

A human-readable description for this extension, or null or an empty array if no description should be available.

defineConfigArguments

public void defineConfigArguments(ArgumentParser parser)
                           throws ArgumentException

Updates the provided argument parser to define any configuration arguments which may be used by this extension. The argument parser may also be updated to define relationships between arguments (e.g., to specify required, exclusive, or dependent argument sets).

Specified by:

defineConfigArguments in interface Configurable

Parameters:

parser - The argument parser to be updated with the configuration arguments which may be used by this extension.

Throws:

ArgumentException - If a problem is encountered while updating the provided argument parser.

initializeLDAPSyncSourcePlugin

public void initializeLDAPSyncSourcePlugin(SyncServerContext serverContext,
                                           LDAPSyncSourcePluginConfig config,
                                           ArgumentParser parser)
                                    throws LDAPException

Initializes this LDAP sync source plugin. This method will be called before any other methods in the class.

Parameters:

serverContext - A handle to the server context for the Data Sync Server in which this extension is running. Extensions should typically store this in a class member.

config - The general configuration for this proxy transformation.

parser - The argument parser which has been initialized from the configuration for this LDAP sync source plugin.

Throws:

LDAPException - If a problem occurs while initializing this ldap sync source plugin.

isConfigurationAcceptable

public boolean isConfigurationAcceptable(LDAPSyncSourcePluginConfig config,
                                         ArgumentParser parser,
                                         java.util.List<java.lang.String> unacceptableReasons)

Indicates whether the configuration represented by the provided argument parser is acceptable for use by this extension. The parser will have been used to parse any configuration available for this extension, and any automatic validation will have been performed. This method may be used to perform any more complex validation which cannot be performed automatically by the argument parser.

Specified by:

isConfigurationAcceptable in interface Reconfigurable<LDAPSyncSourcePluginConfig>

Parameters:

config - The general configuration for this extension.

parser - The argument parser that has been used to parse the proposed configuration for this extension.

unacceptableReasons - A list to which messages may be added to provide additional information about why the provided configuration is not acceptable.

Returns:

true if the configuration in the provided argument parser appears to be acceptable, or false if not.

applyConfiguration

public ResultCode applyConfiguration(LDAPSyncSourcePluginConfig config,
                                     ArgumentParser parser,
                                     java.util.List<java.lang.String> adminActionsRequired,
                                     java.util.List<java.lang.String> messages)

Attempts to apply the configuration from the provided argument parser to this extension.

Specified by:

applyConfiguration in interface Reconfigurable<LDAPSyncSourcePluginConfig>

Parameters:

config - The general configuration for this extension.

parser - The argument parser that has been used to parse the new configuration for this extension.

adminActionsRequired - A list to which messages may be added to provide additional information about any additional administrative actions that may be required to apply some of the configuration changes.

messages - A list to which messages may be added to provide additional information about the processing performed by this method.

Returns:

A result code providing information about the result of applying the configuration change. A result of SUCCESS should be used to indicate that all processing completed successfully. Any other result will indicate that a problem occurred during processing.

finalizeLDAPSyncSourcePlugin

public void finalizeLDAPSyncSourcePlugin()

Performs any cleanup which may be necessary when this LDAP sync source plugin is taken out of service. This can happen when it is deleted from the configuration and at server shutdown.

preFetch

public PreStepResult preFetch(LDAPInterface sourceConnection,
                              SearchRequest searchRequest,
                              java.util.List<SearchResultEntry> searchResults,
                              SyncOperation operation)
                       throws LDAPException

This method is called before each search for a source entry. If this method should only be run once per operation then an attachment can be added to the SyncOp for tracking A connection to the source server is provided. This method is overridden by plugins that need to manipulate an operation prior to source entry being fetched.

Parameters:

sourceConnection - A connection to the source server.

searchRequest - The search request that the LDAP Sync Source will use to fetch the entry.

searchResults - A list of entries that have been fetched. When the search criteria matches multiple entries, they should all be returned. A plugin that wishes to implement the fetch should put the fetched entries here and return

operation - The synchronization operation for this change.

Returns:

The result of the plugin processing. Be very careful when returning PostStepResult#RETRY_OPERATION_UNLIMITED as this can stall all in flight operations until this operation completes. This return value should only be used in situations where a remote service (e.g., the LDAP server) is unavailable. In this case, it's preferable to just throw the underlying LDAPException, which the Data Sync Server will handle correctly based on the type of the operation.

Throws:

LDAPException - In general subclasses should not catch LDAPExceptions that are thrown when using the LDAPInterface unless there are specific exceptions that are expected. The Data Sync Server will handle LDAPExceptions in an appropriate way based on the specific cause of the exception. For example, some errors will result in the SyncOperation being retried, and others will trigger fail over to a different server. Plugins should only throw LDAPException for errors related to communication with the LDAP server. Use the return code to indicate other types of errors, which might require retry.

postFetch

public PostStepResult postFetch(LDAPInterface sourceConnection,
                                java.util.concurrent.atomic.AtomicReference<Entry> fetchedEntryRef,
                                SyncOperation operation)
                         throws LDAPException

This method is called after fetching a source entry. A connection to the source server is provided. This method is overridden by plugins that need to manipulate the search results that are returned to the Sync Pipe. This can include filtering out certain entries, remove information from the entries, or adding additional information, possibly by doing a followup LDAP search.

Parameters:

sourceConnection - A connection to the source server.

fetchedEntryRef - A reference to the entry that was fetched. This entry can be edited in place, or the reference can be changed to point to a different entry that the plugin constructs. The referenced entry might be null if no matched entry was found at the source.

operation - The synchronization operation for this change.

Returns:

The result of the plugin processing. Be very careful when returning PostStepResult#RETRY_OPERATION_UNLIMITED as this can stall all in flight operations until this operation completes. This return value should only be used in situations where a remote service (e.g., the LDAP server) is unavailable. In this case, it's preferable to just throw the underlying LDAPException, which the Data Sync Server will handle correctly based on the type of the operation.

Throws:

LDAPException - In general subclasses should not catch LDAPExceptions that are thrown when using the LDAPInterface unless there are specific exceptions that are expected. The Data Sync Server will handle LDAPExceptions in an appropriate way based on the specific cause of the exception. For example, some errors will result in the SyncOperation being retried, and others will trigger fail over to a different server. Plugins should only throw LDAPException for errors related to communication with the LDAP server. Use the return code to indicate other types of errors, which might require retry.

toString

public final java.lang.String toString()

Retrieves a string representation of this LDAP sync source plugin.

Overrides:

toString in class java.lang.Object

Returns:

A string representation of this LDAP sync source plugin.

toString

public abstract void toString(java.lang.StringBuilder buffer)

Appends a string representation of this LDAP sync source plugin to the provided buffer.

Parameters:

buffer - The buffer to which the string representation should be appended.

getExamplesArgumentSets

public java.util.Map<java.util.List<java.lang.String>,java.lang.String> getExamplesArgumentSets()

Retrieves a map containing examples of configurations that may be used for this extension. The map key should be a list of sample arguments, and the corresponding value should be a description of the behavior that will be exhibited by the extension when used with that configuration.

Specified by:

getExamplesArgumentSets in interface ExampleUsageProvider

Returns:

A map containing examples of configurations that may be used for this extension. It may be null or empty if there should not be any example argument sets.