IDM 7.2.2

Groovy Connector Toolkit

Connectors continue to be released outside the IDM release. For the latest documentation, refer to the ICF documentation.

The generic Groovy Connector Toolkit runs a Groovy script for any ICF operation, such as search, update, create, and others, on any external resource.

The Groovy Connector Toolkit is not a complete connector in the traditional sense. Rather, it is a framework within which you must write your own Groovy scripts to address the requirements of your implementation.

Configure scripted Groovy connectors

You cannot configure a scripted Groovy connector through the UI. Configure the connector over REST, as described in Configure Connectors Over REST.

Alternatively, create a connector configuration file in your project’s conf directory. A number of sample configurations for scripted Groovy implementations are provided in openidm/samples/example-configurations/provisioners/provisioner.openicf-scriptedimplementation.json. Use these as the basis for configuring your own scripted connector.

The Samples describes a number of scripted connector implementations. The scripts provided with these samples demonstrate how the Groovy Connector Toolkit can be used. These scripts cannot be used as is in your deployment, but are a good starting point from which to base your customization. For information about writing your own scripts, see Scripted connectors with Groovy.

Validate pooled connections

The scripted SQL connector uses the Tomcat JDBC Connection Pool to manage its connections. Occasionally, a JDBC resource accessed by the scripted SQL connector might become unavailable for a period. When the resource comes back online, IDM is able to recover automatically and resume operations. However, the connector might not be able to refresh its connection pool and might then pass a closed connection to its scripts. This can affect operations until IDM is restarted.

To avoid this situation, you can configure connection validation, where connections are validated before being borrowed from the connection pool.

To configure connection validation, add the following properties to the configurationProperties object in your connector configuration:

testOnBorrow

Validates the connection object before it is borrowed from the pool. If the object fails to validate, it is dropped from the pool and the connector attempts to borrow another object.

For this property to have an effect, you must set validationQuery to a non-null string.

validationQuery

The SQL query used to validate connections from the pool before returning them to the caller.

The precise query will differ, depending on the database that you are accessing. The following list provides sample queries for common databases:

HyperSQL DataBase (HSQLDB)
select 1 from INFORMATION_SCHEMA.SYSTEM_USERS
Oracle DB
select 1 from dual
DB2
select 1 from sysibm.sysdummy1
MySQL
select 1
Microsoft SQL
select 1
PostgreSQL
select 1
Ingres Database
select 1
Apache Derby
values 1
H2 Database
select 1
Firebird SQL
select 1 from rdb$database
validationInterval

Specifies the maximum frequency (in milliseconds) at which validation is run. If a connection is due for validation but was previously validated within this interval, it is not validated again.

The larger the value, the better the connector performance. However, with a large value you increase the chance of a stale connection being presented to the connector.

Connection validation can have an impact on performance and should not be done too frequently. With the following configuration, connections are validated no more than every 34 seconds:

{
    ...
    "configurationProperties" : {
        ...
        "testOnBorrow" : true,
        "validationQuery" : "select 1 from dual",
        "validationInterval" : 34000,
        ...
    },
    ...
}

Use custom properties in scripts

The customConfiguration and customSensitiveConfiguration properties enable you to inject custom properties into your scripts. Properties listed in customSensitiveConfiguration are encrypted.

For example, the following excerpt of the scripted Kerberos provisioner file shows how these properties inject the Kerberos user and encrypted password into the scripts, using the kadmin command.

"customConfiguration" : "kadmin { cmd = '/usr/sbin/kadmin.local'; user='<KADMIN USERNAME>'; default_realm='<REALM>' }",
"customSensitiveConfiguration" : "kadmin { password = '<KADMIN PASSWORD>'}",

Debug Groovy scripts

When you call a Groovy script from the Groovy connector, you can use the SLF4J logging facility to obtain debug information.

For instructions on how to use this facility, see the KnowledgeBase article How do I add logging to Groovy scripts in IDM.

Script compilation and caching

The first time a script is read, it is compiled (from Groovy script to Java bytecode) and cached in memory. Each time the script is called, the Groovy script engine checks the last modified of the script file to see if it has changed. If it has not changed, the cached bytecode is executed. If it has changed, the script is reloaded, compiled and cached.

Implemented interfaces

The following tables list the ICF interfaces that are implemented for non-poolable and poolable connector implementations:

OpenICF Interfaces Implemented by the Scripted Groovy Connector

The Scripted Groovy Connector implements the following OpenICF interfaces. For additional details, see ICF interfaces:

Authenticate

Provides simple authentication with two parameters, presumed to be a user name and password.

Create

Creates an object and its uid.

Delete

Deletes an object, referenced by its uid.

Resolve Username

Resolves an object by its username and returns the uid of the object.

Schema

Describes the object types, operations, and options that the connector supports.

Script on Connector

Enables an application to run a script in the context of the connector.

Any script that runs on the connector has the following characteristics:

  • The script runs in the same execution environment as the connector and has access to all the classes to which the connector has access.

  • The script has access to a connector variable that is equivalent to an initialized instance of the connector. At a minimum, the script can access the connector configuration.

  • The script has access to any script arguments passed in by the application.

Script on Resource

Runs a script on the target resource that is managed by this connector.

Search

Searches the target resource for all objects that match the specified object class and filter.

Sync

Polls the target resource for synchronization events, that is, native changes to objects on the target resource.

Test

Tests the connector configuration.

Testing a configuration checks all elements of the environment that are referred to by the configuration are available. For example, the connector might make a physical connection to a host that is specified in the configuration to verify that it exists and that the credentials that are specified in the configuration are valid.

This operation might need to connect to a resource, and, as such, might take some time. Do not invoke this operation too often, such as before every provisioning operation. The test operation is not intended to check that the connector is alive (that is, that its physical connection to the resource has not timed out).

You can invoke the test operation before a connector configuration has been validated.

Update

Updates (modifies or replaces) objects on a target resource.

OpenICF Interfaces Implemented by the Scripted Poolable Groovy Connector

The Scripted Poolable Groovy Connector implements the following OpenICF interfaces. For additional details, see ICF interfaces:

Authenticate

Provides simple authentication with two parameters, presumed to be a user name and password.

Create

Creates an object and its uid.

Delete

Deletes an object, referenced by its uid.

Resolve Username

Resolves an object by its username and returns the uid of the object.

Schema

Describes the object types, operations, and options that the connector supports.

Script on Connector

Enables an application to run a script in the context of the connector.

Any script that runs on the connector has the following characteristics:

  • The script runs in the same execution environment as the connector and has access to all the classes to which the connector has access.

  • The script has access to a connector variable that is equivalent to an initialized instance of the connector. At a minimum, the script can access the connector configuration.

  • The script has access to any script arguments passed in by the application.

Script on Resource

Runs a script on the target resource that is managed by this connector.

Search

Searches the target resource for all objects that match the specified object class and filter.

Sync

Polls the target resource for synchronization events, that is, native changes to objects on the target resource.

Test

Tests the connector configuration.

Testing a configuration checks all elements of the environment that are referred to by the configuration are available. For example, the connector might make a physical connection to a host that is specified in the configuration to verify that it exists and that the credentials that are specified in the configuration are valid.

This operation might need to connect to a resource, and, as such, might take some time. Do not invoke this operation too often, such as before every provisioning operation. The test operation is not intended to check that the connector is alive (that is, that its physical connection to the resource has not timed out).

You can invoke the test operation before a connector configuration has been validated.

Update

Updates (modifies or replaces) objects on a target resource.

Configuration properties

The following tables list the configuration properties for non-poolable and poolable connector implementations:

Scripted Groovy Connector Configuration

The Scripted Groovy Connector has the following configurable properties:

Configuration properties

Property Type Default Encrypted(1) Required(2)

customSensitiveConfiguration

GuardedString

null

Yes

No

Custom Sensitive Configuration script for Groovy ConfigSlurper

customConfiguration

String

null

No

Custom Configuration script for Groovy ConfigSlurper

(1) Whether the property value is considered confidential, and is therefore encrypted in IDM.

(2) A list of operations in this column indicates that the property is required for those operations.

Operation Script Files

Property Type Default Encrypted(1) Required(2)

createScriptFileName

String

null

The name of the file used to perform the CREATE operation.

customizerScriptFileName

String

null

No

The script used to customize some function of the connector. Read the documentation for more details.

authenticateScriptFileName

String

null

The name of the file used to perform the AUTHENTICATE operation.

scriptOnResourceScriptFileName

String

null

The name of the file used to perform the RUNSCRIPTONRESOURCE operation.

deleteScriptFileName

String

null

The name of the file used to perform the DELETE operation.

resolveUsernameScriptFileName

String

null

The name of the file used to perform the RESOLVE_USERNAME operation.

searchScriptFileName

String

null

The name of the file used to perform the SEARCH operation.

updateScriptFileName

String

null

The name of the file used to perform the UPDATE operation.

schemaScriptFileName

String

null

The name of the file used to perform the SCHEMA operation.

testScriptFileName

String

null

The name of the file used to perform the TEST operation.

syncScriptFileName

String

null

The name of the file used to perform the SYNC operation.

(1) Whether the property value is considered confidential, and is therefore encrypted in IDM.

(2) A list of operations in this column indicates that the property is required for those operations.

Groovy Engine configuration

Property Type Default Encrypted(1) Required(2)

targetDirectory

File

null

No

Directory into which to write classes.

warningLevel

int

1

No

Warning Level of the compiler

scriptExtensions

String[]

['groovy']

No

Gets the extensions used to find groovy files

minimumRecompilationInterval

int

100

No

Sets the minimum of time after a script can be recompiled.

scriptBaseClass

String

null

No

Base class name for scripts (must derive from Script)

scriptRoots

String[]

null

Yes

The root folder to load the scripts from. If the value is null or empty the classpath value is used.

tolerance

int

10

No

The error tolerance, which is the number of non-fatal errors (per unit) that should be tolerated before compilation is aborted.

debug

boolean

false

No

If true, debugging code should be activated

classpath

String[]

[]

No

Classpath for use during compilation.

disabledGlobalASTTransformations

String[]

null

No

Sets a list of global AST transformations which should not be loaded even if they are defined in META-INF/org.codehaus.groovy.transform.ASTTransformation files. By default, none is disabled.

verbose

boolean

false

No

If true, the compiler should produce action information

sourceEncoding

String

UTF-8

No

Encoding for source files

recompileGroovySource

boolean

false

No

If set to true recompilation is enabled

(1) Whether the property value is considered confidential, and is therefore encrypted in IDM.

(2) A list of operations in this column indicates that the property is required for those operations.

Scripted Poolable Groovy Connector Configuration

The Scripted Poolable Groovy Connector has the following configurable properties:

Configuration properties

Property Type Default Encrypted(1) Required(2)

customSensitiveConfiguration

GuardedString

null

Yes

No

Custom Sensitive Configuration script for Groovy ConfigSlurper

customConfiguration

String

null

No

Custom Configuration script for Groovy ConfigSlurper

(1) Whether the property value is considered confidential, and is therefore encrypted in IDM.

(2) A list of operations in this column indicates that the property is required for those operations.

Operation Script Files

Property Type Default Encrypted(1) Required(2)

createScriptFileName

String

null

The name of the file used to perform the CREATE operation.

customizerScriptFileName

String

null

No

The script used to customize some function of the connector. Read the documentation for more details.

authenticateScriptFileName

String

null

The name of the file used to perform the AUTHENTICATE operation.

scriptOnResourceScriptFileName

String

null

The name of the file used to perform the RUNSCRIPTONRESOURCE operation.

deleteScriptFileName

String

null

The name of the file used to perform the DELETE operation.

resolveUsernameScriptFileName

String

null

The name of the file used to perform the RESOLVE_USERNAME operation.

searchScriptFileName

String

null

The name of the file used to perform the SEARCH operation.

updateScriptFileName

String

null

The name of the file used to perform the UPDATE operation.

schemaScriptFileName

String

null

The name of the file used to perform the SCHEMA operation.

testScriptFileName

String

null

The name of the file used to perform the TEST operation.

syncScriptFileName

String

null

The name of the file used to perform the SYNC operation.

(1) Whether the property value is considered confidential, and is therefore encrypted in IDM.

(2) A list of operations in this column indicates that the property is required for those operations.

Groovy Engine configuration

Property Type Default Encrypted(1) Required(2)

targetDirectory

File

null

No

Directory into which to write classes.

warningLevel

int

1

No

Warning Level of the compiler

scriptExtensions

String[]

['groovy']

No

Gets the extensions used to find groovy files

minimumRecompilationInterval

int

100

No

Sets the minimum of time after a script can be recompiled.

scriptBaseClass

String

null

No

Base class name for scripts (must derive from Script)

scriptRoots

String[]

null

Yes

The root folder to load the scripts from. If the value is null or empty the classpath value is used.

tolerance

int

10

No

The error tolerance, which is the number of non-fatal errors (per unit) that should be tolerated before compilation is aborted.

debug

boolean

false

No

If true, debugging code should be activated

classpath

String[]

[]

No

Classpath for use during compilation.

disabledGlobalASTTransformations

String[]

null

No

Sets a list of global AST transformations which should not be loaded even if they are defined in META-INF/org.codehaus.groovy.transform.ASTTransformation files. By default, none is disabled.

verbose

boolean

false

No

If true, the compiler should produce action information

sourceEncoding

String

UTF-8

No

Encoding for source files

recompileGroovySource

boolean

false

No

If set to true recompilation is enabled

(1) Whether the property value is considered confidential, and is therefore encrypted in IDM.

(2) A list of operations in this column indicates that the property is required for those operations.