LDIF

Since Camel 2.20

Only producer is supported

The LDIF component allows you to do updates on an LDAP server from a LDIF body content.

This component uses a basic URL syntax to access the server. It uses the Apache DS LDAP library to process the LDIF. After processing the LDIF, the response body will be a list of statuses for success/failure of each entry.

The Apache LDAP API is very sensitive to LDIF syntax errors. If in doubt, refer to the unit tests to see an example of each change type.

Maven users will need to add the following dependency to their pom.xml for this component:

<dependency>
    <groupId>org.apache.camel</groupId>
    <artifactId>camel-ldif</artifactId>
    <version>x.x.x</version>
    <!-- use the same version as your Camel core version -->
</dependency>

URI format

ldif:ldapServerBean[?options]

The ldapServerBean portion of the URI refers to a LdapConnection. This should be constructed from a factory at the point of use to avoid connection timeouts. The LDIF component only supports producer endpoints, which means that an ldif URI cannot appear in the from at the start of a route.

For SSL configuration, refer to the camel-ldap component where there is an example of setting up a custom SocketFactory instance.

Configuring Options

Camel components are configured on two separate levels:

  • component level

  • endpoint level

Configuring Component Options

The component level is the highest level which holds general and common configurations that are inherited by the endpoints. For example a component may have security settings, credentials for authentication, urls for network connection and so forth.

Some components only have a few options, and others may have many. Because components typically have pre configured defaults that are commonly used, then you may often only need to configure a few options on a component; or none at all.

Configuring components can be done with the Component DSL, in a configuration file (application.properties|yaml), or directly with Java code.

Configuring Endpoint Options

Where you find yourself configuring the most is on endpoints, as endpoints often have many options, which allows you to configure what you need the endpoint to do. The options are also categorized into whether the endpoint is used as consumer (from) or as a producer (to), or used for both.

Configuring endpoints is most often done directly in the endpoint URI as path and query parameters. You can also use the Endpoint DSL as a type safe way of configuring endpoints.

A good practice when configuring options is to use Property Placeholders, which allows to not hardcode urls, port numbers, sensitive information, and other settings. In other words placeholders allows to externalize the configuration from your code, and gives more flexibility and reuse.

The following two sections lists all the options, firstly for the component followed by the endpoint.

Component Options

The LDIF component supports 2 options, which are listed below.

Name Description Default Type

lazyStartProducer (producer)

Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel’s routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing.

boolean

autowiredEnabled (advanced)

Whether autowiring is enabled. This is used for automatic autowiring options (the option must be marked as autowired) by looking up in the registry to find if there is a single instance of matching type, which then gets configured on the component. This can be used for automatic configuring JDBC data sources, JMS connection factories, AWS Clients, etc.

boolean

Endpoint Options

The LDIF endpoint is configured using URI syntax:

ldif:ldapConnectionName

with the following path and query parameters:

Path Parameters (1 parameters)

Name Description Default Type

ldapConnectionName (producer)

Required The name of the LdapConnection bean to pull from the registry. Note that this must be of scope prototype to avoid it being shared among threads or using a connection that has timed out.

String

Query Parameters (1 parameters)

Name Description Default Type

lazyStartProducer (producer)

Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel’s routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing.

boolean

Body types:

The body can be a URL to an LDIF file or an inline LDIF file. To signify the difference in body types, an inline LDIF must start with:

version: 1

If not, the component will try to parse the body as a URL.

Result

The result is returned in the Out body as a ArrayList<java.lang.String> object. This contains either "success" or an Exception message for each LDIF entry.

LdapConnection

The URI, ldif:ldapConnectionName, references a bean with the ID, ldapConnectionName. The ldapConnection can be configured using a LdapConnectionConfig bean. Note that the scope must have a scope of prototype to avoid the connection being shared or picking up a stale connection.

The LdapConnection bean may be defined as follows in Spring XML:

<bean id="ldapConnectionOptions" class="org.apache.directory.ldap.client.api.LdapConnectionConfig">
  <property name="ldapHost" value="${ldap.host}"/>
  <property name="ldapPort" value="${ldap.port}"/>
  <property name="name" value="${ldap.username}"/>
  <property name="credentials" value="${ldap.password}"/>
  <property name="useSsl" value="false"/>
  <property name="useTls" value="false"/>
</bean>

<bean id="ldapConnectionFactory" class="org.apache.directory.ldap.client.api.DefaultLdapConnectionFactory">
  <constructor-arg index="0" ref="ldapConnectionOptions"/>
</bean>

<bean id="ldapConnection" factory-bean="ldapConnectionFactory" factory-method="newLdapConnection" scope="prototype"/>

or in a OSGi blueprint.xml:

<bean id="ldapConnectionOptions" class="org.apache.directory.ldap.client.api.LdapConnectionConfig">
  <property name="ldapHost" value="${ldap.host}"/>
  <property name="ldapPort" value="${ldap.port}"/>
  <property name="name" value="${ldap.username}"/>
  <property name="credentials" value="${ldap.password}"/>
  <property name="useSsl" value="false"/>
  <property name="useTls" value="false"/>
</bean>

<bean id="ldapConnectionFactory" class="org.apache.directory.ldap.client.api.DefaultLdapConnectionFactory">
  <argument ref="ldapConnectionOptions"/>
</bean>

<bean id="ldapConnection" factory-ref="ldapConnectionFactory" factory-method="newLdapConnection" scope="prototype"/>

Samples

Following on from the Spring configuration above, the code sample below sends an LDAP request to filter search a group for a member. The Common Name is then extracted from the response.

ProducerTemplate<Exchange> template = exchange.getContext().createProducerTemplate();

List<?> results = (Collection<?>) template.sendBody("ldif:ldapConnection, "LDiff goes here");

if (results.size() > 0) {
  // Check for no errors

  for (String result : results) {
    if ("success".equalTo(result)) {
      // LDIF entry success
    } else {
      // LDIF entry failure
    }
  }
}

Spring Boot Auto-Configuration

When using ldif with Spring Boot make sure to use the following Maven dependency to have support for auto configuration:

<dependency>
  <groupId>org.apache.camel.springboot</groupId>
  <artifactId>camel-ldif-starter</artifactId>
  <version>x.x.x</version>
  <!-- use the same version as your Camel core version -->
</dependency>

The component supports 3 options, which are listed below.

Name Description Default Type

camel.component.ldif.autowired-enabled

Whether autowiring is enabled. This is used for automatic autowiring options (the option must be marked as autowired) by looking up in the registry to find if there is a single instance of matching type, which then gets configured on the component. This can be used for automatic configuring JDBC data sources, JMS connection factories, AWS Clients, etc.

true

Boolean

camel.component.ldif.enabled

Whether to enable auto configuration of the ldif component. This is enabled by default.

Boolean

camel.component.ldif.lazy-start-producer

Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel’s routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing.

false

Boolean