Class EnvironmentPropertySource

java.lang.Object

org.apache.tomcat.util.digester.EnvironmentPropertySource

All Implemented Interfaces:

IntrospectionUtils.PropertySource, IntrospectionUtils.SecurePropertySource

public class EnvironmentPropertySource
extends Object
implements IntrospectionUtils.SecurePropertySource

A IntrospectionUtils.SecurePropertySource that uses environment variables to resolve expressions.

Usage example:

Configure the certificate with environment variables.

  
    <SSLHostConfig>
          <Certificate certificateKeyFile="${CERTIFICATE_KEY_FILE}"
                       certificateFile="${CERTIFICATE_FILE}"
                       certificateChainFile="${CERTIFICATE_CHAIN_FILE}"
                       type="RSA" />
    </SSLHostConfig> 

How to configure:

  echo "org.apache.tomcat.util.digester.PROPERTY_SOURCE=org.apache.tomcat.util.digester.EnvironmentPropertySource" >> conf/catalina.properties

or add this to CATALINA_OPTS

  -Dorg.apache.tomcat.util.digester.PROPERTY_SOURCE=org.apache.tomcat.util.digester.EnvironmentPropertySource

NOTE: When configured the PropertySource for resolving expressions from system properties is still active.

See Also:

• Digester
• Tomcat Configuration Reference System Properties

Constructor Summary

Constructors

Constructor	Description
EnvironmentPropertySource()

Method Summary

Modifier and Type	Method	Description
String	getProperty(String key)
String	getProperty(String key, ClassLoader classLoader)	Obtain a property value, checking that code associated with the provided class loader has permission to access the property.

Methods inherited from class Object

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

Constructor Details

EnvironmentPropertySource

public EnvironmentPropertySource()

Method Details

getProperty

public String getProperty(String key)

Specified by:

getProperty in interface IntrospectionUtils.PropertySource

getProperty

public String getProperty(String key,
 ClassLoader classLoader)

Description copied from interface: IntrospectionUtils.SecurePropertySource

Obtain a property value, checking that code associated with the provided class loader has permission to access the property. If the classLoader is null or if classLoader does not implement PermissionCheck then the property value will be looked up without a call to PermissionCheck.check(java.security.Permission)

Specified by:

getProperty in interface IntrospectionUtils.SecurePropertySource

Parameters:

key - The key of the requested property

classLoader - The class loader associated with the code that trigger the property lookup

Returns:

The property value or null if it could not be found or if PermissionCheck.check(java.security.Permission) fails