org.apache.nifi.web.util

Class WebUtils

java.lang.Object

org.apache.nifi.web.util.WebUtils

public final class WebUtils
extends Object

Common utilities related to web development.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) static ReadWriteLock	lock
private static org.slf4j.Logger	logger

Constructor Summary

Constructors

Modifier	Constructor and Description
private	WebUtils()

Method Summary

Modifier and Type	Method and Description
static com.sun.jersey.api.client.Client	createClient(com.sun.jersey.api.client.config.ClientConfig config) Creates a client for non-secure requests.
static com.sun.jersey.api.client.Client	createClient(com.sun.jersey.api.client.config.ClientConfig config, SSLContext ctx) Creates a client for secure requests.
private static com.sun.jersey.api.client.Client	createClientHelper(com.sun.jersey.api.client.config.ClientConfig config, SSLContext ctx) A helper method for creating clients.
static Serializable	deserializeHexToObject(String hexEncodedObject) Deserializes a Java serialized, hex-encoded string into a Java object.
static String	serializeObjectToHex(Serializable obj) Serializes the given object to hexadecimal.

Methods inherited from class java.lang.Object

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

Field Detail

logger

private static org.slf4j.Logger logger

lock

static final ReadWriteLock lock

Constructor Detail

WebUtils

private WebUtils()

Method Detail

createClient

public static com.sun.jersey.api.client.Client createClient(com.sun.jersey.api.client.config.ClientConfig config)

Creates a client for non-secure requests. The client will be created using the given configuration. Additionally, the client will be automatically configured for JSON serialization/deserialization.

Parameters:

config - client configuration

Returns:

a Client instance

createClient

public static com.sun.jersey.api.client.Client createClient(com.sun.jersey.api.client.config.ClientConfig config,
                                                            SSLContext ctx)

Creates a client for secure requests. The client will be created using the given configuration and security context. Additionally, the client will be automatically configured for JSON serialization/deserialization.

Parameters:

config - client configuration

ctx - security context

Returns:

a Client instance

createClientHelper

private static com.sun.jersey.api.client.Client createClientHelper(com.sun.jersey.api.client.config.ClientConfig config,
                                                                   SSLContext ctx)

A helper method for creating clients. The client will be created using the given configuration and security context. Additionally, the client will be automatically configured for JSON serialization/deserialization.

Parameters:

config - client configuration

ctx - security context, which may be null for non-secure client creation

Returns:

a Client instance

serializeObjectToHex

public static String serializeObjectToHex(Serializable obj)

Serializes the given object to hexadecimal. Serialization uses Java's native serialization mechanism, the ObjectOutputStream.

Parameters:

obj - an object

Returns:

the serialized object as hex

deserializeHexToObject

public static Serializable deserializeHexToObject(String hexEncodedObject)
                                           throws ClassNotFoundException

Deserializes a Java serialized, hex-encoded string into a Java object. This method is the inverse of the serializeObjectToHex method in this class.

Parameters:

hexEncodedObject - a string

Returns:

the object

Throws:

ClassNotFoundException - if the class could not be found