org.gecko.util.pushstreams

Class PushStreamHelper

java.lang.Object

org.gecko.util.pushstreams.PushStreamHelper

All Implemented Interfaces:

PushStreamConstants

public class PushStreamHelper
extends java.lang.Object
implements PushStreamConstants

Helper class to configure push streams

Since:

29.11.2018

Field Summary

Fields inherited from interface org.gecko.util.pushstreams.PushStreamConstants

PROP_ACK_CONSUMER, PROP_ACK_ERROR, PROP_ACK_FILTER, PROP_BUFFER_QUEUE, PROP_BUFFER_SIZE, PROP_EXECUTOR, PROP_NACK_CONSUMER, PROP_PARALLELISM, PROP_PUSHBACK_POLICY, PROP_PUSHBACK_POLICY_OPTION, PROP_PUSHBACK_POLICY_OPTION_BY_NAME, PROP_PUSHBACK_POLICY_TIME, PROP_QUEUE_POLICY, PROP_QUEUE_POLICY_OPTION, PROP_SCHEDULED_EXECUTOR

Constructor Summary

Constructors

Constructor and Description
PushStreamHelper()

Method Summary

Modifier and Type	Method and Description
static <T> <any>	configurePushStreamBuilder(<any> builder, PushStreamContext<T> context) Configures an PushStreamBuilder with the given PushStreamContext
static <T> <any>	configurePushStreamBuilder(<any> source, PushStreamContext<T> context) Configures an PushStreamBuilder with the given PushStreamContext and PushEventSource
static <T> <any>	createPushStream(<any> builder, PushStreamContext<T> context) Creates a PushStream instance out of the given configuration and builder
static <T> <any>	createPushStream(<any> source, PushStreamContext<T> context) Creates a PushStream instance out of the given configuration and PushEventSource
static <T> AcknowledgingEventSource<T>	fromClass(java.lang.Class<T> type, PushStreamContext<T> context) Creates a acknowledging event source for the class type
static <T> AcknowledgingEventSource<T>	fromSimpleEventSource(<any> eventSource, PushStreamContext<T> context) Creates a acknowledging event source for the simple push event source
static <T> PushStreamContext<T>	getPushStreamContext(java.util.Map<java.lang.String,java.lang.Object> options) Create a Pus n options map out of the PushStreamContext.
static java.util.Map<java.lang.String,java.lang.Object>	getPushStreamOptions(PushStreamContext<?> context) Create an options map out of the PushStreamContext.

Methods inherited from class java.lang.Object

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

Constructor Detail

PushStreamHelper

public PushStreamHelper()

Method Detail

createPushStream

public static <T> <any> createPushStream(<any> builder,
                                         PushStreamContext<T> context)

Creates a PushStream instance out of the given configuration and builder

Parameters:

builder - the PushStreamBuilder instance, must not be null

context - the PushStreamContext with the configuration data

Returns:

PushStream instance

createPushStream

public static <T> <any> createPushStream(<any> source,
                                         PushStreamContext<T> context)

Creates a PushStream instance out of the given configuration and PushEventSource

Parameters:

source - the PushEventSource instance, must not be null

context - the PushStreamContext with the configuration data

Returns:

PushStream instance

configurePushStreamBuilder

public static <T> <any> configurePushStreamBuilder(<any> builder,
                                                   PushStreamContext<T> context)

Configures an PushStreamBuilder with the given PushStreamContext

Parameters:

builder - the PushStreamBuilder instance, must not be null

context - the PushStreamContext with the configuration data

Returns:

PushStreamBuilder instance

configurePushStreamBuilder

public static <T> <any> configurePushStreamBuilder(<any> source,
                                                   PushStreamContext<T> context)

Configures an PushStreamBuilder with the given PushStreamContext and PushEventSource

Parameters:

source - the PushEventSource instance, must not be null

context - the PushStreamContext with the configuration data

Returns:

PushStreamBuilder instance

getPushStreamOptions

public static java.util.Map<java.lang.String,java.lang.Object> getPushStreamOptions(PushStreamContext<?> context)

Create an options map out of the PushStreamContext.

Parameters:

context - the context

Returns:

the options map or an empty map. Will never be null

getPushStreamContext

public static <T> PushStreamContext<T> getPushStreamContext(java.util.Map<java.lang.String,java.lang.Object> options)

Create a Pus n options map out of the PushStreamContext.

Parameters:

context - the context

Returns:

the options map or an empty map. Will never be null

fromClass

public static <T> AcknowledgingEventSource<T> fromClass(java.lang.Class<T> type,
                                                        PushStreamContext<T> context)

Creates a acknowledging event source for the class type

Parameters:

type - the class type

context - the push stream context, can be null

Returns:

the instance of the AcknowledgingEventSource

fromSimpleEventSource

public static <T> AcknowledgingEventSource<T> fromSimpleEventSource(<any> eventSource,
                                                                    PushStreamContext<T> context)

Creates a acknowledging event source for the simple push event source

Parameters:

eventSource - the simple push event source

context - the push stream context, can be null

Returns:

the instance of the AcknowledgingEventSource