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Chapter 139. Hipchat Component

Available as of Camel version 2.15

The Hipchat component supports producing and consuming messages from/to Hipchat service.

Prerequisites

You must have a valid Hipchat user account and get a personal access token that you can use to produce/consume messages.

139.1. URI Format

hipchat://[host][:port]?options

You can append query options to the URI in the following format, ?options=value&option2=value&…​

139.2. URI Options

The Hipchat component has no options.

The Hipchat endpoint is configured using URI syntax: 

hipchat:protocol:host:port

with the following path and query parameters:

139.2.1. Path Parameters (3 parameters):

NameDescriptionDefaultType

protocol

Required The protocol for the hipchat server, such as http.

 

String

host

Required The host for the hipchat server, such as api.hipchat.com

 

String

port

The port for the hipchat server. Is by default 80.

80

Integer

139.2.2. Query Parameters (22 parameters):

NameDescriptionDefaultType

authToken (common)

OAuth 2 auth token

 

String

consumeUsers (common)

Username(s) when consuming messages from the hiptchat server. Multiple user names can be separated by comma.

 

String

httpClient (common)

The CloseableHttpClient reference from registry to be used during API HTTP requests.

CloseableHttpClient default from HttpClient library

CloseableHttpClient

bridgeErrorHandler (consumer)

Allows for bridging the consumer to the Camel routing Error Handler, which mean any exceptions occurred while the consumer is trying to pickup incoming messages, or the likes, will now be processed as a message and handled by the routing Error Handler. By default the consumer will use the org.apache.camel.spi.ExceptionHandler to deal with exceptions, that will be logged at WARN or ERROR level and ignored.

false

boolean

sendEmptyMessageWhenIdle (consumer)

If the polling consumer did not poll any files, you can enable this option to send an empty message (no body) instead.

false

boolean

exceptionHandler (consumer)

To let the consumer use a custom ExceptionHandler. Notice if the option bridgeErrorHandler is enabled then this options is not in use. By default the consumer will deal with exceptions, that will be logged at WARN or ERROR level and ignored.

 

ExceptionHandler

exchangePattern (consumer)

Sets the exchange pattern when the consumer creates an exchange.

 

ExchangePattern

pollStrategy (consumer)

A pluggable org.apache.camel.PollingConsumerPollingStrategy allowing you to provide your custom implementation to control error handling usually occurred during the poll operation before an Exchange have been created and being routed in Camel.

 

PollingConsumerPoll Strategy

synchronous (advanced)

Sets whether synchronous processing should be strictly used, or Camel is allowed to use asynchronous processing (if supported).

false

boolean

backoffErrorThreshold (scheduler)

The number of subsequent error polls (failed due some error) that should happen before the backoffMultipler should kick-in.

 

int

backoffIdleThreshold (scheduler)

The number of subsequent idle polls that should happen before the backoffMultipler should kick-in.

 

int

backoffMultiplier (scheduler)

To let the scheduled polling consumer backoff if there has been a number of subsequent idles/errors in a row. The multiplier is then the number of polls that will be skipped before the next actual attempt is happening again. When this option is in use then backoffIdleThreshold and/or backoffErrorThreshold must also be configured.

 

int

delay (scheduler)

Milliseconds before the next poll. You can also specify time values using units, such as 60s (60 seconds), 5m30s (5 minutes and 30 seconds), and 1h (1 hour).

500

long

greedy (scheduler)

If greedy is enabled, then the ScheduledPollConsumer will run immediately again, if the previous run polled 1 or more messages.

false

boolean

initialDelay (scheduler)

Milliseconds before the first poll starts. You can also specify time values using units, such as 60s (60 seconds), 5m30s (5 minutes and 30 seconds), and 1h (1 hour).

1000

long

runLoggingLevel (scheduler)

The consumer logs a start/complete log line when it polls. This option allows you to configure the logging level for that.

TRACE

LoggingLevel

scheduledExecutorService (scheduler)

Allows for configuring a custom/shared thread pool to use for the consumer. By default each consumer has its own single threaded thread pool.

 

ScheduledExecutor Service

scheduler (scheduler)

To use a cron scheduler from either camel-spring or camel-quartz2 component

none

ScheduledPollConsumer Scheduler

schedulerProperties (scheduler)

To configure additional properties when using a custom scheduler or any of the Quartz2, Spring based scheduler.

 

Map

startScheduler (scheduler)

Whether the scheduler should be auto started.

true

boolean

timeUnit (scheduler)

Time unit for initialDelay and delay options.

MILLISECONDS

TimeUnit

useFixedDelay (scheduler)

Controls if fixed delay or fixed rate is used. See ScheduledExecutorService in JDK for details.

true

boolean

139.3. Scheduled Poll Consumer

This component implements the ScheduledPollConsumer. Only the last message from the provided 'consumeUsers' are retrieved and sent as Exchange body. If you do not want the same message to be retrieved again when there are no new messages on next poll then you can add the idempotent consumer as shown below. All the options on the ScheduledPollConsumer can also be used for more control on the consumer. 

@Override
public void configure() throws Exception {
 String hipchatEndpointUri = "hipchat://?authToken=XXXX&consumeUsers=@Joe,@John";
 from(hipchatEndpointUri)
  .idempotentConsumer(
    simple("${in.header.HipchatMessageDate} ${in.header.HipchatFromUser}"),
    MemoryIdempotentRepository.memoryIdempotentRepository(200)
  )
  .to("mock:result");
}

139.3.1. Message headers set by the Hipchat consumer

HeaderConstantTypeDescription

HipchatFromUser

HipchatConstants.FROM_USER

String

The body has the message that was sent from this user to the owner of authToken

HipchatMessageDate

HipchatConstants.MESSAGE_DATE

String

The date message was sent. The format is ISO-8601 as present in the Hipchat response.

139.4. Hipchat Producer

Producer can send messages to both Room’s and User’s simultaneously. The body of the exchange is sent as message. Sample usage is shown below. Appropriate headers needs to be set. 

@Override
 public void configure() throws Exception {
  String hipchatEndpointUri = "hipchat://?authToken=XXXX";
  from("direct:start")
   .to(hipchatEndpointUri)
   .to("mock:result");
 }

139.4.1. Message headers evaluated by the Hipchat producer

HeaderConstantTypeDescription

HipchatToUser

HipchatConstants.TO_USER

String

The Hipchat user to which the message needs to be sent.

HipchatToRoom

HipchatConstants.TO_ROOM

String

The Hipchat room to which the message needs to be sent.

HipchatMessageFormat

HipchatConstants.MESSAGE_FORMAT

String

Valid formats are 'text' or 'html'. Default: 'text'

HipchatMessageBackgroundColor

HipchatConstants.MESSAGE_BACKGROUND_COLOR

String

Valid color values are 'yellow', 'green', 'red', 'purple', 'gray', 'random'. Default: 'yellow' (Room Only) 

HipchatTriggerNotification

HipchatConstants.TRIGGER_NOTIFY

String

Valid values are 'true' or 'false'. Whether this message should trigger a user notification (change the tab color, play a sound, notify mobile phones, etc). Default: 'false' (Room Only)

139.4.2. Message headers set by the Hipchat producer

HeaderConstantTypeDescription

HipchatToUserResponseStatus

HipchatConstants.TO_USER_RESPONSE_STATUS

StatusLine The status of the API response received when message sent to the user.

HipchatFromUserResponseStatus

139.4.3. Configuring Http Client

The HipChat component allow your own HttpClient configuration. This can be done by defining a reference for CloseableHttpClient in the registry (e.g. Spring Context) and then, set the parameter during the Endpoint definition, for example: hipchat:http://api.hipchat.com?httpClient=#myHttpClient. 

CloseableHttpClient httpclient = HttpClients.custom()
    .setConnectionManager(connManager)
    .setDefaultCookieStore(cookieStore)
    .setDefaultCredentialsProvider(credentialsProvider)
    .setProxy(new HttpHost("myproxy", 8080))
    .setDefaultRequestConfig(defaultRequestConfig)
    .build();

To see more information about Http Client configuration, please check the official documentation.

139.4.4. Dependencies

Maven users will need to add the following dependency to their pom.xml.

pom.xml 

<dependency>
    <groupId>org.apache.camel</groupId>
    <artifactId>camel-hipchat</artifactId>
    <version>${camel-version}</version>
</dependency>

where ${camel-version} must be replaced by the actual version of Camel (2.15.0 or higher)

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