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Twitter

Available as of Camel 2.10

The Twitter component enables the most useful features of the Twitter API by encapsulating Twitter4J. It allows direct, polling, or event-driven consumption of timelines, users, trends, and direct messages. Also, it supports producing messages as status updates or direct messages.

Twitter now requires the use of OAuth for all client application authentication. In order to use camel-twitter with your account, you'll need to create a new application within Twitter at https://dev.twitter.com/apps/new and grant the application access to your account. Finally, generate your access token and secret.

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

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

URI format

twitter://endpoint[?options]

TwitterComponent:

The twitter component can be configured with the Twitter account settings which is mandatory to configure before using.
You can also configure these options directly in the endpoint.

Option

Description

consumerKey

The consumer key

consumerSecret

The consumer secret

accessToken

The access token

accessTokenSecret

The access token secret

Consumer Endpoints:

Rather than the endpoints returning a List through one single route exchange, camel-twitter creates one route exchange per returned object. As an example, if "timeline/home" results in five statuses, the route will be executed five times (one for each Status).

Endpoint

Context

Body Type

Notice

directmessage

direct, polling

twitter4j.DirectMessage

 

search

direct, polling

twitter4j.Status

 

streaming/filter

event, polling

twitter4j.Status

 

streaming/sample

event, polling

twitter4j.Status

 

streaming/userevent, polling

twitter4j.Status

twitter4j.DirectMessage
twitter4j.UserList

Camel 2.16: To receive tweets from protected users and accounts.

Camel 2.17: DirectMessages, Favorites, Lists, Following events are now supported

timeline/home

direct, polling

twitter4j.Status

 

timeline/mentions

direct, polling

twitter4j.Status

 

timeline/public

direct, polling

twitter4j.Status

@deprecated. Use timeline/home or direct/home instead. Removed from Camel 2.11 onwards.

timeline/retweetsofme

direct, polling

twitter4j.Status

 

timeline/user

direct, polling

twitter4j.Status

 

trends/daily

Camel 2.10.1: direct, polling

twitter4j.Status

@deprecated. Removed from Camel 2.11 onwards.

trends/weekly

Camel 2.10.1: direct, polling

twitter4j.Status

@deprecated. Removed from Camel 2.11 onwards.

Producer Endpoints:

Endpoint

Body Type

directmessage

String

search

List<twitter4j.Status>

timeline/user

String

URI Options

Name

Default Value

Description

type

direct

direct, event, or polling

delay

 

Delay between polls. The value is 60 seconds by default. The value is in seconds for Camel 2.16 or older. And in millis seconds from Camel 2.17 onwards.

consumerKey

null

Consumer Key. Can also be configured on the TwitterComponent level instead.

consumerSecret

null

Consumer Secret. Can also be configured on the TwitterComponent level instead.

accessToken

null

Access Token. Can also be configured on the TwitterComponent level instead.

accessTokenSecret

null

Access Token Secret. Can also be configured on the TwitterComponent level instead.

user

null

Username, used for user timeline consumption, direct message production, etc.

locations

null

'lat,lon;lat,lon;...' Bounding boxes, created by pairs of lat/lons. Can be used for streaming/filter

keywords

null

'foo1,foo2,foo3...' Can be used for search and streaming/filter. See Advanced search for keywords syntax for searching with for example OR.

userIds

null

'username,username...' Can be used for streaming/filter

filterOld

true

Filter out old tweets, that has previously been polled. This state is stored in memory only, and based on last tweet id. Since Camel 2.11.0 The search producer supports this option

sinceId

1

Camel 2.11.0: The last tweet id which will be used for pulling the tweets. It is useful when the camel route is restarted after a long running.

lang

null

Camel 2.11.0: The lang string ISO_639-1 which will be used for searching

count

null

Camel 2.11.0: Limiting number of results per page.

numberOfPages

1

Camel 2.11.0: The number of pages result which you want camel-twitter to consume.

httpProxyHost

null

Camel 2.12.3: The http proxy host which can be used for the camel-twitter.

httpProxyPort

null

Camel 2.12.3: The http proxy port which can be used for the camel-twitter.

httpProxyUser

null

Camel 2.12.3: The http proxy user which can be used for the camel-twitter.

httpProxyPassword

null

Camel 2.12.3: The http proxy password which can be used for the camel-twitter.

latitude Camel 2.16: Used by the non-stream geography search to search by latitude. You need to configure all the following options: longitude, latitude, radius, and distanceMetric.
longitude Camel 2.16: Used by the non-stream geography search to search by longitude. You need to configure all the following options: longitude, latitude, radius, and distanceMetric.
radius Camel 2.16: Used by the non-stream geography search to search by radius. You need to configure all the following options: longitude, latitude, radius, and distanceMetric.
distanceMetrickmCamel 2.16: Used by the non-stream geography search, to search by radius using the configured metrics. The unit can either be mi for miles, or km for kilometers. You need to configure all the following options: longitude, latitude, radius, and distanceMetric.

Message header

Name

Description

CamelTwitterKeywords

This header is used by the search producer to change the search key words dynamically.

CamelTwitterSearchLanguage

Camel 2.11.0: This header can override the option of lang which set the search language for the search endpoint dynamically

CamelTwitterCount

Camel 2.11.0 This header can override the option of count which sets the max twitters that will be returned.

CamelTwitterNumberOfPages

Camel 2.11.0 This header can converrid the option of numberOfPages which sets how many pages we want to twitter returns.

CamelTwitterEventCamel 2.17.0 The type of event received (see org.apache.camel.component.twitter.consumer.TwitterEventType)
CamelTwitterUser1..NCamel 2.17.0 Identify a party
CamelTwitterUserRole1..NCamel 2.17.0 Identify a party role

Message body

All message bodies utilize objects provided by the Twitter4J API.

Use cases

API Rate Limits

Twitter REST APIs encapsulated by Twitter4J are subjected to API Rate Limiting. You can find the per method limits in the API Rate Limits documentation. Note that endpoints/resources not listed in that page are default to 15 requests per allotted user per window.

To create a status update within your Twitter profile, send this producer a String body.

from("direct:foo")
  .to("twitter://timeline/user?consumerKey=[s]&consumerSecret=[s]&accessToken=[s]&accessTokenSecret=[s]);

To poll, every 60 sec., all statuses on your home timeline:

from("twitter://timeline/home?type=polling&delay=60&consumerKey=[s]&consumerSecret=[s]&accessToken=[s]&accessTokenSecret=[s]")
  .to("bean:blah");

To search for all statuses with the keyword 'camel':

from("twitter://search?type=direct&keywords=camel&consumerKey=[s]&consumerSecret=[s]&accessToken=[s]&accessTokenSecret=[s]")
  .to("bean:blah");

Searching using a producer with static keywords

from("direct:foo")
  .to("twitter://search?keywords=camel&consumerKey=[s]&consumerSecret=[s]&accessToken=[s]&accessTokenSecret=[s]");

Searching using a producer with dynamic keywords from header

In the bar header we have the keywords we want to search, so we can assign this value to the CamelTwitterKeywords header.

from("direct:foo")
  .setHeader("CamelTwitterKeywords", header("bar"))
  .to("twitter://search?consumerKey=[s]&consumerSecret=[s]&accessToken=[s]&accessTokenSecret=[s]");

Example

See also the Twitter Websocket Example.

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