Twitter Timeline

Since Camel 2.10

Both producer and consumer are supported

The Twitter Timeline component consumes twitter timeline or update the status of specific user. The timelineType can be one of: public, home, user, mentions or retweetsofme.

Configuring Options

Camel components are configured on two separate levels:

  • component level

  • endpoint level

Configuring Component Options

The component level is the highest level which holds general and common configurations that are inherited by the endpoints. For example a component may have security settings, credentials for authentication, urls for network connection and so forth.

Some components only have a few options, and others may have many. Because components typically have pre configured defaults that are commonly used, then you may often only need to configure a few options on a component; or none at all.

Configuring components can be done with the Component DSL, in a configuration file (application.properties|yaml), or directly with Java code.

Configuring Endpoint Options

Where you find yourself configuring the most is on endpoints, as endpoints often have many options, which allows you to configure what you need the endpoint to do. The options are also categorized into whether the endpoint is used as consumer (from) or as a producer (to), or used for both.

Configuring endpoints is most often done directly in the endpoint URI as path and query parameters. You can also use the Endpoint DSL as a type safe way of configuring endpoints.

A good practice when configuring options is to use Property Placeholders, which allows to not hardcode urls, port numbers, sensitive information, and other settings. In other words placeholders allows to externalize the configuration from your code, and gives more flexibility and reuse.

The following two sections lists all the options, firstly for the component followed by the endpoint.

Component Options

The Twitter Timeline component supports 11 options, which are listed below.

Name Description Default Type

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

lazyStartProducer (producer)

Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel’s routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing.

false

boolean

autowiredEnabled (advanced)

Whether autowiring is enabled. This is used for automatic autowiring options (the option must be marked as autowired) by looking up in the registry to find if there is a single instance of matching type, which then gets configured on the component. This can be used for automatic configuring JDBC data sources, JMS connection factories, AWS Clients, etc.

true

boolean

httpProxyHost (proxy)

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

String

httpProxyPassword (proxy)

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

String

httpProxyPort (proxy)

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

int

httpProxyUser (proxy)

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

String

accessToken (security)

The access token.

String

accessTokenSecret (security)

The access token secret.

String

consumerKey (security)

The consumer key.

String

consumerSecret (security)

The consumer secret.

String

Endpoint Options

The Twitter Timeline endpoint is configured using URI syntax:

twitter-timeline:timelineType

with the following path and query parameters:

Path Parameters (1 parameters)

Name Description Default Type

timelineType (common)

Required The timeline type to produce/consume.

Enum values:

  • PUBLIC

  • HOME

  • USER

  • MENTIONS

  • RETWEETSOFME

  • LIST

  • UNKNOWN

TimelineType

Query Parameters (44 parameters)

Name Description Default Type

list (common)

The list name when using timelineType=list.

String

user (common)

The username when using timelineType=user.

String

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

type (consumer)

Endpoint type to use.

Enum values:

  • polling

  • direct

polling

EndpointType

distanceMetric (consumer (advanced))

Used by the 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.

Enum values:

  • km

  • mi

km

String

exceptionHandler (consumer (advanced))

To let the consumer use a custom ExceptionHandler. Notice if the option bridgeErrorHandler is enabled then this option 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 (advanced))

Sets the exchange pattern when the consumer creates an exchange.

Enum values:

  • InOnly

  • InOut

  • InOptionalOut

ExchangePattern

extendedMode (consumer (advanced))

Used for enabling full text from twitter (eg receive tweets that contains more than 140 characters).

true

boolean

latitude (consumer (advanced))

Used by the geography search to search by latitude. You need to configure all the following options: longitude, latitude, radius, and distanceMetric.

Double

locations (consumer (advanced))

Bounding boxes, created by pairs of lat/lons. Can be used for filter. A pair is defined as lat,lon. And multiple paris can be separated by semi colon.

String

longitude (consumer (advanced))

Used by the geography search to search by longitude. You need to configure all the following options: longitude, latitude, radius, and distanceMetric.

Double

pollStrategy (consumer (advanced))

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.

PollingConsumerPollStrategy

radius (consumer (advanced))

Used by the geography search to search by radius. You need to configure all the following options: longitude, latitude, radius, and distanceMetric.

Double

lazyStartProducer (producer)

Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel’s routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing.

false

boolean

count (filter)

Limiting number of results per page.

5

Integer

filterOld (filter)

Filter out old tweets, that has previously been polled. This state is stored in memory only, and based on last tweet id.

true

boolean

lang (filter)

The lang string ISO_639-1 which will be used for searching.

String

numberOfPages (filter)

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

1

Integer

sinceId (filter)

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.

1

long

userIds (filter)

To filter by user ids for filter. Multiple values can be separated by comma.

String

httpProxyHost (proxy)

The http proxy host which can be used for the camel-twitter. Can also be configured on the TwitterComponent level instead.

String

httpProxyPassword (proxy)

The http proxy password which can be used for the camel-twitter. Can also be configured on the TwitterComponent level instead.

String

httpProxyPort (proxy)

The http proxy port which can be used for the camel-twitter. Can also be configured on the TwitterComponent level instead.

Integer

httpProxyUser (proxy)

The http proxy user which can be used for the camel-twitter. Can also be configured on the TwitterComponent level instead.

String

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.

30000

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.

1000

long

repeatCount (scheduler)

Specifies a maximum limit of number of fires. So if you set it to 1, the scheduler will only fire once. If you set it to 5, it will only fire five times. A value of zero or negative means fire forever.

0

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.

Enum values:

  • TRACE

  • DEBUG

  • INFO

  • WARN

  • ERROR

  • OFF

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.

ScheduledExecutorService

scheduler (scheduler)

To use a cron scheduler from either camel-spring or camel-quartz component. Use value spring or quartz for built in scheduler.

none

Object

schedulerProperties (scheduler)

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

Map

startScheduler (scheduler)

Whether the scheduler should be auto started.

true

boolean

timeUnit (scheduler)

Time unit for initialDelay and delay options.

Enum values:

  • NANOSECONDS

  • MICROSECONDS

  • MILLISECONDS

  • SECONDS

  • MINUTES

  • HOURS

  • DAYS

MILLISECONDS

TimeUnit

useFixedDelay (scheduler)

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

true

boolean

accessToken (security)

The access token. Can also be configured on the TwitterComponent level instead.

String

accessTokenSecret (security)

The access secret. Can also be configured on the TwitterComponent level instead.

String

consumerKey (security)

The consumer key. Can also be configured on the TwitterComponent level instead.

String

consumerSecret (security)

The consumer secret. Can also be configured on the TwitterComponent level instead.

String

sortById (sort)

Sorts by id, so the oldest are first, and newest last.

true

boolean

Spring Boot Auto-Configuration

When using twitter-timeline with Spring Boot make sure to use the following Maven dependency to have support for auto configuration:

<dependency>
  <groupId>org.apache.camel.springboot</groupId>
  <artifactId>camel-twitter-starter</artifactId>
  <version>x.x.x</version>
  <!-- use the same version as your Camel core version -->
</dependency>

The component supports 36 options, which are listed below.

Name Description Default Type

camel.component.twitter-directmessage.access-token

The access token.

String

camel.component.twitter-directmessage.access-token-secret

The access token secret.

String

camel.component.twitter-directmessage.autowired-enabled

Whether autowiring is enabled. This is used for automatic autowiring options (the option must be marked as autowired) by looking up in the registry to find if there is a single instance of matching type, which then gets configured on the component. This can be used for automatic configuring JDBC data sources, JMS connection factories, AWS Clients, etc.

true

Boolean

camel.component.twitter-directmessage.bridge-error-handler

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

camel.component.twitter-directmessage.consumer-key

The consumer key.

String

camel.component.twitter-directmessage.consumer-secret

The consumer secret.

String

camel.component.twitter-directmessage.enabled

Whether to enable auto configuration of the twitter-directmessage component. This is enabled by default.

Boolean

camel.component.twitter-directmessage.http-proxy-host

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

String

camel.component.twitter-directmessage.http-proxy-password

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

String

camel.component.twitter-directmessage.http-proxy-port

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

Integer

camel.component.twitter-directmessage.http-proxy-user

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

String

camel.component.twitter-directmessage.lazy-start-producer

Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel’s routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing.

false

Boolean

camel.component.twitter-search.access-token

The access token.

String

camel.component.twitter-search.access-token-secret

The access token secret.

String

camel.component.twitter-search.autowired-enabled

Whether autowiring is enabled. This is used for automatic autowiring options (the option must be marked as autowired) by looking up in the registry to find if there is a single instance of matching type, which then gets configured on the component. This can be used for automatic configuring JDBC data sources, JMS connection factories, AWS Clients, etc.

true

Boolean

camel.component.twitter-search.bridge-error-handler

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

camel.component.twitter-search.consumer-key

The consumer key.

String

camel.component.twitter-search.consumer-secret

The consumer secret.

String

camel.component.twitter-search.enabled

Whether to enable auto configuration of the twitter-search component. This is enabled by default.

Boolean

camel.component.twitter-search.http-proxy-host

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

String

camel.component.twitter-search.http-proxy-password

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

String

camel.component.twitter-search.http-proxy-port

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

Integer

camel.component.twitter-search.http-proxy-user

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

String

camel.component.twitter-search.lazy-start-producer

Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel’s routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing.

false

Boolean

camel.component.twitter-timeline.access-token

The access token.

String

camel.component.twitter-timeline.access-token-secret

The access token secret.

String

camel.component.twitter-timeline.autowired-enabled

Whether autowiring is enabled. This is used for automatic autowiring options (the option must be marked as autowired) by looking up in the registry to find if there is a single instance of matching type, which then gets configured on the component. This can be used for automatic configuring JDBC data sources, JMS connection factories, AWS Clients, etc.

true

Boolean

camel.component.twitter-timeline.bridge-error-handler

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

camel.component.twitter-timeline.consumer-key

The consumer key.

String

camel.component.twitter-timeline.consumer-secret

The consumer secret.

String

camel.component.twitter-timeline.enabled

Whether to enable auto configuration of the twitter-timeline component. This is enabled by default.

Boolean

camel.component.twitter-timeline.http-proxy-host

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

String

camel.component.twitter-timeline.http-proxy-password

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

String

camel.component.twitter-timeline.http-proxy-port

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

Integer

camel.component.twitter-timeline.http-proxy-user

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

String

camel.component.twitter-timeline.lazy-start-producer

Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel’s routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing.

false

Boolean