Chapter 97. etcd Component Available as of Camel version 2.18 The camel etcd component allows you to work with Etcd, a distributed reliable key-value store. 97.1. URI Format etcd:namespace/path[?options] 97.2. URI Options The etcd component supports 7 options, which are listed below. Name Description Default Type uris (common) To set the URIs the client connects. String sslContextParameters (common) To configure security using SSLContextParameters. SSLContextParameters userName (common) The user name to use for basic authentication. String password (common) The password to use for basic authentication. String configuration (advanced) Sets the common configuration shared among endpoints EtcdConfiguration useGlobalSslContext Parameters (security) Enable usage of global SSL context parameters. false boolean resolveProperty Placeholders (advanced) Whether the component should resolve property placeholders on itself when starting. Only properties which are of String type can use property placeholders. true boolean The etcd endpoint is configured using URI syntax: with the following path and query parameters: 97.2.1. Path Parameters (2 parameters): Name Description Default Type namespace Required The API namespace to use EtcdNamespace path The path the endpoint refers to String 97.2.2. Query Parameters (29 parameters): Name Description Default Type recursive (common) To apply an action recursively. false boolean servicePath (common) The path to look for for service discovery /services/ String timeout (common) To set the maximum time an action could take to complete. Long uris (common) To set the URIs the client connects. http://localhost:2379,http://localhost:4001 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 sendEmptyExchangeOnTimeout (consumer) To send an empty message in case of timeout watching for a key. 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 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) Sets the exchange pattern when the consumer creates an exchange. ExchangePattern fromIndex (consumer) The index to watch from 0 Long 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 timeToLive (producer) To set the lifespan of a key in milliseconds. Integer 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 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 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 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 password (security) The password to use for basic authentication. String sslContextParameters (security) To configure security using SSLContextParameters. SSLContextParameters userName (security) The user name to use for basic authentication. String 97.3. Spring Boot Auto-Configuration The component supports 17 options, which are listed below. Name Description Default Type camel.component.etcd.configuration.from-index The index to watch from 0 Long camel.component.etcd.configuration.password The password to use for basic authentication. String camel.component.etcd.configuration.recursive To apply an action recursively. false Boolean camel.component.etcd.configuration.send-empty-exchange-on-timeout To send an empty message in case of timeout watching for a key. false Boolean camel.component.etcd.configuration.service-path The path to look for for service discovery /services/ String camel.component.etcd.configuration.ssl-context-parameters To configure security using SSLContextParameters. SSLContextParameters camel.component.etcd.configuration.time-to-live To set the lifespan of a key in milliseconds. Integer camel.component.etcd.configuration.timeout To set the maximum time an action could take to complete. Long camel.component.etcd.configuration.uris To set the URIs the client connects. http://localhost:2379,http://localhost:4001 String camel.component.etcd.configuration.user-name The user name to use for basic authentication. String camel.component.etcd.enabled Enable etcd component true Boolean camel.component.etcd.password The password to use for basic authentication. String camel.component.etcd.resolve-property-placeholders Whether the component should resolve property placeholders on itself when starting. Only properties which are of String type can use property placeholders. true Boolean camel.component.etcd.ssl-context-parameters To configure security using SSLContextParameters. The option is a org.apache.camel.util.jsse.SSLContextParameters type. String camel.component.etcd.uris To set the URIs the client connects. String camel.component.etcd.use-global-ssl-context-parameters Enable usage of global SSL context parameters. false Boolean camel.component.etcd.user-name The user name to use for basic authentication. String

Commands:
etcd:namespace/path[?options]
etcd:namespace/path