GitHub
Since Camel 2.15
Both producer and consumer are supported
The GitHub component interacts with the GitHub API by encapsulating egit-github. It currently provides polling for new pull requests, pull request comments, tags, and commits. It is also able to produce comments on pull requests, as well as close the pull request entirely.
Rather than webhooks, this endpoint relies on simple polling. Reasons include:
-
Concern for reliability/stability
-
The types of payloads we’re polling aren’t typically large (plus, paging is available in the API)
-
The need to support apps running somewhere not publicly accessible where a webhook would fail
Note that the GitHub API is fairly expansive. Therefore, this component could be easily expanded to provide additional interactions.
Maven users will need to add the following dependency to their pom.xml for this component:
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-github</artifactId>
<version>${camel-version}</version>
</dependency>Mandatory Options:
Note that these can be configured directly through the endpoint.
The GitHub component supports 3 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 |
basicPropertyBinding (advanced) |
Whether the component should use basic property binding (Camel 2.x) or the newer property binding with additional capabilities |
false |
boolean |
The GitHub endpoint is configured using URI syntax:
github:type/branchName
with the following path and query parameters:
Path Parameters (2 parameters):
| Name | Description | Default | Type |
|---|---|---|---|
type |
Required What git operation to execute. The value can be one of: CLOSEPULLREQUEST, PULLREQUESTCOMMENT, COMMIT, PULLREQUEST, TAG, PULLREQUESTSTATE, PULLREQUESTFILES, GETCOMMITFILE, CREATEISSUE |
GitHubType |
|
branchName |
Name of branch |
String |
Query Parameters (14 parameters):
| Name | Description | Default | Type |
|---|---|---|---|
oauthToken (common) |
GitHub OAuth token, required unless username & password are provided |
String |
|
password (common) |
GitHub password, required unless oauthToken is provided |
String |
|
repoName (common) |
Required GitHub repository name |
String |
|
repoOwner (common) |
Required GitHub repository owner (organization) |
String |
|
username (common) |
GitHub username, required unless oauthToken is provided |
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 |
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. The value can be one of: InOnly, InOut, InOptionalOut |
ExchangePattern |
|
encoding (producer) |
To use the given encoding when getting a git commit file |
String |
|
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 |
state (producer) |
To set git commit status state. The value can be one of: error, failure, pending, success |
String |
|
targetUrl (producer) |
To set git commit status target url |
String |
|
basicPropertyBinding (advanced) |
Whether the endpoint should use basic property binding (Camel 2.x) or the newer property binding with additional capabilities |
false |
boolean |
synchronous (advanced) |
Sets whether synchronous processing should be strictly used, or Camel is allowed to use asynchronous processing (if supported). |
false |
boolean |
Consumer Endpoints:
| Endpoint | Context | Body Type |
|---|---|---|
pullRequest |
polling |
org.eclipse.egit.github.core.PullRequest |
pullRequestComment |
polling |
org.eclipse.egit.github.core.Comment (comment on the general pull request discussion) or org.eclipse.egit.github.core.CommitComment (inline comment on a pull request diff) |
tag |
polling |
org.eclipse.egit.github.core.RepositoryTag |
commit |
polling |
org.eclipse.egit.github.core.RepositoryCommit |
Producer Endpoints:
| Endpoint | Body | Message Headers |
|---|---|---|
pullRequestComment |
String (comment text) |
- GitHubPullRequest (integer) (REQUIRED): Pull request number. - GitHubInResponseTo (integer): Required if responding to another inline comment on the pull request diff. If left off, a general comment on the pull request discussion is assumed. |
closePullRequest |
none |
- GitHubPullRequest (integer) (REQUIRED): Pull request number. |
createIssue |
String (issue body text) |
- GitHubIssueTitle (String) (REQUIRED): Issue Title. |
Spring Boot Auto-Configuration
When using github 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-github-starter</artifactId>
<version>x.x.x</version>
<!-- use the same version as your Camel core version -->
</dependency>The component supports 4 options, which are listed below.
| Name | Description | Default | Type |
|---|---|---|---|
camel.component.github.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.github.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.github.enabled |
Whether to enable auto configuration of the github component. This is enabled by default. |
Boolean |
|
camel.component.github.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 |