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author | Achilleas Pipinellis <axil@gitlab.com> | 2019-09-03 14:36:40 +0000 |
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committer | Achilleas Pipinellis <axil@gitlab.com> | 2019-09-03 14:36:40 +0000 |
commit | 8d687c511738a01ac094316f6f834ac26378699f (patch) | |
tree | e77fbc89c03b4fc8b09d4357b146a42499f36300 | |
parent | 72298390424f8364f0325452e4d5ec7b71e8f38f (diff) | |
parent | 1215b501d221a599d42fffbec502b19a04f8acff (diff) | |
download | gitlab-ce-8d687c511738a01ac094316f6f834ac26378699f.tar.gz |
Merge branch 'docs/edit-rules-docs' into 'master'
Edit to new rules documentation
See merge request gitlab-org/gitlab-ce!32244
-rw-r--r-- | doc/ci/yaml/README.md | 92 |
1 files changed, 59 insertions, 33 deletions
diff --git a/doc/ci/yaml/README.md b/doc/ci/yaml/README.md index 4cfa3547267..bfba21646b5 100644 --- a/doc/ci/yaml/README.md +++ b/doc/ci/yaml/README.md @@ -100,7 +100,7 @@ The following table lists available parameters for jobs: | [`stage`](#stage) | Defines a job stage (default: `test`). | | [`only`](#onlyexcept-basic) | Limit when jobs are created. Also available: [`only:refs`, `only:kubernetes`, `only:variables`, and `only:changes`](#onlyexcept-advanced). | | [`except`](#onlyexcept-basic) | Limit when jobs are not created. Also available: [`except:refs`, `except:kubernetes`, `except:variables`, and `except:changes`](#onlyexcept-advanced). | -| [`rules`](#rules) | List of conditions to evaluate and determine selected attributes of a build and whether or not it is created. May not be used alongside `only`/`except`. +| [`rules`](#rules) | List of conditions to evaluate and determine selected attributes of a job, and whether or not it is created. May not be used alongside `only`/`except`. | | [`tags`](#tags) | List of tags which are used to select Runner. | | [`allow_failure`](#allow_failure) | Allow job to fail. Failed job doesn't contribute to commit status. | | [`when`](#when) | When to run job. Also available: `when:manual` and `when:delayed`. | @@ -113,7 +113,7 @@ The following table lists available parameters for jobs: | [`parallel`](#parallel) | How many instances of a job should be run in parallel. | | [`trigger`](#trigger-premium) | Defines a downstream pipeline trigger. | | [`include`](#include) | Allows this job to include external YAML files. Also available: `include:local`, `include:file`, `include:template`, and `include:remote`. | -| [`extends`](#extends) | Configuration entries that this job is going to inherit from. | +| [`extends`](#extends) | Configuration entries that this job is going to inherit from. | | [`pages`](#pages) | Upload the result of a job to use with GitLab Pages. | | [`variables`](#variables) | Define job variables on a job level. | @@ -693,31 +693,41 @@ and triggers the `docker build service one` job. ### `rules` -Using `rules` allows for a list of individual rule objects to be evaluated +> [Introduced](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/29011) in GitLab 12.3. + +`rules` allows for a list of individual rule objects to be evaluated *in order*, until one matches and dynamically provides attributes to the job. Available rule clauses include: -- `if` (similar to [`only:variables`](#onlyvariablesexceptvariables)). -- `changes` (same as [`only:changes`](#onlychangesexceptchanges)). +- [`if`](#rulesif) + (similar to [`only:variables`](#onlyvariablesexceptvariables)). +- [`changes`](#ruleschanges) + (same as [`only:changes`](#onlychangesexceptchanges)). -For example, using `if`: +For example, using `if`. This configuration specifies that `job` should be built +and run for every pipeline on merge requests targeting `master`, regardless of +the status of other builds: ```yaml job: script: "echo Hello, Rules!" rules: - - if: '$CI_MERGE_REQUEST_TARGET_BRANCH == "master"' # This rule will be evaluated + - if: '$CI_MERGE_REQUEST_TARGET_BRANCH == "master"' when: always - - if: '$VAR =~ /pattern/' # This rule will only be evaluated if the first does not match + - if: '$VAR =~ /pattern/' when: manual - - when: on_success # A Rule entry with no conditional clauses evaluates to true. If neither of the first two Rules match, this one will and set job:when to "on_success" + - when: on_success ``` -If the first rule does not match, further rules will be evaluated sequentially -until a match is found. The above configuration will specify that `job` should -be built and run for every pipeline on merge requests targeting `master`, -regardless of the status of other builds. +In this example, if the first rule: + +- Matches, the job will be given the `when:always` attribute. +- Does not match, the second and third rules will be evaluated sequentially + until a match is found. That is, the job will be given either the: + - `when: manual` attribute if the second rule matches. + - `when: on_success` attribute if the second rule does not match. The third + rule will always match when reached because it has no conditional clauses. #### `rules:if` @@ -744,10 +754,9 @@ at all, the behavior defaults to `job:when`, which continues to default to #### `rules:changes` `changes` works exactly the same way as [`only`/`except`](#onlychangesexceptchanges), -accepting an array of paths. The following configuration configures a job to be -run manually if `Dockerfile` has changed OR `$VAR == "string value"`. Otherwise -it is set to `when:on_success` by the last rule, where 0 clauses evaluate as -vacuously true. +accepting an array of paths. + +For example: ```yaml docker build: @@ -762,12 +771,20 @@ docker build: ``` -#### Complex Rule Clauses +In this example, a job either set to: + +- Run manually if `Dockerfile` has changed OR `$VAR == "string value"`. +- `when:on_success` by the last rule, where no earlier clauses evaluate to true. + +#### Complex rule clauses To conjoin `if` and `changes` clauses with an AND, use them in the same rule. -Here we run the job manually if `Dockerfile` or any file in `docker/scripts/` -has changed AND `$VAR == "string value"`. Otherwise, the job will not be -included in the pipeline. + +In the following example: + +- We run the job manually if `Dockerfile` or any file in `docker/scripts/` + has changed AND `$VAR == "string value"`. +- Otherwise, the job will not be included in the pipeline. ```yaml docker build: @@ -781,18 +798,27 @@ docker build: # - when: never would be redundant here, this is implied any time rules are listed. ``` -The only clauses currently available are `if` and `changes`. Keywords such as -`branches` or `refs` that are currently available for `only`/`except` are not -yet available in `rules` as they are being individually considered for their -usage and behavior in the newer context. +The only clauses currently available are: + +- `if` +- `changes` + +Keywords such as `branches` or `refs` that are currently available for +`only`/`except` are not yet available in `rules` as they are being individually +considered for their usage and behavior in this context. #### Permitted attributes -The only job attributes currently set by `rules` are `when` and `start_in`, if -`when` is set to `delayed`. A job will be included in a pipeline if `when` is -evaluated to any value except `never`. +The only job attributes currently set by `rules` are: + +- `when`. +- `start_in`, if `when` is set to `delayed`. + +A job will be included in a pipeline if `when` is evaluated to any value +except `never`. -Delayed jobs require a `start_in` value, so rule objects do as well. For example: +Delayed jobs require a `start_in` value, so rule objects do as well. For +example: ```yaml docker build: @@ -806,9 +832,9 @@ docker build: ``` -Additional Job configuration may be added to rules in the future, if something -useful isn't available, please open an issue on -[Gitlab CE](https://www.gitlab.com/gitlab-org/gitlab-ce/issues). +Additional job configuration may be added to rules in the future. If something +useful isn't available, please +[open an issue](https://www.gitlab.com/gitlab-org/gitlab-ce/issues). ### `tags` @@ -1801,7 +1827,7 @@ and bring back the old behavior. ### `needs` -> - Introduced in GitLab 12.2. +> - [Introduced](https://gitlab.com/gitlab-org/gitlab-ce/issues/47063) in GitLab 12.2. > - In GitLab 12.3, maximum number of jobs in `needs` array raised from five to 50. The `needs:` keyword enables executing jobs out-of-order, allowing you to implement |