esp-idf/.gitlab/ci

IDF CI

• IDF CI
  • General Workflow
  • What if Expected Jobs ARE NOT Created?
  • MR labels for additional jobs
  • Supported MR Labels
  • How to trigger a detached pipeline without pushing new commits?
  • How to Develop With rules.yml?
  • General Concepts
  • How to Add a New Job?
  • How to Add a New Rules Template?
  • How to Add a New if Anchor?
  • Naming Rules
    • Common Naming Rules
    • if Anchors Naming Rules
    • rules Template Naming Rules
  • Reusable Shell Script tools/ci/utils.sh
  • Functions
    • CI Job Related
    • Shell Script Related
  • Manifest File to Control the Build/Test apps
  • Grammar
    • Operands
    • Operators
    • Limitation:
  • How does it work?
  • Example

General Workflow

1. Push to a remote branch
2. Create an MR, choose related labels (not required)
3. A detached pipeline will be created.
4. if you push a new commit, a new pipeline will be created automatically.

What if Expected Jobs ARE NOT Created?

1. check the file patterns

If you found a job that is not running as expected with some file changes, a git commit to improve the pattern will be appreciated.

1. please add MR labels to run additional tests, currently we have to do this only for target-test jobs, please use it as few as possible. Our final goal is to remove all the labels and let the file changes decide everything!

MR labels for additional jobs

Supported MR Labels

• build
• build_docs
• component_ut[_esp32/esp32s2/...]
• custom_test[_esp32/esp32s2/...]
• docker
• docs
• docs_fast, triggers a fast docs build, not a full build which is the CI default. This skips PDF build as well as doxygen APIs, reducing the build time by 90+%.
• example_test[_esp32/esp32s2/...]
• fuzzer_test
• host_test
• integration_test
• iperf_stress_test
• macos
• macos_test
• nvs_coverage
• submodule
• unit_test[_esp32/esp32s2/...]
• weekend_test
• windows

There are two general labels (not recommended since these two labels will trigger a lot of jobs)

• target_test: includes all target for example_test, custom_test, component_ut, unit_test, integration_test
• all_test: includes all test labels

How to trigger a detached pipeline without pushing new commits?

Go to MR web page -> Pipelines tab -> click Run pipeline button.

In very rare case, this tab will not show up because no merge_request pipeline is created before. Please use web API then.

curl -X POST --header "PRIVATE-TOKEN: [YOUR PERSONAL ACCESS TOKEN]" [GITLAB_SERVER]/api/v4/projects/103/merge_requests/[MERGE_REQUEST_IID]/pipelines

How to Develop With rules.yml?

General Concepts

• pattern: Defined in an array. A GitLab job will be created if the changed files in this MR matched one of the patterns. For example:

  .patterns-python-files: &patterns-python-files
    - "**/*.py"
  

• label: Defined in an if clause, similar as the previous bot command. A GitLab job will be created if the pipeline variables contains variables in BOT_LABEL_xxx format (DEPRECATED) or included in the MR labels. For example:

  .if-label-build_docs: &if-label-build_docs
    if: '$BOT_LABEL_BUILD_DOCS || $CI_MERGE_REQUEST_LABELS =~ /^(?:[^,\n\r]+,)*build_docs(?:,[^,\n\r]+)*$/i'
  

• rule: A combination of various patterns, and labels. It will be used by GitLab YAML extends keyword to tell GitLab in what conditions will this job be created. For example:

  .rules:build:docs:
    rules:
      - <<: *if-protected
      - <<: *if-label-build_docs
      - <<: *if-label-docs
      - <<: *if-dev-push
        changes: *patterns-docs
  

An example for GitLab job on how to use extends:

```yaml
check_docs_lang_sync:
  extends:
    - .pre_check_template
    - .rules:build:docs
  script:
    - cd docs
    - ./check_lang_folder_sync.sh
```

How to Add a New Job?

check if there's a suitable .rules:<rules-you-need> template

1. if there is, put this in the job extends. All done, now you can close this window. (extends could be array or string)
2. if there isn't
   1. check How to Add a New Rules Template?, create a suitable one
   2. follow step 1

How to Add a New Rules Template?

check if this rule is related to labels, patterns

1. if it is, please refer to dependencies/README.md and add new rules by auto-generating
2. if it isn't, please continue reading

check if there's a suitable .if-<if-anchor-you-need> anchor

1. if there is, create a rule following rules Template Naming Rules.For detail information, please refer to GitLab Documentation rules-if. Here's an example.

   .rules:dev:
     rules:
       - <<: *if-trigger
       - <<: *if-dev-push
   

2. if there isn't

   1. check How to Add a New if Anchor?, create a suitable one
   2. follow step 1

How to Add a New if Anchor?

Create an if anchor following if Anchors Naming Rules. For detailed information about how to write the condition clause, please refer to GitLab Documentation `only/except (advanced). Here's an example.

.if-schedule: &if-schedule:
  if: '$CI_PIPELINE_SOURCE == "schedule"'

Naming Rules

Common Naming Rules

if a phrase has multi words, use _ to concatenate them.

e.g. regular_test

if a name has multi phrases, use - to concatenate them.

e.g. regular_test-example_test

if Anchors Naming Rules

• if it's a label: .if-label-<label_name>
• if it's a ref: .if-ref-<ref_name>
• if it's a branch: .if-branch-<branch_name>
• if it's a tag: .if-tag-<tag_name>
• if it's multi-type combination: .if-ref-<release_name>-branch-<branch_name>

Common Phrases/Abbreviations

- `no_label`

  `$BOT_TRIGGER_WITH_LABEL == null`

- `protected`

  `($CI_COMMIT_REF_NAME == "master" || $CI_COMMIT_BRANCH =~ /^release\/v/ || $CI_COMMIT_TAG =~ /^v\d+\.\d+(\.\d+)?($|-)/)`

- `target_test`

  a combination of `example_test`, `custom_test`, `unit_test`, `component_ut`, `integration_test` and all targets

rules Template Naming Rules

• if it's tag related: .rules:tag:<tag_1>-<tag_2>
• if it's label related: .rules:labels:<label_1>-<label_2>
• if it's test related: .rules:test:<test_type>
• if it's build related: .rules:build:<build_type>
• if it's pattern related: .rules:patterns:<patterns>

Reusable Shell Script tools/ci/utils.sh

It is used to put all the reusable shell scripts as small functions. If you want to set before_script: [] for you job, now you can set extends: .before_script_slim instead. it will only run source tools/ci/utils.sh

If you're developing CI shell scripts, you can use these functions without source them. They're already included in all before_script

To run these commands in shell script locally, place source tools/ci/utils.sh at the very beginning.

Functions

CI Job Related

• add_gitlab_ssh_keys
• add_github_ssh_keys
• add_doc_server_ssh_keys
• fetch_submodules
• get_all_submodules

Shell Script Related

• error: log in red color
• warning: log in orange color
• info: log in green color
• run_cmd: run the command with duration seconds info
• retry_failed: run the command with duration seconds info, retry when failed

Manifest File to Control the Build/Test apps

.build-test-rules.yml file is a manifest file to control if the CI is running the build and test job or not. The Supported Targets table in README.md for apps would be auto-generated by pre-commit from the app's .build-test-rules.yml.

Grammar

Operands

• Variables start with SOC_. The value would be parsed from components/soc/[TARGET]/include/soc/*_caps.h
• IDF_TARGET
• INCLUDE_DEFAULT (The default value of officially supported targets is 1, otherwise is 0)
• String, must be double-quoted. e.g. "esp32", "12345"
• Integer, support decimal and hex. e.g. 1, 0xAB
• List with String and Integer inside, the type could be mixed. e.g. ["esp32", 1]

Operators

• ==, !=, >, >=, <, <=
• and, or
• in, not in with list
• parentheses

Limitation:

• all operators are binary operator. For more than two operands, you may use nested parentheses trick. For example,
  • A == 1 or (B == 2 and C in [1,2,3])
  • (A == 1 and B == 2) or (C not in ["3", "4", 5])

How does it work?

By default, we enable build and test jobs for supported targets. In other words, if an app supports all supported targets, it does not need to be added in a manifest file. The manifest files are files that set the violation rules for apps.

three rules (disable rules are calculated after the enable rule):

• enable: run CI build/test jobs for targets that match any of the specified conditions only
• disable: will not run CI build/test jobs for targets that match any of the specified conditions
• disable_test: will not run CI test jobs for targets that match any of the specified conditions

Each key is a test folder. Will apply to all folders inside.

If one sub folder is in a special case, you can overwrite the rules for this folder by adding another entry for this folder itself. Each folder's rules are standalone, and will not inherit its parent's rules. (YAML inheritance is too complicated for reading)

For example in the following codeblock, only disable rule exists in examples/foo/bar. It's unaware of its parent's enable rule.

examples/foo:
  enable:
    - if: IDF_TARGET == "esp32"

examples/foo/bar:
  disable:
    - if: IDF_TARGET == "esp32s2"

Example

examples/foo:
  enable:
    - if IDF_TARGET in ["esp32", 1, 2, 3]
    - if IDF_TARGET not in ["4", "5", 6]
  # should be run under all targets!

examples/bluetooth:
  disable:  # disable both build and tests jobs
    - if: SOC_BT_SUPPORTED != 1
    # reason is optional if there's no `temporary: true`
  disable_test:
    - if: IDF_TARGET == "esp32"
      temporary: true
      reason: lack of ci runners  # required when `temporary: true`

examples/bluetooth/test_foo:
  # each folder's settings are standalone
  disable:
    - if: IDF_TARGET == "esp32s2"
      temporary: true
      reason: no idea
  # unlike examples/bluetooth, the apps under this folder would not be build nor test for "no idea" under target esp32s2

examples/get-started/hello_world:
  enable:
    - if: IDF_TARGET == "linux"
      reason: this one only supports linux!

examples/get-started/blink:
  enable:
    - if: INCLUDE_DEFAULT == 1 or IDF_TARGET == "linux"
      reason: This one supports all supported targets and linux