esp-idf/.gitlab/ci/README.md

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# IDF CI
- [IDF CI](#idf-ci)
- [General Workflow](#general-workflow)
- [What if Expected Jobs ARE NOT Created?](#what-if-expected-jobs-are-not-created)
- [MR labels for additional jobs](#mr-labels-for-additional-jobs)
- [Supported MR Labels](#supported-mr-labels)
- [How to trigger a `detached` pipeline without pushing new commits?](#how-to-trigger-a-detached-pipeline-without-pushing-new-commits)
- [How to Develop With `rules.yml`?](#how-to-develop-with-rulesyml)
- [General Concepts](#general-concepts)
- [How to Add a New `Job`?](#how-to-add-a-new-job)
- [How to Add a New `Rules` Template?](#how-to-add-a-new-rules-template)
- [How to Add a New `if` Anchor?](#how-to-add-a-new-if-anchor)
- [Naming Rules](#naming-rules)
- [Common Naming Rules](#common-naming-rules)
- [`if` Anchors Naming Rules](#if-anchors-naming-rules)
- [`rules` Template Naming Rules](#rules-template-naming-rules)
- [Reusable Shell Script `tools/ci/utils.sh`](#reusable-shell-script-toolsciutilssh)
- [Functions](#functions)
- [CI Job Related](#ci-job-related)
- [Shell Script Related](#shell-script-related)
- [Manifest File to Control the Build/Test apps](#manifest-file-to-control-the-buildtest-apps)
- [Grammar](#grammar)
- [Special Rules](#special-rules)
- [Upload/Download Artifacts to Internal Minio Server](#uploaddownload-artifacts-to-internal-minio-server)
- [Users Without Access to Minio](#users-without-access-to-minio)
- [Users With Access to Minio](#users-with-access-to-minio)
- [Env Vars for Minio](#env-vars-for-minio)
- [Artifacts Types and File Patterns](#artifacts-types-and-file-patterns)
- [Upload](#upload)
- [Download](#download)
## 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.
2. 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_full`, triggers a full docs build, regardless of files changed
- `example_test[_esp32/esp32s2/...]`
- `fuzzer_test`
- `host_test`
- `integration_test`
- `iperf_stress_test`
- `macos`
- `macos_test`
- `nvs_coverage`
- `submodule`
- `windows`
There are two general labels (not recommended since these two labels will trigger a lot of jobs)
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- `target_test`: includes all target for `example_test`, `custom_test`, `component_ut`, `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.
```shell
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:
```yaml
.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:
```yaml
.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:
```yaml
.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?](#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](./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](#rules-template-naming-rules).For detail information, please refer to [GitLab Documentation `rules-if`](https://docs.gitlab.com/ee/ci/yaml/README.html#rulesif). Here's an example.
```yaml
.rules:patterns:python-files:
rules:
- <<: *if-protected
- <<: *if-dev-push
changes: *patterns-python-files
```
2. if there isn't
1. check [How to Add a New `if` Anchor?](#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](#if-anchors-naming-rules). For detailed information about how to write the condition clause, please refer to [GitLab Documentation `only/except (advanced)](https://docs.gitlab.com/ee/ci/yaml/README.html#onlyexcept-advanced). Here's an example.
```yaml
.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`
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a combination of `example_test`, `custom_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
We're using the latest version of [idf-build-apps][idf-build-apps]. Please refer to their [documentation][manifest-doc]
[idf-build-apps]: https://github.com/espressif/idf-build-apps
[manifest-doc]: https://docs.espressif.com/projects/idf-build-apps/en/latest/manifest.html
### Special Rules
In ESP-IDF CI, there's a few more special rules are additionally supported to disable the check app dependencies feature:
- Add MR labels `BUILD_AND_TEST_ALL_APPS`
- Run in protected branches
## Upload/Download Artifacts to Internal Minio Server
### Users Without Access to Minio
If you don't have access to the internal Minio server, you can still download the artifacts from the shared link in the job log.
The log will look like this:
```shell
Pipeline ID : 587355
Job name : build_clang_test_apps_esp32
Job ID : 40272275
Created archive file: 40272275.zip, uploading as 587355/build_dir_without_map_and_elf_files/build_clang_test_apps_esp32/40272275.zip
Please download the archive file includes build_dir_without_map_and_elf_files from [INTERNAL_URL]
```
### Users With Access to Minio
#### Env Vars for Minio
Minio takes these env vars to connect to the server:
- `IDF_S3_SERVER`
- `IDF_S3_ACCESS_KEY`
- `IDF_S3_SECRET_KEY`
- `IDF_S3_BUCKET`
#### Artifacts Types and File Patterns
The artifacts types and corresponding file patterns are defined in tools/ci/artifacts_handler.py, inside `ArtifactType` and `TYPE_PATTERNS_DICT`.
#### Upload
```shell
python tools/ci/artifacts_handler.py upload
```
will upload the files that match the file patterns to minio object storage with name:
`<pipeline_id>/<artifact_type>/<job_name>/<job_id>.zip`
For example, job 39043328 will upload these four files:
- `575500/map_and_elf_files/build_pytest_examples_esp32/39043328.zip`
- `575500/build_dir_without_map_and_elf_files/build_pytest_examples_esp32/39043328.zip`
- `575500/logs/build_pytest_examples_esp32/39043328.zip`
- `575500/size_reports/build_pytest_examples_esp32/39043328.zip`
#### Download
You may run
```shell
python tools/ci/artifacts_handler.py download --pipeline_id <pipeline_id>
```
to download all files of the pipeline, or
```shell
python tools/ci/artifacts_handler.py download --pipeline_id <pipeline_id> --job_name <job_name_or_pattern>
```
to download all files with the specified job name or pattern, or
```shell
python tools/ci/artifacts_handler.py download --pipeline_id <pipeline_id> --job_name <job_name_or_pattern> --type <artifact_type> <artifact_type> ...
```
to download all files with the specified job name or pattern and artifact type(s).
You may check all detailed documentation with `python tools/ci/artifacts_handler.py download -h`