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Version: v4

Syntax

A Reviewpad configuration file has the following shape:

mode: silent | verbose [OPTIONAL]
ignore-errors: true | false [OPTIONAL]
metrics-on-merge: true | false [OPTIONAL]

extends:
  - configuration_1
  - configuration_2
  ...
  - configuration_N

labels:
  label_1
  label_2
  ...
  label_N

groups:
  group_1
  group_2
  ...
  group_N

rules:
  rule_1
  rule_2
  ...
  rule_N

workflows:
  - workflow_1
  - workflow_2
  ...
  - workflow_N

pipelines:
  - pipeline_1
  - pipeline_2
  ...
  - pipeline_N
note

You can check the latest formal version of the format here.

Mode​

The mode property is a flag that allows you to enable or disable reports of Reviewpad as a pull request comment.

By default, Reviewpad runs on silent mode. However, you can choose to use verbose mode and Reviewpad will comment on the pull request with the execution results and,

Example​

mode: verbose # optional

Ignore errors​

The ignore-errors property is a boolean flag that allows you to specify if the Reviewpad should ignore execution errors.

By default, this flag is false which means that Reviewpad will fail if an error is raised.

Example​

ignore-errors: true # optional

Metrics on merge​

The metrics-on-merge property is a boolean flag that allows you to specify if the Reviewpad should add a metrics report when the pull request is merged.

By default, this flag is false which means that Reviewpad will not add this report.

This report is only added if Reviewpad reacts to the closed event on a pull request.

The metrics report includes the following metrics:

  • Coding Time: the time it took from the first commit until the pull request was issued;
  • Pickup Time: the time since the pull request was issued until its first review;
  • Review Time: the time from the first review until the pull request was merged.

Reviewpad metrics report

Example​

metrics-on-merge: true

Extends​

The extends property allows users to extend other Reviewpad configurations represented as GitHub blob urls (e.g. https://github.com/reviewpad/reviewpad/blob/main/reviewpad.yml).

An example:

If the URL is not a GitHub blob, Reviewpad will return an error.

The exact semantics of the extends mechanism is described on this page.

Label​

A label specifies a label that can be used as an argument to the label related functions.

The structure of a label is as follows:

LABEL-ID:
  name: STRING [OPTIONAL]
  description: STRING [OPTIONAL]
  color: STRING [OPTIONAL]
  • LABEL-ID of a label is used to reference it in other entities. If no name is provided, then the LABEL-ID is considered the name.
  • name [OPTIONAL] is the name of the label as seen on GitHub.
  • description [OPTIONAL] is a short description of the label. Must be 100 characters or fewer.
  • color [OPTIONAL] is the hexadecimal color code for the label, with or without the leading #.

If the label does not exist in the repository, it will be created.

If the label already exists in the repository and the description or the color set in the reviewpad.yml file, then both the description and the color will be updated based on the reviewpad.yml file.

Example​

labels:
  small:
    name: small # optional
    description: Defines a small pull request # optional
    color: d2697a # optional

Group​

A group specifies a list of entities. At the moment, we only support GitHub users.

There are two ways to specify a group:

Group By Enumeration​

- name: STRING
  description: STRING [OPTIONAL]
  kind: developers [OPTIONAL]
  spec: "[LIST OF GITHUB USERS]"
  • name of a group is used to reference it in other entities.
  • description [OPTIONAL] is a string that can be used to provide more details about the group.
  • kind [OPTIONAL] of group can only be developers at the moment.
  • spec is an Aladino array.

Example​

groups:
  - name: seniors
    description: project seniors # optional
    kind: developers # optional
    spec: '["peter"]'

Group By Filter​

- name: STRING
  description: STRING [OPTIONAL]
  kind: developers
  type: filter
  param: VARIABLE
  where: ALADINO-BOOLEAN-EXPRESSION
  • name of a group is used to reference it in other entities.
  • description [OPTIONAL] is a string that can be used to provide more details about the group.
  • kind of group can only be developers at the moment.
  • type with filter specifies that we will require a param and a boolean spec.
  • param declares the name of a variable representing a single developer.
  • where is an Aladino boolean expression that uses the param variable to define a condition on which developers should be part of the group.

Example​

groups:
  - name: new-joiners
    description: Groups of developers that have created less than 10 pull requests # optional
    kind: developers
    type: filter
    param: dev
    where: $pullRequestCountBy($dev) < 10

Rule​

A Reviewpad rule specifies a boolean condition on a pull request.

The structure of a rule is as follows:

- name: STRING
  kind: [patch | author] [OPTIONAL]
  description: STRING [OPTIONAL]
  spec: ALADINO-BOOLEAN-EXPRESSION
  • name of a rule is used to reference it in other rules and workflows.
  • kind [OPTIONAL] of a rule can be either patch or author. The kind is related to different properties of pull requests that will be used in the evaluation of the spec field.
  • description [OPTIONAL] is a string that can be used to provide more details about the rule.
  • spec is a boolean expression in Aladino.

Example​

rules:
  - name: small-change
    kind: patch # optional
    description: Checks if the pull request size is small # optional
    spec: $size() < 30

Workflow​

A workflow is a specification of a list of actions to be executed if the pull request satisfies any of the specified rules.

The structure of a workflow is as follows:

- name: STRING
  description: STRING [OPTIONAL]
  always-run: BOOLEAN [OPTIONAL]
  on:
    - [pull_request | issue]
  if:
    - rule: REF_TO_RULE_1 | INLINE_RULE_1
      extra-actions: [OPTIONAL]
        - ACTION_1
        - ACTION_2
        ...
        - ACTION_N
    ...
    - rule: REF_TO_RULE_N | INLINE_RULE_N
  then: [OPTIONAL]
    - ACTION_1
    - ACTION_2
    ...
    - ACTION_N
  • name is a string that identifies the workflows.
  • description [OPTIONAL] is a string that can be used to provide more details about the workflow.
  • always-run [OPTIONAL] field is a boolean that specifies if the workflow should run regardless of whether the previous workflows ran or not. If true then the workflow will always run. If false then the workflow will run only if none of the previous workflows have run. By default, this field is false. For instance, if workflow B has a precedent workflow A and both have always-run: false then workflow B will run only if workflow A has not run. If workflow B has always-run: true then it will run regardless of whether workflow A has run or not.
  • on [OPTIONAL] field is a list of GitHub entity types that should trigger the workflow. By default, the value is pull_request.
  • if field specifies which rules should be checked. For each rule, we can also specify a list of extra actions that will be executed if this rule is activated by the pull request.
  • then field is a list of Reviewpad actions that should run.

Example​

workflows:
  - name: size-labelling
    description: Label pull request based on size # optional
    on: # optional
      - pull_request
    if:
      - rule: $size() < 90
        extra-actions: $addLabel("small")

This configuration specifies one workflow called size-labelling which automatically labels a pull_request with the label small if the inline rule $size() < 90 is true. This means that the total number of changed lines i.e. $size is lower than 90.

Pipeline​

The structure of a pipeline is as follows:

- name: STRING
  description: STRING [OPTIONAL]
  trigger: [STRING | RULE] [OPTIONAL]
  stages:
    - actions:
      - ACTION_1
      - ACTION_2
      ...
      - ACTION_N
      until: [STRING | RULE] [OPTIONAL]
    ...
    - actions:
      - ACTION_1
      - ACTION_2
      ...
      - ACTION_N
      until: [STRING | RULE] [OPTIONAL]
  • name is a string that identifies the pipeline.
  • description [OPTIONAL] is a string that can be used to provide more details about the pipeline.
  • trigger [OPTIONAL] field is a rule that if true enables the pipeline.
  • stages is a list of stages of the pipeline. Each stage is a list of actions that will execute until the until condition is true.

Example​

pipelines:
    - name: security-changes
    trigger: '$hasFilePattern("services/db/migrations/**")'
    stages:
        - actions:
                - '$assignReviewer(["john"], "reviewpad")'
            until: $reviewerStatus("john") == "APPROVED"
        - actions:
                - '$assignTeamReviewer(["security"])'

This configuration specifies one pipeline called security-changes which is triggered when there are changes to the files in the database migration, and these files will be first reviewed by john and only when john approves the changes, they will be reviewed by the security team.