On top of the default action roster, users can define their own actions in YAML and use them in their pipelines. The actions are run in Docker containers launched from images pulled from the Docker Hub registry. A Docker container acts like a local dev environment with preinstalled operating system, tools, and dependencies. In the container, you can run commands on your repository files, run calls to any publicly available third-party API, and export input data to variables to use them in other actions in the pipeline.
Custom actions are defined with three elements:
All three must be uploaded to the default branch of the repository:
- The root directory of the repository (single action)
.buddy/actionsdirectory, with each action in its own subdirectory (multiple actions), for example:
The folder with the action definition, icon, and description should look like this:
/action.yml /action.png /README.md
Once uploaded, Buddy will automatically parse the action and display it at the top of the action list:
Custom actions on action list
The icon is displayed on the action's tile and configuration screen.
- name: must be
- extension: jpg, jpeg, png, svg
- size: 40x40 px min., scalable
An action can have a description in the form of a
README.md file. We recommend uploading such file to your action directory with a description of what the action does and required parameters, commands, and variables. You can also add a changelog with the list of updates to track how your action evolves.
Custom actions are defined as code in a similar manner to default Buddy actions. The file with the definition must be named
action.yml. In the file, you can configure the following items:
- Commands to execute (optional)
- Filesystem & cache (optional)
- Docker image (i.e. run environment)
- Outputs (optional)
Here we can see an action with three inputs: user, IP, and password. The inputs are passed as variables to the command. The values are then produced in the action logs with the
echo command. The command is run in the Ubuntu environment in the latest version.
name: "My_Action" inputs: user: type: TEXT required: true ip: type: TEXT password: type: PASSWORD required: true execute_commands: - echo $user@$ip -p $password docker_image_name: "ubuntu" docker_image_tag: "latest"
The name of the action must be unique throughout the whole workspace, i.e. cannot be the same as any action name on the default list of actions. If the name is not unique, a parsing error will appear. Underscores are parsed into spacebars by default. For example, an action named "My_Custom_Action" will be displayed as "My Custom Action".
By default, custom actions are added to the Custom / Popular section of the action list. You can define your own categories by adding the
category parameter to the YAML file:
name: "My_Custom_Action" category: "Example Inputs"
The inputs let you specify the data that the action requires. You can add single or multi-line text inputs, checkboxes, command fields, selectors, and more.
In this example, we can see two inputs: one is a simple text field for entering the username, the second is a masked input for the password. Both fields are required.
inputs: user: type: TEXT required: true password: type: PASSWORD required: true
By default, the action runs the commands baked in the Docker image. You can overwrite these commands by adding the
execute_commands: - echo $user@$ip -p $password
If your action requires repository files, you need to attach the pipeline filesystem to it, i.e. define the
volume_mappings parameter. The filesystem is a directory exclusive to every pipeline. When a pipeline is run, Buddy pulls the repo to the filesystem, allowing you to run commands on the files it contains. The processed files and artifacts stay in the filesystem, available for use by other actions in the pipeline.
volume_mappings: - /:/buddy
You can also cache additional directories with the
cached_dirs parameter. This feature is useful if your action downloads files on every run – caching them will speed up the execution time.
volume_mappings: - /:/buddy working_directory: "/buddy/example-folder" cached_dirs: - "/cache-local" - "/cache-application"
- No filesystem is mounted.
- No extra directories (
cached_dirs) are cached.
- The working directory remains as defined in the Docker image.
Custom actions are run in an isolated container launched from an image defined by the user. The Docker image must be stored on the Docker Hub and be publicly available. If your action does not require a specific language and/or framework, we recommend using the official Ubuntu image in the latest version:
docker_image_name: "ubuntu" docker_image_tag: "latest"
reset_entrypoint: trueto the configuration.
When the action is run, the values of the inputs are passed to the container as non-settable environment variables. These variables can be generated in the action with the
inputs: first_input: output: variables: first_input: example: "The description of the variable." info: "The contents of the tooltip" masked: true
A variable can be described with three parameters:
masked: hides the value of the variable in the logs
example: adds an example/description
info: displays a tooltip on mouse hover
The variables can also be exported and used by other actions in the pipeline for the duration of the pipeline run using the
export INPUT_NAME command:
execute_commands: - export first_input - export second_input
Here we have an action with two inputs reproduced into variables. The third variable is created by the action's commands:
name: "Output_Example" inputs: first_input: default: "Example text" second_input: required: true execute_commands: - export first_input - export second_input - export maskedVar="hidden_value" docker_image_name: "ubuntu" docker_image_tag: "latest" output: variables: first_input: example: "This variable has a default value." info: "Tooltip #1" second_input: example: "This variable is required." maskedVar: example: "This variable is created by the action and masked." info: "Tooltip #3" masked: true
Custom action with generated variables
The output of the action closely follows the descriptions from the screenshot:
If your custom action has inputs defined, they are displayed in the Setup tab of the action. You can add extra tabs to keep your action clear and organized:
name: "custom_TABS" execute_commands: - echo $path_app - echo $path_docs tabs: AWS: aws_integration: type: AWS_INTEGRATION required: true GitHub: gh_integration: type: GITHUB_INTEGRATION required: true Filesystem: path_app: name: "App Path" type: FILESYSTEM_PATH required: true path_docs: name: "Documentation Path" type: FILESYSTEM_PATH required: true docker_image_name: "node" docker_image_tag: "latest" volume_mappings: - /:/buddy
In this example, the Setup is not generated as there are no
inputs defined. Instead, the parameters are described in three tabs:
Custom action with tabs defined
Tab order in custom actions
- Setup tab (displayed if
- Custom tabs (displayed if
- Variables (toggled on/off in the Options tab)
- Trigger conditions (always displayed)
- Options (always displayed)
Actions should be created and updated in the default branch of the repository and versioned with Git tags. An action can have as many versions as created tags, with the latest version of the action always stored in the HEAD of the default branch. You can select the version of the action from the dropdown button:
Selecting action version
Once you push your action, it should appear at the top of the action list. If you don't see it on the list, you can check what the problem is in the push details on the Activity tab:
Activity screen with push events
Clicking the event will expand push details where you can check what the error is exactly:
Parsing details in push event
Once an action is successfully parsed, it becomes permanent in the workspace. When an action is removed, it changes it state to deprecated, but can still be added from the action list and continues to work in its host pipelines. This is a security measure to prevent pipelines from failing in case the action repository is unwillingly removed. Changing the
name of the action in
action.yml creates a new action in the workspace, leaving the old as it was.
To add your action to the pipeline via YAML, follow the pattern below:
- action: "Pipeline_action_name" type: "CUSTOM" custom_type: "name:tag"
action is the name the action is labeled with in the pipeline, and
custom_type is the
name of the custom action that you want to use.
- action: "Worker scaling" type: "CUSTOM" custom_type: "workers_custom:latest"
|name ||String||The ID of the action in the YAML definition. 40 chars max (a-zA-Z0-9_)|
|docker_image_name ||String||The Docker image from which the container is launched.|
|docker_image_tag ||String||The tag of the Docker image from which the container is launched.|
|reset_entrypoint||Boolean||If set to |
|execute_commands||String||The list of commands run in the container.|
|shell||String||The type of the command shell. Default: bash|
|title||String||The title of the action displayed on the action tile and the action adding screen. 40 chars max.|
|category||String||The category of the action. 100 chars max.|
|inputs||String||The list of inputs displayed on the action view.|
|tabs||String||The list of tabs displayed on the action view.|
|output||String ||Defines the tables of environment variables generated by the action for the duration of the pipeline run.|
|volume_mappings||String||The path preceding the colon is the filesystem path (the folder from the filesystem to be mounted in the container). The path after the colon is the container path (the path in the container, where this filesystem will be located).|
|cached_dirs||String ||The additional container’s directories that will be cached between executions.|
|id ||String||The ID of the input. Used to create the environment variable in the container. 40 chars max (a-zA-Z0-9_). Must be unique. Must not start with buddy. Case sensitive, i.e. |
|name||String||The name displayed on the label of the input. 100 chars max. If not provided, fetches the value from the ID and replaces underscores |
|type||String||The type of the input. Default: |
|info||String||Adds a description with additional information below the input. 200 chars max.|
|options||String ||The options of the input. Required by |
|default||String||The optional default value injected to the input.|
|TEXT||A one-line text input. Supports masking.|
|TEXTAREA||A multi-line text input. Supports masking.|
|PASSWORD||Used to enter password credentials. Always masked.|
|SELECT||A selector list. Requires |
|AUTOCOMPLETE||Supports autocompletion. Requires |
|CHECKBOX||A box that can be ticked on and off.|
|COMMAND||A multi-line text area styled after build actions. Supports masking.|
|FILESYSTEM_PATH||Used to select paths in the pipeline filesystem. Supports masking.|
|GITHUB_INTEGRATION||Enables selecting the GitHub integration in the project. Uses the integration ID as the input variable. Generates |
|AWS_INTEGRATION||Enables selecting the AWS integration in the project. Uses the integration ID as the input variable. Generates |
name: "input_TEXT" inputs: first_field: name: "Text field #1" required: true second_field: name: "Text field #2" default: "Second text field" third_field: name: "Text field #3" info: "This is an example description for the text field above." execute_commands: - echo $first_field - echo $second_field - echo $third_field docker_image_name: "ubuntu" docker_image_tag: "latest"
Here we can see three text inputs:
- the first is mandatory (
- the second has a default value entered
- the third has an info box with a description
Custom action with TEXT inputs
name: "input_TEXTAREA" inputs: textarea_1: type: TEXTAREA name: "Textarea #1" default: |- First line of multi-line text input. Second line of multi-line text input. Third line of multi-line text input. Fourth line of multi-line text input. textarea_2: type: TEXTAREA name: "Textarea #2" info: "This is an example description for the textarea field above." execute_commands: - echo $textarea_1 - echo $textarea_2 docker_image_name: "ubuntu" docker_image_tag: "latest"
This action has two text areas:
- the first has four lines of default text
- the second one has an infobox with an explanation of what it does
Custom action with TEXTAREA inputs
name: "input_PASSWORD" inputs: password_1: type: PASSWORD name: "First password" required: true password_2: type: PASSWORD name: "Second Password" execute_commands: - echo $password_1 - echo $password_2 docker_image_name: "ubuntu" docker_image_tag: "latest"
In this example, the first password input is mandatory (
required: true), and the second is optional.
Custom action with PASSWORD inputs
You can see the field with the password is masked by default:
name: "input_SELECT" inputs: select_1: type: SELECT name: "First select" required: true options: - "option 1" - "option 2" - "option 3" select_2: type: SELECT name: "Second select" info: "This is an example description for the selector above." default: "option 2" options: - "option 1" - "option 2" - "option 3" execute_commands: - echo $select_1 - echo $select_2 docker_image_name: "ubuntu" docker_image_tag: "latest"
Here we have two selectors:
- the first one is required
- the second has default value of 2 and an infobox with a description
Custom action with SELECT inputs
name: "input_AUTOCOMPLETE" inputs: autocomplete_1: type: AUTOCOMPLETE name: "Example input" options: - "suggestion 1" - "suggestion 2" - "suggestion 3" execute_commands: - echo $autocomplete_1 docker_image_name: "ubuntu" docker_image_tag: "latest"
This type of input supports suggestions. You can enter your own value there, or select one of the suggestions from the list.
Custom action with AUTOCOMPLETE inputs
name: "input_CHECKBOXES" inputs: first_checkbox: type: CHECKBOX name: "Checkbox #1" default: "true" second_checkbox: type: CHECKBOX name: "Checkbox #2" info: "This is an example description for the checkbox above." execute_commands: - echo $first_checkbox - echo $second_checkbox docker_image_name: "ubuntu" docker_image_tag: "latest"
default: "true" in the first input ticks the first checkbox by default. The
info parameter in the second checkbox input adds a line of explanation.
Custom action with CHECKBOX inputs
name: "input_COMMAND" inputs: command_field: name: CMD type: COMMAND default: "ls -al" execute_commands: - bash -c "$command_field" docker_image_name: "ubuntu" docker_image_tag: "latest" volume_mappings: - /:/buddy
Custom action with COMMAND input
In this case, the container has a filesystem attached so that the commands can be run on repository files.
bash -c “$INPUT_NAME"as the execution command for the CMD input. This way the command will always be run properly, regardless of the number of lines.
name: "input_FILESYSTEM" inputs: Filesystem_Path: type: FILESYSTEM_PATH default: "/buddy" docker_image_name: "ubuntu" docker_image_tag: "latest" volume_mappings: - /:/buddy
Custom action with filesystem attached
This type of input lets you select the path in the pipeline filesystem. You can see it attached in
name: "input_GitHub" inputs: github_field: type: GITHUB_INTEGRATION name: "GitHub Integration" default: "github_integration_hash" execute_commands: - gh auth status docker_image_name: "buddy/github-cli" docker_image_tag: "latest"
GITHUB_INTEGRATION parameter adds an input that lets you select the GitHub integration and use it in the action. The action also generates
$GITHUB_TOKEN that can be used in the pipeline.
This action uses a Docker image with the GitHub CLI installed. The executed command retrieves the primary contact information of the account associated with the selected AWS integration:
Custom action logs
defaultwith the integration hash will automatically set the integration in the input.
name: "input_AWS" inputs: aws_field: type: AWS_INTEGRATION name: "AWS Integration" default: "aws_integration_hash" execute_commands: - aws account get-contact-information docker_image_name: "buddy/aws-cli-2" docker_image_tag: "latest"
AWS_INTEGRATION parameter adds an input that lets you select the AWS integration and use it in the action. The action also generates
$AWS_SECRET_ACCESS_KEY that can be used in the pipeline.
This action uses a Docker image with the AWS CLI installed. The executed command verifies and displays information about the authentication state of the selected GitHub integration:
Custom action logs
defaultwith the integration hash will automatically set the integration in the input.
Last modified on November 10, 2023