Variables

4min

Microtica allows you to define custom variables that can be used to parametrize the way your pipeline works.
In each pipeline, Microtica will automatically inject a predefined set of variables like MIC_PIPELINE_EXECUTION_ID, MIC_USER_NAME, MIC_COMMIT_REF etc. that can be used in conjunction with the custom variables.
Use pipeline variables when you want to:
parametrize the way your pipeline works
avoid hard-coding within the step execution logic
avoid storing sensitive information within the pipeline yaml
Microtica offers two types of variables:
plaintext variables
sensitive variables
Adding variables can be done during creating/modifying pipeline from the GUI. Environment variables will automatically became available to use in pipeline runtime environment using a standard Unix syntax ${variable-name}.
Environment variables in Microtica
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In the following example, we are using predefined variables SONAR_URL and SONAR_LOGIN.
We can reference a custom as well as Microtica predefined variables directly in the step parameters. In this case, we are setting the tag for the Docker image to be the value of {{MIC_PIPELINE_EXECUTION_ID}}.
microtica.yaml
steps:
  AnalyseApp:
    image: node:latest
    commands:
      - sonar-scanner -Dsonar.host.url=${SONAR_URL} -Dsonar.login=${SONAR_LOGIN}
  DockerPush:
    type: docker-push
    image_name: microtica/user-service
    tag: "{{MIC_PIPELINE_EXECUTION_ID}}"
    registry: dockerhub
steps:
  AnalyseApp:
    image: node:latest
    commands:
      - sonar-scanner -Dsonar.host.url=${SONAR_URL} -Dsonar.login=${SONAR_LOGIN}
  DockerPush:
    type: docker-push
    image_name: microtica/user-service
    tag: "{{MIC_PIPELINE_EXECUTION_ID}}"
    registry: dockerhub
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As we marked SONAR_LOGIN variable as sensitive, the value will be stored encrypted and securely decrypted only within the step execution boundary.
Usage syntax
Use ${variable-name} syntax when you want to reference the built-in or custom environment variables from the commands section (i.e. step runtime instructions).
Use "{{variable-name}}" syntax as a templating in the microtica.yaml file. Variables will be replaced with the respective values before pipeline execution.
When using templating, always put variables in quotation marks.
Security consideration
Never hard-code sensitive data in pipeline yaml. 
For security reasons, always enable the sensitive flag when specifying parameters like passwords, secret tokens or any other data which is considered as sensitive.
Predefined variables
In each step execution, Microtica will automatically inject a set of predefined variables you can use within the pipeline.
Variable
Description
MIC_COMMIT_TYPE
The type of reference with the change. Possible values: branch or tag.
MIC_COMMIT_REF
Commit ref. For commit type branch the value will be the commit hash. For tags, the values will be the name of the tag.
MIC_COMMIT_NAME
The name of the branch or tag.
MIC_BRANCH_FILTER
Pipeline branch filter. The pipeline will be triggered only if the commit branch matches the branch filter.
MIC_COMMIT_MESSAGE
Commit message associated with the Git repository revision.
MIC_GIT_ACCOUNT_ID
Git account ID.
MIC_GIT_PROVIDER
Git provider. Possible values: bitbucket or github.
MIC_GIT_ACCESS_TOKEN
Temporary Git access token for the repository associate with the pipeline.
MIC_MANUAL_TRIGGER
Indicates if the pipeline was triggered by Git webhook or manually by the user. Possible values: true or false.
MIC_PIPELINE_ID
The pipeline id.
MIC_PIPELINE_NAME
The pipeline name.
MIC_PIPELINE_EXECUTION_ID
A unique identifier for the current pipeline execution.
MIC_PIPELINE_EXECUTION_TIMESTAMP
Timestamp of the pipeline trigger time in UTC format.
MIC_PROJECT_ID
Project id.
MIC_USER_ID
User id. For manual pipeline trigger the value is Microtica user id, for Git webhook it’s the Git user id.
MIC_USER_NAME
The name of the user who triggered the pipeline.
MIC_USER_AVATAR
URL of the user avatar picture.
MIC_WORKDIR
Path to the Git subdirectory. Suitable for monorepos. If specified, the pipeline will be triggered only if files in the specified dir are modified.
Microtica expects to find microtica.yaml in the specified dir.
MIC_REPO_URL
Repository URL.
MIC_REPO_FULLNAME
Repository full name.
MIC_REPO_NAME
Repository name.
MIC_REPO_CLONE_URL
Repository HTTPS clone URL.
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Variable	Description
MIC_COMMIT_TYPE	The type of reference with the change. Possible values: branch or tag.
MIC_COMMIT_REF	Commit ref. For commit type branch the value will be the commit hash. For tags, the values will be the name of the tag.
MIC_COMMIT_NAME	The name of the branch or tag.
MIC_BRANCH_FILTER	Pipeline branch filter. The pipeline will be triggered only if the commit branch matches the branch filter.
MIC_COMMIT_MESSAGE	Commit message associated with the Git repository revision.
MIC_GIT_ACCOUNT_ID	Git account ID.
MIC_GIT_PROVIDER	Git provider. Possible values: bitbucket or github.
MIC_GIT_ACCESS_TOKEN	Temporary Git access token for the repository associate with the pipeline.
MIC_MANUAL_TRIGGER	Indicates if the pipeline was triggered by Git webhook or manually by the user. Possible values: true or false.
MIC_PIPELINE_ID	The pipeline id.
MIC_PIPELINE_NAME	The pipeline name.
MIC_PIPELINE_EXECUTION_ID	A unique identifier for the current pipeline execution.
MIC_PIPELINE_EXECUTION_TIMESTAMP	Timestamp of the pipeline trigger time in UTC format.
MIC_PROJECT_ID	Project id.
MIC_USER_ID	User id. For manual pipeline trigger the value is Microtica user id, for Git webhook it’s the Git user id.
MIC_USER_NAME	The name of the user who triggered the pipeline.
MIC_USER_AVATAR	URL of the user avatar picture.
MIC_WORKDIR	Path to the Git subdirectory. Suitable for monorepos. If specified, the pipeline will be triggered only if files in the specified dir are modified. Microtica expects to find microtica.yaml in the specified dir.
MIC_REPO_URL	Repository URL.
MIC_REPO_FULLNAME	Repository full name.
MIC_REPO_NAME	Repository name.
MIC_REPO_CLONE_URL	Repository HTTPS clone URL.

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