When you use a runtime expression, it must take up the entire right side of a definition. If you're setting a variable from one stage to another, use stageDependencies. An expression can be a literal, a reference to a variable, a reference to a dependency, a function, or a valid nested combination of these. Never echo secrets as output. In the example above, the condition references an environment and not an environment resource. YAML Copy parameters: - name: listOfValues type: object default: this_is: a_complex: object with: - one - two steps: - script: | echo "$ {MY_JSON}" env: MY_JSON: $ { { convertToJson (parameters.listOfValues) }} Script output: JSON Copy { "this_is": { "a_complex": "object", "with": [ "one", "two" ] } } counter Azure devops yaml template passing hashset While these solutions are creative and could possibly be used in some scenarios, it feels cumbersome, errorprone and not very universally applicable. The Azure DevOps CLI commands are only valid for Azure DevOps Services (cloud service). Therefore, job B is skipped, and none of its steps run. In this alternate syntax, the variables keyword takes a list of variable specifiers. # compute-build-number.yml # Define parameter first way: parameters: minVersion: 0 # Or second way: parameters: - name: minVersion type: number value: 0 steps: - task: Bash@3 displayName: 'Calculate a build number' inputs: targetType: 'inline' script: | echo Computing with $ { { parameters.minVersion }} When you set a variable in the UI, that variable can be encrypted and set as secret. Detailed guide on how to use if statements within Azure DevOps YAML pipelines. You can define a variable in the UI and select the option to Let users override this value when running this pipeline or you can use runtime parameters instead. To reference an environment resource, you'll need to add the environment resource name to the dependencies condition. parameters Update 2: Check out my GitHub repo TheYAMLPipelineOne for examples leveraging this method. Conditions are evaluated to decide whether to start a stage, job, or step. Values in an expression may be converted from one type to another as the expression gets evaluated. or slice then to reference the variable when you access it from a downstream job, When operating on a collection of items, you can use the * syntax to apply a filtered array. You can update variables in your pipeline with the az pipelines variable update command. Advanced Azure DevOps YAML Objects To set a variable from a script, you use a command syntax and print to stdout. System and user-defined variables also get injected as environment variables for your platform. When you define a variable, you can use different syntaxes (macro, template expression, or runtime) and what syntax you use determines where in the pipeline your variable renders. YAML #azure-pipelines.yml jobs: - template: 'shared_pipeline.yml' parameters: pool: 'default' demand1: 'FPGA -equals True' demand2: 'CI -equals True' This would work well and meet most of your needs if you can confirm you've set the capabilities: Share Follow answered Aug 14, 2020 at 2:29 LoLance 24.3k 1 31 67 Each element in the array is converted to a string. To pass variables to jobs in different stages, use the stage dependencies syntax. More info about Internet Explorer and Microsoft Edge, different syntaxes (macro, template expression, or runtime). Runtime expressions are intended as a way to compute the contents of variables and state (example: condition). Do any of your conditions make it possible for the task to run even after the build is canceled by a user? By default, a job or stage runs if it doesn't depend on any other job or stage, or if all of the jobs or stages it depends on have completed and succeeded. This tells the system to operate on foo as a filtered array and then select the id property. This can lead to your stage / job / step running even if the build is cancelled. This doesn't update the environment variables, but it does make the new You can also conditionally run a step when a condition is met. Instead, you must use the displayName property. If the right parameter is not an array, the result is the right parameter converted to a string. parameters: - name: myString type: string default: a string - name: myMultiString type: string default: default values: - default I have omitted the actual YAML templates as this focuses more In that case, you should use a macro expression. Must be single-quoted. When you use this condition on a stage, you must use the dependencies variable, not stageDependencies. If you're using deployment pipelines, both variable and conditional variable syntax will differ. Update 2: Check out my GitHub repo TheYAMLPipelineOne for examples leveraging this method. In Microsoft Team Foundation Server (TFS) 2018 and previous versions, Concatenates all elements in the right parameter array, separated by the left parameter string. Azure DevOps YAML an output variable by using isOutput=true. According to the documentation all you need is a json structure that With YAML we have Templates which work by allowing you to extract a job out into a separate file that you can reference. A place where magic is studied and practiced? For example: Variables are expanded once when the run is started, and again at the beginning of each step. In the YAML file, you can set a variable at various scopes: When you define a variable at the top of a YAML, the variable is available to all jobs and stages in the pipeline and is a global variable. If you need a variable to be settable at queue time, don't set it in the YAML file. This function can only be used in an expression that defines a variable. According to this document Variable groups for Azure Pipelines - Azure Pipelines | Microsoft Docs, to reference a variable group, use macro syntax or a runtime expression, therefore the parameter cannot be defined with the value of variable from a variable group. Azure Just remember these points when working with conditional steps: The if statement should start with a dash -just like a normal task step would. parameters: xxxx jobs: - job: provision_job I want to use this template for my two environments, here is what in mind: stages: - stage: PreProd Environment - template: InfurstructureTemplate.yaml - parameters: xxxx - stage: Prod Environment - template: InfurstructureTemplate.yaml - parameters: xxxx On the agent, variables referenced using $( ) syntax are recursively expanded. The most common use of expressions is in conditions to determine whether a job or step should run. Macro syntax variables are only expanded for stages, jobs, and steps. "bar" isn't masked from the logs. However, don't use a runtime expression if you don't want your empty variable to print (example: $[variables.var]). Azure DevOps The elseif and else clauses are are available starting with Azure DevOps 2022 and are not available for Azure DevOps Server 2020 and earlier versions of Azure DevOps. Job B has a condition set for it. Casts parameters to String for evaluation, If the left parameter is an array, convert each item to match the type of the right parameter. Just remember these points when working with conditional steps: The if statement should start with a dash -just like a normal task step would. For example, the variable name any.variable becomes the variable name $ANY_VARIABLE. Expressions can be used in many places where you need to specify a string, boolean, or number value when authoring a pipeline. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. You can browse pipelines by Recent, All, and Runs. pool The pool keyword specifies which pool to use for a job of the pipeline. In YAML pipelines, you can set variables at the root, stage, and job level. Release.Artifacts. Azure The equality comparison for each specific item evaluates, Ordinal ignore-case comparison for Strings. Runtime expression variables are only expanded when they're used for a value, not as a keyword. Azure You can use each syntax for a different purpose and each have some limitations. Therefore, stage2 is skipped, and none of its jobs run. # compute-build-number.yml # Define parameter first way: parameters: minVersion: 0 # Or second way: parameters: - name: minVersion type: number value: 0 steps: - task: Bash@3 displayName: 'Calculate a build number' inputs: targetType: 'inline' script: | echo Computing with $ { { parameters.minVersion }} runs are called builds, You can make a variable available to future jobs and specify it in a condition. Complex objects are converted to empty string. #azure-pipelines.yml jobs: - template: 'shared_pipeline.yml' parameters: pool: 'default' demand1: 'FPGA -equals True' demand2: 'CI -equals True' This would work well and meet most of your needs if you can confirm you've set the capabilities: Share Follow answered Aug 14, 2020 at 2:29 LoLance 24.3k 1 31 67 If so, then specify a reasonable value for cancel timeout so that these kinds of tasks have enough time to complete after the user cancels a run. parameters: - name: param_1 type: string default: a string value - name: param_2 type: string default: default - name: param_3 type: number default: 2 - name: param_4 type: boolean default: true steps: - $ { { each parameter in parameters }}: - script: echo '$ { { parameters.Key }} -> $ { { parameters.Value }}' azure-devops yaml Counters are scoped to a pipeline. At the job level, you can also reference outputs from a job in a previous stage. parameters.name A parameter represents a value passed to a pipeline. Secrets are available on the agent for tasks and scripts to use. Azure DevOps You can specify the conditions under which each stage, job, or step runs. Azure DevOps I have omitted the actual YAML templates as this focuses more In a runtime expression ($[ ]), you have access to more variables but no parameters. Use succeededOrFailed() in the YAML for this condition. Environment variables are specific to the operating system you're using. By default, variables created from a step are available to future steps and don't need to be marked as multi-job output variables using isOutput=true. Subsequent runs will increment the counter to 101, 102, 103, Later, if you edit the YAML file, and set the value of major back to 1, then the value of the counter resumes where it left off for that prefix. You'll see a warning on the pipeline run page. For example, if you have a job that sets a variable using a runtime expression using $[ ] syntax, you can't use that variable in your custom condition. They use syntax found within the Microsoft Edit a YAML pipeline To access the YAML pipeline editor, do the following steps. The default time zone for pipeline.startTime is UTC. For example, this snippet takes the BUILD_BUILDNUMBER variable and splits it with Bash. parameters Azure What is a word for the arcane equivalent of a monastery? The reason is because job B has the default condition: succeeded(), which evaluates to false when job A is canceled. Lets have a look at using these conditional expressions as a way to determine which variable to use depending on the parameter selected. Includes information on eq/ne/and/or as well as other conditionals. Choose a runtime expression if you're working with conditions and expressions.