SWARM Task Runner

A cross-platform and extendable task-execution CLI.

The features are:

• Cross-platform: it can be executed on Windows, MacOs, and any Linux distro.
• No dependency: the release packages includes all the libraries it needs to execute.
• Extendable: it can be extended by add other modules.
• Human Readable: the tasks are defined in yaml format.

Install

Download the right release for your needs.

NOTE: we will publish the github registry once we get accepted.

Usage

Run runner --help to see the usage.

Example

Definition File

The definition is written by yaml

Elements

• version: requested string, currently only "1.0.0"
• label: optional string, it presents on log
• modules: optional object
  • module-name: dotnet class full name like "copy: Swarm.TaskRunner.Steps.CopyModule" or "copy: Swarm.TaskRunner.Steps.CopyModule, Swarm.TaskRunner" the assembly name can be
• required-envs: optional string array, like "- ENV_NAME"
• optional-envs: optional object array
  • -name: the name of env
  •  defaultValue: default value
• steps: optional module array
• onError optional module array

Modules

Module are extendable by inheriting Swarm.TaskRunner.Modules.Module and implementing two functions Parse and Execute. Then put the dll on the same folder. To use the module, put the type full name in modules element.

Each module has two common elements

• module: requested string, the system use this string as module name to found the module in modules
• label: optional string, it presents on log

These are current supported modules:

1. Copy Module: copy files in the source folder to another folder

   • Type Full Name: Swarm.TaskRunner.Modules.CopyModule
   • Elements:
     • source: requested string, the source folder, support env
     • target: requested string, the target folder, support env
     • pattern: optional string, the pattern to copy, support env

2. Command Module: execute a command

   • Type Full Name: Swarm.TaskRunner.Modules.CommandModule
   • Elements:
     • file: requested string, the path to the executable file, support env
     • pwd: optional string, the path of the working directory, support env, if this value is not provided, the runner will use the path of --working-directory or the current working directory.
     • args: optional string array or one string, support env

3. Echo Module: show a message

   • Type Full Name: Swarm.TaskRunner.Modules.CommandModule
   • Elements:
     • message: requested string, the message to show, support env

4. Request Module: shed a request to the remote server by url

   • Type Full Name: Swarm.TaskRunner.Modules.RequestModule
   • Elements:
     • url: requested string, the url, support env
     • method: requested string, the http method
     • headers: optional key value string, support env
     • body: optional optional string, support env

Env Support

Some options support environment variable replace, the syntax is ${ENV_NAME}. For example, ${LIBRARY_PATH}/folder/file,

Example

version: "1.0.0"
label: "example"
modules:
  command: Swarm.TaskRunner.Modules.CommandModule
  request: Swarm.TaskRunner.Modules.RequestModule
  copy: Swarm.TaskRunner.Modules.CopyModule
  echo: Swarm.TaskRunner.Modules.EchoModule, Swarm.TaskRunner
required-envs:
  - "SOURCE_PATH"
optional-envs:
  - name: "TARGET_PATH"
    defaultValue: "./"
steps:
- module: "copy"
  label: "copy file"
  source: "${SOURCE_PATH}"
  target: "${TARGET_PATH}"
    
- module: "command"
  file: "powershell.exe"
  args:
    - "-Command"
    - "dir"
    - "${TARGET_PATH}"

- module: "request"
  method: "GET"
  url: "http://test.com"
  headers:
    x-client-key: key

- module: "echo"
  message: "Files in ${SOURCE_PATH} are copied to ${TARGET_PATH}"

Develop

This project uses .net core and written in C#. For development, you need to

• Install .net core sdk
• Use VS Code or VS or Rider IDE to develop
• Use dotnet run to execute
• Use dotnet test to execute unit tests

Publish

Use dotnet publish with runtime argument to generate stand-alone binaries.

dotnet publish -c Release; # only dlls
dotnet publish -c Release -r win-x64; # for windows
dotnet publish -c Release -r osx-x64; # for mac
dotnet publish -c Release -r linux-x64; # for mac

You can see other runtime on this document

Build As DotNet Tool

Runner supports dotnet tool.

# pack the NuGet package
dotnet pack ./Swarm.TaskRunner/Swarm.TaskRunner.csproj -c Tool

# install runner from local folder
dotnet tool install --global --add-source ./Swarm.TaskRunner/nupkg runner

# test
runner -h