private var scope

A important feature of call func is to segregate a group of vars, including local vars and all inheriting vars in callee from other func’s local vars

The key to use this patter is to use multiple layers of call hierarchical structure, for example, main task, the routing layer func, the implmentation layer tasks. You will put all local vars to a call func, so that the global vars scope will not be polluted, changes will be made and applied within the layer of called implementation only

Demo

source

Main task yaml file
    tasks:
    - name: task
      task:
      - func: call
        vars:
          layer1_aaa: layer1_aaa
          layer1_bbb: layer1_bbb
        do:
        - layer2
        loop:
        - layer1-tom
        - layer1-peter
        - layer1-james
    - name: layer2
      task:
      - func: cmd
        do:
        - name: print
          cmd: 'hello {{.loopitem}}'
        - name: print
          cmd: 'hello layer1_aaa: {{.layer1_aaa}}'
      - func: cmd
        do:
        - name: print
          cmd: 'hello {{.loopitem}}'
        - name: print
          cmd: 'hello layer1_bbb: {{.layer1_bbb}}'
Main log file
    loading [Config]:  ./tests/functests/upconfig.yml
    Main config:
                 Version -> 1.0.0
                  RefDir -> ./tests/functests
                 WorkDir -> cwd
              AbsWorkDir -> /up_project/up
                TaskFile -> c0094
                 Verbose -> vvv
              ModuleName -> self
               ShellType -> /bin/sh
           MaxCallLayers -> 8
                 Timeout -> 3600000
     MaxModuelCallLayers -> 256
               EntryTask -> task
      ModRepoUsernameRef -> 
      ModRepoPasswordRef -> 
    work dir: /up_project/up
    -exec task: task
    loading [Task]:  ./tests/functests/c0094
    module: [self], instance id: [dev], exec profile: []
    profile -  envVars:
    
    (*core.Cache)({
    })
    
    Task1: [task ==> task:  ]
    -Step1:
    self: final context exec vars:
    
    (*core.Cache)({
      "up_runtime_task_layer_number": 0,
      "layer1_bbb": "layer1_bbb",
      "layer1_aaa": "layer1_aaa"
    })
    
    =Task2: [task ==> layer2:  ]
    --Step1:
    self: final context exec vars:
    
    (*core.Cache)({
      "up_runtime_task_layer_number": 1,
      "layer1_bbb": "layer1_bbb",
      "layer1_aaa": "layer1_aaa",
      "loopitem": "layer1-tom",
      "loopindex": 0,
      "loopindex1": 1
    })
    
    ~~SubStep1: [print:  ]
    hello layer1-tom
    ~~SubStep2: [print:  ]
    hello layer1_aaa: layer1_aaa
    --Step2:
    self: final context exec vars:
    
    (*core.Cache)({
      "up_runtime_task_layer_number": 1,
      "layer1_bbb": "layer1_bbb",
      "layer1_aaa": "layer1_aaa",
      "loopitem": "layer1-tom",
      "loopindex": 0,
      "loopindex1": 1
    })
    
    ~~SubStep1: [print:  ]
    hello layer1-tom
    ~~SubStep2: [print:  ]
    hello layer1_bbb: layer1_bbb
    =Task2: [task ==> layer2:  ]
    --Step1:
    self: final context exec vars:
    
    (*core.Cache)({
      "layer1_bbb": "layer1_bbb",
      "layer1_aaa": "layer1_aaa",
      "loopitem": "layer1-peter",
      "loopindex": 1,
      "loopindex1": 2,
      "up_runtime_task_layer_number": 1
    })
    
    ~~SubStep1: [print:  ]
    hello layer1-peter
    ~~SubStep2: [print:  ]
    hello layer1_aaa: layer1_aaa
    --Step2:
    self: final context exec vars:
    
    (*core.Cache)({
      "loopindex1": 2,
      "up_runtime_task_layer_number": 1,
      "layer1_bbb": "layer1_bbb",
      "layer1_aaa": "layer1_aaa",
      "loopitem": "layer1-peter",
      "loopindex": 1
    })
    
    ~~SubStep1: [print:  ]
    hello layer1-peter
    ~~SubStep2: [print:  ]
    hello layer1_bbb: layer1_bbb
    =Task2: [task ==> layer2:  ]
    --Step1:
    self: final context exec vars:
    
    (*core.Cache)({
      "loopindex1": 3,
      "up_runtime_task_layer_number": 1,
      "layer1_bbb": "layer1_bbb",
      "layer1_aaa": "layer1_aaa",
      "loopitem": "layer1-james",
      "loopindex": 2
    })
    
    ~~SubStep1: [print:  ]
    hello layer1-james
    ~~SubStep2: [print:  ]
    hello layer1_aaa: layer1_aaa
    --Step2:
    self: final context exec vars:
    
    (*core.Cache)({
      "layer1_bbb": "layer1_bbb",
      "layer1_aaa": "layer1_aaa",
      "loopitem": "layer1-james",
      "loopindex": 2,
      "loopindex1": 3,
      "up_runtime_task_layer_number": 1
    })
    
    ~~SubStep1: [print:  ]
    hello layer1-james
    ~~SubStep2: [print:  ]
    hello layer1_bbb: layer1_bbb
Logs with different verbose level
Raw logs with different verbose level