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Allow retrieving Variable from Task Context #45421

Closed
#45431
Closed
Allow retrieving Variable from Task Context#45421
#45431
Assignees
amoghrajesh
Labels
area:corearea:task-execution-interface-aip72AIP-72: Task Execution Interface (TEI) aka Task SDK
Milestone
Airflow 3.0.0

Description

@kaxil
kaxil
opened on Jan 6, 2025

Similar to #45043, we need a similar thing for Task SDK to fetch Variable from Task Context.

Requirement:

  • A minimal Variable user-facing object in Task SDK definition for use in the DAG file
  • Logic to get Variable in the context.

airflow/airflow/models/taskinstance.py

Lines 1043 to 1046 in f03b1d4

"var": {
"json": VariableAccessor(deserialize_json=True),
"value": VariableAccessor(deserialize_json=False),
},

airflow/airflow/utils/context.py

Lines 117 to 138 in f03b1d4

classVariableAccessor:
"""Wrapper to access Variable values in template."""
def__init__(self, *, deserialize_json: bool) ->None:
self._deserialize_json=deserialize_json
self.var: Any=None
def__getattr__(self, key: str) ->Any:
fromairflow.models.variableimportVariable
self.var=Variable.get(key, deserialize_json=self._deserialize_json)
returnself.var
def__repr__(self) ->str:
returnstr(self.var)
defget(self, key, default: Any=NOTSET) ->Any:
fromairflow.models.variableimportVariable
ifdefaultisNOTSET:
returnVariable.get(key, deserialize_json=self._deserialize_json)
returnVariable.get(key, default, deserialize_json=self._deserialize_json)

Now, we will need following 3 related objects:

  • VariableResponse is auto-generated and tightly coupled with the API schema.
  • VariableResult is runtime-specific and meant for internal communication between Supervisor & Task Runner.
  • Variable class here is where the public-facing, user-relevant aspects are exposed, hiding internal details.

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    Issue actions

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try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
Allow retrieving Variable from Task Context · Issue #45421 · apache/airflow · GitHub
    Skip to content
    Allow retrieving Variable from Task Context #45421
    Closed
    #45431
    Closed
    Allow retrieving Variable from Task Context#45421
    #45431
    Assignees
    amoghrajesh
    Labels
    area:corearea:task-execution-interface-aip72AIP-72: Task Execution Interface (TEI) aka Task SDK
    Milestone
    Airflow 3.0.0
    Description
    @kaxil
    kaxil
    opened on Jan 6, 2025
    Similar to #45043, we need a similar thing for Task SDK to fetch Variable from Task Context.
    Requirement:
    • A minimal Variable user-facing object in Task SDK definition for use in the DAG file
    • Logic to get Variable in the context.
    airflow/airflow/models/taskinstance.py
    
Lines 1043 to 1046
in
f03b1d4
    "var": { 
    "json": VariableAccessor(deserialize_json=True), 
    "value": VariableAccessor(deserialize_json=False), 
     }, 
    airflow/airflow/utils/context.py
    
Lines 117 to 138
in
f03b1d4
    classVariableAccessor: 
    """Wrapper to access Variable values in template."""
    def__init__(self, *, deserialize_json: bool) ->None: 
    self._deserialize_json=deserialize_json
    self.var: Any=None
    def__getattr__(self, key: str) ->Any: 
    fromairflow.models.variableimportVariable
    self.var=Variable.get(key, deserialize_json=self._deserialize_json) 
    returnself.var
    def__repr__(self) ->str: 
    returnstr(self.var) 
    defget(self, key, default: Any=NOTSET) ->Any: 
    fromairflow.models.variableimportVariable
    ifdefaultisNOTSET: 
    returnVariable.get(key, deserialize_json=self._deserialize_json) 
    returnVariable.get(key, default, deserialize_json=self._deserialize_json) 
    Now, we will need following 3 related objects:
    • VariableResponse is auto-generated and tightly coupled with the API schema.
    • VariableResult is runtime-specific and meant for internal communication between Supervisor & Task Runner.
    • Variable class here is where the public-facing, user-relevant aspects are exposed, hiding internal details.
    Metadata
    Metadata
    Assignees
    Labels
    area:corearea:task-execution-interface-aip72AIP-72: Task Execution Interface (TEI) aka Task SDK
    Type
    No type
    Projects
      Milestone
      Relationships
      None yet
      Development
      No branches or pull requests
      Issue actions
      
, 'i');
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var __m = "*";
var __re = new RegExp('^' + ".*" + '
Allow retrieving Variable from Task Context · Issue #45421 · apache/airflow · GitHub
      Skip to content
      Allow retrieving Variable from Task Context #45421
      Closed
      #45431
      Closed
      Allow retrieving Variable from Task Context#45421
      #45431
      Assignees
      amoghrajesh
      Labels
      area:corearea:task-execution-interface-aip72AIP-72: Task Execution Interface (TEI) aka Task SDK
      Milestone
      Airflow 3.0.0
      Description
      @kaxil
      kaxil
      opened on Jan 6, 2025
      Similar to #45043, we need a similar thing for Task SDK to fetch Variable from Task Context.
      Requirement:
      • A minimal Variable user-facing object in Task SDK definition for use in the DAG file
      • Logic to get Variable in the context.
      airflow/airflow/models/taskinstance.py
      
Lines 1043 to 1046
in
f03b1d4
      "var": { 
      "json": VariableAccessor(deserialize_json=True), 
      "value": VariableAccessor(deserialize_json=False), 
       }, 
      airflow/airflow/utils/context.py
      
Lines 117 to 138
in
f03b1d4
      classVariableAccessor: 
      """Wrapper to access Variable values in template."""
      def__init__(self, *, deserialize_json: bool) ->None: 
      self._deserialize_json=deserialize_json
      self.var: Any=None
      def__getattr__(self, key: str) ->Any: 
      fromairflow.models.variableimportVariable
      self.var=Variable.get(key, deserialize_json=self._deserialize_json) 
      returnself.var
      def__repr__(self) ->str: 
      returnstr(self.var) 
      defget(self, key, default: Any=NOTSET) ->Any: 
      fromairflow.models.variableimportVariable
      ifdefaultisNOTSET: 
      returnVariable.get(key, deserialize_json=self._deserialize_json) 
      returnVariable.get(key, default, deserialize_json=self._deserialize_json) 
      Now, we will need following 3 related objects:
      • VariableResponse is auto-generated and tightly coupled with the API schema.
      • VariableResult is runtime-specific and meant for internal communication between Supervisor & Task Runner.
      • Variable class here is where the public-facing, user-relevant aspects are exposed, hiding internal details.
      Metadata
      Metadata
      Assignees
      Labels
      area:corearea:task-execution-interface-aip72AIP-72: Task Execution Interface (TEI) aka Task SDK
      Type
      No type
      Projects
        Milestone
        Relationships
        None yet
        Development
        No branches or pull requests
        Issue actions
        
, 'i');
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(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Allow retrieving Variable from Task Context · Issue #45421 · apache/airflow · GitHub
        Skip to content
        Allow retrieving Variable from Task Context #45421
        Closed
        #45431
        Closed
        Allow retrieving Variable from Task Context#45421
        #45431
        Assignees
        amoghrajesh
        Labels
        area:corearea:task-execution-interface-aip72AIP-72: Task Execution Interface (TEI) aka Task SDK
        Milestone
        Airflow 3.0.0
        Description
        @kaxil
        kaxil
        opened on Jan 6, 2025
        Similar to #45043, we need a similar thing for Task SDK to fetch Variable from Task Context.
        Requirement:
        • A minimal Variable user-facing object in Task SDK definition for use in the DAG file
        • Logic to get Variable in the context.
        airflow/airflow/models/taskinstance.py
        
Lines 1043 to 1046
in
f03b1d4
        "var": { 
        "json": VariableAccessor(deserialize_json=True), 
        "value": VariableAccessor(deserialize_json=False), 
         }, 
        airflow/airflow/utils/context.py
        
Lines 117 to 138
in
f03b1d4
        classVariableAccessor: 
        """Wrapper to access Variable values in template."""
        def__init__(self, *, deserialize_json: bool) ->None: 
        self._deserialize_json=deserialize_json
        self.var: Any=None
        def__getattr__(self, key: str) ->Any: 
        fromairflow.models.variableimportVariable
        self.var=Variable.get(key, deserialize_json=self._deserialize_json) 
        returnself.var
        def__repr__(self) ->str: 
        returnstr(self.var) 
        defget(self, key, default: Any=NOTSET) ->Any: 
        fromairflow.models.variableimportVariable
        ifdefaultisNOTSET: 
        returnVariable.get(key, deserialize_json=self._deserialize_json) 
        returnVariable.get(key, default, deserialize_json=self._deserialize_json) 
        Now, we will need following 3 related objects:
        • VariableResponse is auto-generated and tightly coupled with the API schema.
        • VariableResult is runtime-specific and meant for internal communication between Supervisor & Task Runner.
        • Variable class here is where the public-facing, user-relevant aspects are exposed, hiding internal details.
        Metadata
        Metadata
        Assignees
        Labels
        area:corearea:task-execution-interface-aip72AIP-72: Task Execution Interface (TEI) aka Task SDK
        Type
        No type
        Projects
          Milestone
          Relationships
          None yet
          Development
          No branches or pull requests
          Issue actions
          
, 'i');
if (__m === '*' || __re.test(location.href)) {
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(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
Allow retrieving Variable from Task Context · Issue #45421 · apache/airflow · GitHub
          Skip to content
          Allow retrieving Variable from Task Context #45421
          Closed
          #45431
          Closed
          Allow retrieving Variable from Task Context#45421
          #45431
          Assignees
          amoghrajesh
          Labels
          area:corearea:task-execution-interface-aip72AIP-72: Task Execution Interface (TEI) aka Task SDK
          Milestone
          Airflow 3.0.0
          Description
          @kaxil
          kaxil
          opened on Jan 6, 2025
          Similar to #45043, we need a similar thing for Task SDK to fetch Variable from Task Context.
          Requirement:
          • A minimal Variable user-facing object in Task SDK definition for use in the DAG file
          • Logic to get Variable in the context.
          airflow/airflow/models/taskinstance.py
          
Lines 1043 to 1046
in
f03b1d4
          "var": { 
          "json": VariableAccessor(deserialize_json=True), 
          "value": VariableAccessor(deserialize_json=False), 
           }, 
          airflow/airflow/utils/context.py
          
Lines 117 to 138
in
f03b1d4
          classVariableAccessor: 
          """Wrapper to access Variable values in template."""
          def__init__(self, *, deserialize_json: bool) ->None: 
          self._deserialize_json=deserialize_json
          self.var: Any=None
          def__getattr__(self, key: str) ->Any: 
          fromairflow.models.variableimportVariable
          self.var=Variable.get(key, deserialize_json=self._deserialize_json) 
          returnself.var
          def__repr__(self) ->str: 
          returnstr(self.var) 
          defget(self, key, default: Any=NOTSET) ->Any: 
          fromairflow.models.variableimportVariable
          ifdefaultisNOTSET: 
          returnVariable.get(key, deserialize_json=self._deserialize_json) 
          returnVariable.get(key, default, deserialize_json=self._deserialize_json) 
          Now, we will need following 3 related objects:
          • VariableResponse is auto-generated and tightly coupled with the API schema.
          • VariableResult is runtime-specific and meant for internal communication between Supervisor & Task Runner.
          • Variable class here is where the public-facing, user-relevant aspects are exposed, hiding internal details.
          Metadata
          Metadata
          Assignees
          Labels
          area:corearea:task-execution-interface-aip72AIP-72: Task Execution Interface (TEI) aka Task SDK
          Type
          No type
          Projects
            Milestone
            Relationships
            None yet
            Development
            No branches or pull requests
            Issue actions
            
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
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})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Allow retrieving Variable from Task Context · Issue #45421 · apache/airflow · GitHub
            Skip to content
            Allow retrieving Variable from Task Context #45421
            Closed
            #45431
            Closed
            Allow retrieving Variable from Task Context#45421
            #45431
            Assignees
            amoghrajesh
            Labels
            area:corearea:task-execution-interface-aip72AIP-72: Task Execution Interface (TEI) aka Task SDK
            Milestone
            Airflow 3.0.0
            Description
            @kaxil
            kaxil
            opened on Jan 6, 2025
            Similar to #45043, we need a similar thing for Task SDK to fetch Variable from Task Context.
            Requirement:
            • A minimal Variable user-facing object in Task SDK definition for use in the DAG file
            • Logic to get Variable in the context.
            airflow/airflow/models/taskinstance.py
            
Lines 1043 to 1046
in
f03b1d4
            "var": { 
            "json": VariableAccessor(deserialize_json=True), 
            "value": VariableAccessor(deserialize_json=False), 
             }, 
            airflow/airflow/utils/context.py
            
Lines 117 to 138
in
f03b1d4
            classVariableAccessor: 
            """Wrapper to access Variable values in template."""
            def__init__(self, *, deserialize_json: bool) ->None: 
            self._deserialize_json=deserialize_json
            self.var: Any=None
            def__getattr__(self, key: str) ->Any: 
            fromairflow.models.variableimportVariable
            self.var=Variable.get(key, deserialize_json=self._deserialize_json) 
            returnself.var
            def__repr__(self) ->str: 
            returnstr(self.var) 
            defget(self, key, default: Any=NOTSET) ->Any: 
            fromairflow.models.variableimportVariable
            ifdefaultisNOTSET: 
            returnVariable.get(key, deserialize_json=self._deserialize_json) 
            returnVariable.get(key, default, deserialize_json=self._deserialize_json) 
            Now, we will need following 3 related objects:
            • VariableResponse is auto-generated and tightly coupled with the API schema.
            • VariableResult is runtime-specific and meant for internal communication between Supervisor & Task Runner.
            • Variable class here is where the public-facing, user-relevant aspects are exposed, hiding internal details.
            Metadata
            Metadata
            Assignees
            Labels
            area:corearea:task-execution-interface-aip72AIP-72: Task Execution Interface (TEI) aka Task SDK
            Type
            No type
            Projects
              Milestone
              Relationships
              None yet
              Development
              No branches or pull requests
              Issue actions
              
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
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(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Allow retrieving Variable from Task Context · Issue #45421 · apache/airflow · GitHub
              Skip to content
              Allow retrieving Variable from Task Context #45421
              Closed
              #45431
              Closed
              Allow retrieving Variable from Task Context#45421
              #45431
              Assignees
              amoghrajesh
              Labels
              area:corearea:task-execution-interface-aip72AIP-72: Task Execution Interface (TEI) aka Task SDK
              Milestone
              Airflow 3.0.0
              Description
              @kaxil
              kaxil
              opened on Jan 6, 2025
              Similar to #45043, we need a similar thing for Task SDK to fetch Variable from Task Context.
              Requirement:
              • A minimal Variable user-facing object in Task SDK definition for use in the DAG file
              • Logic to get Variable in the context.
              airflow/airflow/models/taskinstance.py
              
Lines 1043 to 1046
in
f03b1d4
              "var": { 
              "json": VariableAccessor(deserialize_json=True), 
              "value": VariableAccessor(deserialize_json=False), 
               }, 
              airflow/airflow/utils/context.py
              
Lines 117 to 138
in
f03b1d4
              classVariableAccessor: 
              """Wrapper to access Variable values in template."""
              def__init__(self, *, deserialize_json: bool) ->None: 
              self._deserialize_json=deserialize_json
              self.var: Any=None
              def__getattr__(self, key: str) ->Any: 
              fromairflow.models.variableimportVariable
              self.var=Variable.get(key, deserialize_json=self._deserialize_json) 
              returnself.var
              def__repr__(self) ->str: 
              returnstr(self.var) 
              defget(self, key, default: Any=NOTSET) ->Any: 
              fromairflow.models.variableimportVariable
              ifdefaultisNOTSET: 
              returnVariable.get(key, deserialize_json=self._deserialize_json) 
              returnVariable.get(key, default, deserialize_json=self._deserialize_json) 
              Now, we will need following 3 related objects:
              • VariableResponse is auto-generated and tightly coupled with the API schema.
              • VariableResult is runtime-specific and meant for internal communication between Supervisor & Task Runner.
              • Variable class here is where the public-facing, user-relevant aspects are exposed, hiding internal details.
              Metadata
              Metadata
              Assignees
              Labels
              area:corearea:task-execution-interface-aip72AIP-72: Task Execution Interface (TEI) aka Task SDK
              Type
              No type
              Projects
                Milestone
                Relationships
                None yet
                Development
                No branches or pull requests
                Issue actions
                
, 'i');
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Allow retrieving Variable from Task Context · Issue #45421 · apache/airflow · GitHub
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                Allow retrieving Variable from Task Context #45421
                Closed
                #45431
                Closed
                Allow retrieving Variable from Task Context#45421
                #45431
                Assignees
                amoghrajesh
                Labels
                area:corearea:task-execution-interface-aip72AIP-72: Task Execution Interface (TEI) aka Task SDK
                Milestone
                Airflow 3.0.0
                Description
                @kaxil
                kaxil
                opened on Jan 6, 2025
                Similar to #45043, we need a similar thing for Task SDK to fetch Variable from Task Context.
                Requirement:
                • A minimal Variable user-facing object in Task SDK definition for use in the DAG file
                • Logic to get Variable in the context.
                airflow/airflow/models/taskinstance.py
                
Lines 1043 to 1046
in
f03b1d4
                "var": { 
                "json": VariableAccessor(deserialize_json=True), 
                "value": VariableAccessor(deserialize_json=False), 
                 }, 
                airflow/airflow/utils/context.py
                
Lines 117 to 138
in
f03b1d4
                classVariableAccessor: 
                """Wrapper to access Variable values in template."""
                def__init__(self, *, deserialize_json: bool) ->None: 
                self._deserialize_json=deserialize_json
                self.var: Any=None
                def__getattr__(self, key: str) ->Any: 
                fromairflow.models.variableimportVariable
                self.var=Variable.get(key, deserialize_json=self._deserialize_json) 
                returnself.var
                def__repr__(self) ->str: 
                returnstr(self.var) 
                defget(self, key, default: Any=NOTSET) ->Any: 
                fromairflow.models.variableimportVariable
                ifdefaultisNOTSET: 
                returnVariable.get(key, deserialize_json=self._deserialize_json) 
                returnVariable.get(key, default, deserialize_json=self._deserialize_json) 
                Now, we will need following 3 related objects:
                • VariableResponse is auto-generated and tightly coupled with the API schema.
                • VariableResult is runtime-specific and meant for internal communication between Supervisor & Task Runner.
                • Variable class here is where the public-facing, user-relevant aspects are exposed, hiding internal details.
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