feat(*): add v0.8 action data filter's condition field

Signed-off-by: LiHeng.Teh <Liheng.Teh@acronis.com>

model/action.go

@@ -37,6 +37,8 @@ type Action struct {
  RetryableErrors []string `json:"retryableErrors,omitempty" validate:"omitempty,min=1"`
  // Action data filter
  ActionDataFilter ActionDataFilter `json:"actionDataFilter,omitempty"`
+ // Workflow expression evaluated against state data. Must evaluate to true or false
+ Condition string `json:"condition,omitempty"`
 }
 
 // FunctionRef ...

parser/parser_test.go

@@ -82,6 +82,10 @@ func TestFromFile(t *testing.T) {
  assert.IsType(t, &model.DataBasedSwitchState{}, w.States[0])
  assert.IsType(t, &model.EventBasedSwitchState{}, w.States[1])
  },
+ "./testdata/workflows/conditionbasedstate.yaml": func(t *testing.T, w *model.Workflow) {
+ operationState := w.States[0].(*model.OperationState)
+ assert.Equal(t, "${ .applicants | .age < 18 }", operationState.Actions[0].Condition)
+ },
  "./testdata/workflows/eventbasedgreeting.sw.json": func(t *testing.T, w *model.Workflow) {
  assert.Equal(t, "GreetingEvent", w.Events[0].Name)
  assert.IsType(t, &model.EventState{}, w.States[0])

parser/testdata/workflows/conditionbasedstate.yaml

@@ -0,0 +1,40 @@
+# Copyright 2020 The Serverless Workflow Specification Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+id: greeting
+version: '1.0'
+name: Greeting Workflow
+description: Greet Someone
+specVersion: "0.8"
+start:
+ stateName: Greet
+functions:
+ - name: greetingFunction
+ operation: file://myapis/greetingapis.json#greeting
+states:
+ - name: Greet
+ type: operation
+ actionMode: sequential
+ actions:
+ - functionRef:
+ refName: greetingFunction
+ parameters:
+ name: "${ .greet | .name }"
+ actionDataFilter:
+ toStateData: "${ .payload | .greeting }"
+ condition: "${ .applicants | .age < 18 }"
+ stateDataFilter:
+ dataOutputPath: "${ .greeting }"
+ end:
+ terminate: true