refact(audience-logs): Added and refactored audience evaluation logs.

pkg/config/datafileprojectconfig/mappers/condition_trees.go

@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright 2019, Optimizely, Inc. and contributors                        *
+ * Copyright 2019-2020, Optimizely, Inc. and contributors                   *
  *                                                                          *
  * Licensed under the Apache License, Version 2.0 (the "License");          *
  * you may not use this file except in compliance with the License.         *
@@ -127,6 +127,7 @@ func createLeafCondition(typedV map[string]interface{}, node *entities.TreeNode)
 	if err := json.Unmarshal(jsonBody, &condition); err != nil {
 		return err
 	}
+	condition.StringRepresentation = string(jsonBody)
 	node.Item = condition
 	return nil
 }

pkg/config/datafileprojectconfig/mappers/condition_trees_test.go

@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright 2019, Optimizely, Inc. and contributors                        *
+ * Copyright 2019-2020, Optimizely, Inc. and contributors                   *
  *                                                                          *
  * Licensed under the Apache License, Version 2.0 (the "License");          *
  * you may not use this file except in compliance with the License.         *
@@ -111,9 +111,10 @@ func TestBuildConditionTreeUsingDatafileAudienceConditions(t *testing.T) {
 						Nodes: []*entities.TreeNode{
 							{
 								Item: entities.Condition{
-									Name:  "s_foo",
-									Type:  "custom_attribute",
-									Value: "foo",
+									Name:                 "s_foo",
+									Type:                 "custom_attribute",
+									Value:                "foo",
+									StringRepresentation: `{"name":"s_foo","type":"custom_attribute","value":"foo"}`,
 								},
 							},
 						},
@@ -145,10 +146,11 @@ func TestBuildConditionTreeSimpleAudienceCondition(t *testing.T) {
 						Nodes: []*entities.TreeNode{
 							{
 								Item: entities.Condition{
-									Name:  "s_foo",
-									Match: "exact",
-									Type:  "custom_attribute",
-									Value: "foo",
+									Name:                 "s_foo",
+									Match:                "exact",
+									Type:                 "custom_attribute",
+									Value:                "foo",
+									StringRepresentation: `{"match":"exact","name":"s_foo","type":"custom_attribute","value":"foo"}`,
 								},
 							},
 						},
@@ -172,10 +174,11 @@ func TestBuildConditionTreeWithLeafNode(t *testing.T) {
 		Nodes: []*entities.TreeNode{
 			{
 				Item: entities.Condition{
-					Name:  "s_foo",
-					Match: "exact",
-					Type:  "custom_attribute",
-					Value: "foo",
+					Name:                 "s_foo",
+					Match:                "exact",
+					Type:                 "custom_attribute",
+					Value:                "foo",
+					StringRepresentation: `{"match":"exact","name":"s_foo","type":"custom_attribute","value":"foo"}`,
 				},
 			},
 		},

pkg/decision/evaluator/condition.go

@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright 2019, Optimizely, Inc. and contributors                        *
+ * Copyright 2019-2020, Optimizely, Inc. and contributors                   *
  *                                                                          *
  * Licensed under the Apache License, Version 2.0 (the "License");          *
  * you may not use this file except in compliance with the License.         *
@@ -22,6 +22,7 @@ import (
 
 	"github.com/optimizely/go-sdk/pkg/decision/evaluator/matchers"
 	"github.com/optimizely/go-sdk/pkg/entities"
+	"github.com/optimizely/go-sdk/pkg/logging"
 )
 
 const (
@@ -38,14 +39,23 @@ type ItemEvaluator interface {
 }
 
 // CustomAttributeConditionEvaluator evaluates conditions with custom attributes
-type CustomAttributeConditionEvaluator struct{}
+type CustomAttributeConditionEvaluator struct {
+	logger logging.OptimizelyLogProducer
+}
+
+// NewCustomAttributeConditionEvaluator creates a custom attribute condition
+func NewCustomAttributeConditionEvaluator(logger logging.OptimizelyLogProducer) *CustomAttributeConditionEvaluator {
+	return &CustomAttributeConditionEvaluator{logger: logger}
+}
 
 // Evaluate returns true if the given user's attributes match the condition
 func (c CustomAttributeConditionEvaluator) Evaluate(condition entities.Condition, condTreeParams *entities.TreeParameters) (bool, error) {
 	// We should only be evaluating custom attributes
 
 	if condition.Type != customAttributeType {
-		return false, fmt.Errorf(`unable to evaluator condition of type "%s"`, condition.Type)
+
+		c.logger.Warning(fmt.Sprintf(string(logging.UnknownConditionType), condition.StringRepresentation))
+		return false, fmt.Errorf(`unable to evaluate condition of type "%s"`, condition.Type)
 	}
 
 	var matcher matchers.Matcher
@@ -57,6 +67,7 @@ func (c CustomAttributeConditionEvaluator) Evaluate(condition entities.Condition
 	case exactMatchType:
 		matcher = matchers.ExactMatcher{
 			Condition: condition,
+			Logger:    c.logger,
 		}
 	case existsMatchType:
 		matcher = matchers.ExistsMatcher{
@@ -65,16 +76,20 @@ func (c CustomAttributeConditionEvaluator) Evaluate(condition entities.Condition
 	case ltMatchType:
 		matcher = matchers.LtMatcher{
 			Condition: condition,
+			Logger:    c.logger,
 		}
 	case gtMatchType:
 		matcher = matchers.GtMatcher{
 			Condition: condition,
+			Logger:    c.logger,
 		}
 	case substringMatchType:
 		matcher = matchers.SubstringMatcher{
 			Condition: condition,
+			Logger:    c.logger,
 		}
 	default:
+		c.logger.Warning(fmt.Sprintf(string(logging.UnknownMatchType), condition.StringRepresentation))
 		return false, fmt.Errorf(`invalid Condition matcher "%s"`, condition.Match)
 	}
 
@@ -84,20 +99,28 @@ func (c CustomAttributeConditionEvaluator) Evaluate(condition entities.Condition
 }
 
 // AudienceConditionEvaluator evaluates conditions with audience condition
-type AudienceConditionEvaluator struct{}
+type AudienceConditionEvaluator struct {
+	logger logging.OptimizelyLogProducer
+}
+
+// NewAudienceConditionEvaluator creates a audience condition evaluator
+func NewAudienceConditionEvaluator(logger logging.OptimizelyLogProducer) *AudienceConditionEvaluator {
+	return &AudienceConditionEvaluator{logger: logger}
+}
 
 // Evaluate returns true if the given user's attributes match the condition
 func (c AudienceConditionEvaluator) Evaluate(audienceID string, condTreeParams *entities.TreeParameters) (bool, error) {
 
 	if audience, ok := condTreeParams.AudienceMap[audienceID]; ok {
+		c.logger.Debug(fmt.Sprintf(string(logging.AudienceEvaluationStarted), audienceID))
 		condTree := audience.ConditionTree
-		conditionTreeEvaluator := NewMixedTreeEvaluator()
+		conditionTreeEvaluator := NewMixedTreeEvaluator(c.logger)
 		retValue, isValid := conditionTreeEvaluator.Evaluate(condTree, condTreeParams)
 		if !isValid {
 			return false, fmt.Errorf(`an error occurred while evaluating nested tree for audience ID "%s"`, audienceID)
 		}
+		c.logger.Debug(fmt.Sprintf(string(logging.AudienceEvaluatedTo), audienceID, retValue))
 		return retValue, nil
-
 	}
 
 	return false, fmt.Errorf(`unable to evaluate nested tree for audience ID "%s"`, audienceID)

pkg/decision/evaluator/condition_test.go

@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright 2019, Optimizely, Inc. and contributors                        *
+ * Copyright 2019-2020, Optimizely, Inc. and contributors                   *
  *                                                                          *
  * Licensed under the Apache License, Version 2.0 (the "License");          *
  * you may not use this file except in compliance with the License.         *
@@ -17,14 +17,26 @@
 package evaluator
 
 import (
+	"fmt"
 	"testing"
 
 	"github.com/optimizely/go-sdk/pkg/entities"
-	"github.com/stretchr/testify/assert"
+	"github.com/optimizely/go-sdk/pkg/logging"
+	"github.com/stretchr/testify/suite"
 )
 
-func TestCustomAttributeConditionEvaluator(t *testing.T) {
-	conditionEvaluator := CustomAttributeConditionEvaluator{}
+type ConditionTestSuite struct {
+	suite.Suite
+	mockLogger         *MockLogger
+	conditionEvaluator *CustomAttributeConditionEvaluator
+}
+
+func (s *ConditionTestSuite) SetupTest() {
+	s.mockLogger = new(MockLogger)
+	s.conditionEvaluator = NewCustomAttributeConditionEvaluator(s.mockLogger)
+}
+
+func (s *ConditionTestSuite) TestCustomAttributeConditionEvaluator() {
 	condition := entities.Condition{
 		Match: "exact",
 		Value: "foo",
@@ -40,21 +52,20 @@ func TestCustomAttributeConditionEvaluator(t *testing.T) {
 	}
 
 	condTreeParams := entities.NewTreeParameters(&user, map[string]entities.Audience{})
-	result, _ := conditionEvaluator.Evaluate(condition, condTreeParams)
-	assert.Equal(t, result, true)
+	result, _ := s.conditionEvaluator.Evaluate(condition, condTreeParams)
+	s.Equal(result, true)
 
 	// Test condition fails
 	user = entities.UserContext{
 		Attributes: map[string]interface{}{
 			"string_foo": "not_foo",
 		},
 	}
-	result, _ = conditionEvaluator.Evaluate(condition, condTreeParams)
-	assert.Equal(t, result, false)
+	result, _ = s.conditionEvaluator.Evaluate(condition, condTreeParams)
+	s.Equal(result, false)
 }
 
-func TestCustomAttributeConditionEvaluatorWithoutMatchType(t *testing.T) {
-	conditionEvaluator := CustomAttributeConditionEvaluator{}
+func (s *ConditionTestSuite) TestCustomAttributeConditionEvaluatorWithoutMatchType() {
 	condition := entities.Condition{
 		Value: "foo",
 		Name:  "string_foo",
@@ -69,15 +80,62 @@ func TestCustomAttributeConditionEvaluatorWithoutMatchType(t *testing.T) {
 	}
 
 	condTreeParams := entities.NewTreeParameters(&user, map[string]entities.Audience{})
-	result, _ := conditionEvaluator.Evaluate(condition, condTreeParams)
-	assert.Equal(t, result, true)
+	result, _ := s.conditionEvaluator.Evaluate(condition, condTreeParams)
+	s.Equal(result, true)
 
 	// Test condition fails
 	user = entities.UserContext{
 		Attributes: map[string]interface{}{
 			"string_foo": "not_foo",
 		},
 	}
-	result, _ = conditionEvaluator.Evaluate(condition, condTreeParams)
-	assert.Equal(t, result, false)
+	result, _ = s.conditionEvaluator.Evaluate(condition, condTreeParams)
+	s.Equal(result, false)
+}
+
+func (s *ConditionTestSuite) TestCustomAttributeConditionEvaluatorWithInvalidMatchType() {
+	condition := entities.Condition{
+		Value: "foo",
+		Name:  "string_foo",
+		Type:  "custom_attribute",
+		Match: "invalid",
+	}
+
+	// Test condition fails
+	user := entities.UserContext{
+		Attributes: map[string]interface{}{
+			"string_foo": "foo",
+		},
+	}
+
+	condTreeParams := entities.NewTreeParameters(&user, map[string]entities.Audience{})
+	s.mockLogger.On("Warning", fmt.Sprintf(string(logging.UnknownMatchType), ""))
+	result, _ := s.conditionEvaluator.Evaluate(condition, condTreeParams)
+	s.Equal(result, false)
+	s.mockLogger.AssertExpectations(s.T())
+}
+
+func (s *ConditionTestSuite) TestCustomAttributeConditionEvaluatorWithUnknownType() {
+	condition := entities.Condition{
+		Value: "foo",
+		Name:  "string_foo",
+		Type:  "",
+	}
+
+	// Test condition fails
+	user := entities.UserContext{
+		Attributes: map[string]interface{}{
+			"string_foo": "foo",
+		},
+	}
+
+	condTreeParams := entities.NewTreeParameters(&user, map[string]entities.Audience{})
+	s.mockLogger.On("Warning", fmt.Sprintf(string(logging.UnknownConditionType), ""))
+	result, _ := s.conditionEvaluator.Evaluate(condition, condTreeParams)
+	s.Equal(result, false)
+	s.mockLogger.AssertExpectations(s.T())
+}
+
+func TestConditionTestSuite(t *testing.T) {
+	suite.Run(t, new(ConditionTestSuite))
 }

pkg/decision/evaluator/condition_tree.go

@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright 2019, Optimizely, Inc. and contributors                        *
+ * Copyright 2019-2020, Optimizely, Inc. and contributors                   *
  *                                                                          *
  * Licensed under the Apache License, Version 2.0 (the "License");          *
  * you may not use this file except in compliance with the License.         *
@@ -21,6 +21,7 @@ import (
 	"fmt"
 
 	"github.com/optimizely/go-sdk/pkg/entities"
+	"github.com/optimizely/go-sdk/pkg/logging"
 )
 
 const customAttributeType = "custom_attribute"
@@ -41,11 +42,12 @@ type TreeEvaluator interface {
 
 // MixedTreeEvaluator evaluates a tree of mixed node types (condition node or audience nodes)
 type MixedTreeEvaluator struct {
+	logger logging.OptimizelyLogProducer
 }
 
 // NewMixedTreeEvaluator creates a condition tree evaluator with the out-of-the-box condition evaluators
-func NewMixedTreeEvaluator() *MixedTreeEvaluator {
-	return &MixedTreeEvaluator{}
+func NewMixedTreeEvaluator(logger logging.OptimizelyLogProducer) *MixedTreeEvaluator {
+	return &MixedTreeEvaluator{logger: logger}
 }
 
 // Evaluate returns whether the userAttributes satisfy the given condition tree and the evaluation of the condition is valid or not (to handle null bubbling)
@@ -66,10 +68,10 @@ func (c MixedTreeEvaluator) Evaluate(node *entities.TreeNode, condTreeParams *en
 	var err error
 	switch v := node.Item.(type) {
 	case entities.Condition:
-		evaluator := CustomAttributeConditionEvaluator{}
+		evaluator := NewCustomAttributeConditionEvaluator(c.logger)
 		result, err = evaluator.Evaluate(node.Item.(entities.Condition), condTreeParams)
 	case string:
-		evaluator := AudienceConditionEvaluator{}
+		evaluator := NewAudienceConditionEvaluator(c.logger)
 		result, err = evaluator.Evaluate(node.Item.(string), condTreeParams)
 	default:
 		fmt.Printf("I don't know about type %T!\n", v)