✨ add analysis insights (konveyor#618)

*What creates Insights?*

_Rules that do not have an effort value defined or have an effort value
of 0, will generate insights._

Depending on what rule actions they define, the output will look
different. See following table for all scenarios:

| <rule>.effort | <rule>.tag | <rule>.message |  Description |
| --- | --- | --- | --- |
| 0 | Defined | Not Defined | Rule creates _tags_ and an _insight_.
Insight does not contain _message_. |
| 0 | Defined | Defined | Rule creates _tags_ and an _insight_. Insight
contains _message_. |
| 0 | Not Defined | Defined | Rule creates an _insight_. Insight
contains _message_. |
| 1 | Defined | Defined | Rule creates _tags_ and a _violation_. No
insights here as effort is non-zero. |

See
https://github.com/konveyor/enhancements/edit/master/enhancements/analysis-insights/README.md

Signed-off-by: Pranav Gaikwad <pgaikwad@redhat.com>

engine/engine.go

@@ -150,6 +150,7 @@ func (r *ruleEngine) createRuleSet(ruleSet RuleSet) *konveyor.RuleSet {
 		Description: ruleSet.Description,
 		Tags:        []string{},
 		Violations:  map[string]konveyor.Violation{},
+		Insights:    map[string]konveyor.Violation{},
 		Errors:      map[string]string{},
 		Unmatched:   []string{},
 		Skipped:     []string{},
@@ -204,12 +205,17 @@ func (r *ruleEngine) RunRules(ctx context.Context, ruleSets []RuleSet, selectors
 							}
 						} else {
 							atomic.AddInt32(&matchedRules, 1)
-
 							rs, ok := mapRuleSets[response.RuleSetName]
 							if !ok {
 								r.logger.Info("this should never happen that we don't find the ruleset")
+								return
+							}
+							// when a rule has 0 effort, we should create an insight instead
+							if response.Rule.Effort == nil || *response.Rule.Effort == 0 {
+								rs.Insights[response.Rule.RuleID] = violation
+							} else {
+								rs.Violations[response.Rule.RuleID] = violation
 							}
-							rs.Violations[response.Rule.RuleID] = violation
 						}
 					} else {
 						atomic.AddInt32(&unmatchedRules, 1)
@@ -291,9 +297,9 @@ func (r *ruleEngine) filterRules(ruleSets []RuleSet, selectors ...RuleSelector)
 					rule:        rule,
 					ruleSetName: ruleSet.Name,
 				})
-				// if both message and tag are set
-				// split message part into a new rule
-				if rule.Perform.Message.Text != nil {
+				// if both message and tag are set, split message part into a new rule if effort is non-zero
+				// if effort is zero, we do not want to create a violation but only tag and an insight
+				if rule.Perform.Message.Text != nil && rule.Effort != nil && *rule.Effort != 0 {
 					rule.Perform.Tag = nil
 					otherRules = append(
 						otherRules,
@@ -376,6 +382,20 @@ func (r *ruleEngine) runTaggingRules(ctx context.Context, infoRules []ruleMessag
 				}
 				mapRuleSets[ruleMessage.ruleSetName] = rs
 			}
+			// create an insight for this tag
+			violation, err := r.createViolation(ctx, response, rule)
+			if err != nil {
+				r.logger.Error(err, "unable to create violation from response", "ruleID", rule.RuleID)
+			}
+			if rs, ok := mapRuleSets[ruleMessage.ruleSetName]; ok {
+				violation.Effort = nil
+				violation.Category = nil
+				// we need to tie these incidents back to tags that created them
+				for tag := range tags {
+					violation.Labels = append(violation.Labels, fmt.Sprintf("tag=%s", tag))
+				}
+				rs.Insights[rule.RuleID] = violation
+			}
 		} else {
 			r.logger.Info("info rule not matched", "rule", rule.RuleID)
 			if rs, ok := mapRuleSets[ruleMessage.ruleSetName]; ok {

output/v1/konveyor/violations.go

@@ -28,6 +28,11 @@ type RuleSet struct {
 	// their respective generated violations.
 	Violations map[string]Violation `yaml:"violations,omitempty" json:"violations,omitempty"`
 
+	// Insights is a map containing violations generated for informational rules
+	// in a ruleset. These rules do not have an effort. They exist to provide
+	// additional information about a tag.
+	Insights map[string]Violation `yaml:"insights,omitempty" json:"insights,omitempty"`
+
 	// Errors is a map containing errors generated during evaluation
 	// of rules in this ruleset. Keys are rule IDs, values are
 	// their respective generated errors.

provider_container_settings.json

@@ -118,7 +118,6 @@
         "name": "builtin",
         "initConfig": [
             {"location": "examples/java/"},
-            {"location": "examples/python/"},
             {"location": "examples/golang/"},
             {"location": "examples/customers-tomcat-legacy/"},
             {

provider_local_external_images.json

@@ -119,7 +119,6 @@
         "initConfig": [
             {"location": "external-providers/java-external-provider/examples/java"},
             {"location": "external-providers/java-external-provider/examples/customers-tomcat-legacy"},
-            {"location": "examples/python/"},
             {"location": "examples/golang/"},
             {
                 "location": "examples/builtin/", 

provider_pod_local_settings.json

@@ -118,7 +118,6 @@
         "name": "builtin",
         "initConfig": [
             {"location": "examples/java/"},
-            {"location": "examples/python/"},
             {"location": "examples/golang/"},
             {"location": "examples/customers-tomcat-legacy/"},
             {

rule-example.yaml

@@ -14,17 +14,20 @@
       pattern: "*.go"
 - message: not any go files
   ruleID: file-002
+  effort: 1
   when:
     builtin.file:
       pattern:  "*.go"
     not: true
 - message: POM XML dependencies - '{{{matchingXML}}}'
   ruleID: xml-pom-001
+  effort: 1
   when:
     builtin.xml:
       xpath: "//dependencies/dependency"
 - message: '{{{matchingXML}}}'
   ruleID: chain-pom-001
+  effort: 1
   when:
     or:
     - builtin.xml:
@@ -37,6 +40,7 @@
       ignore: true
 - message: apiextensions/v1beta1/customresourcedefinitions is deprecated, apiextensions/v1/customresourcedefinitions should be used instead
   ruleID: lang-ref-001
+  effort: 1
   when:
     or:
     - java.referenced:
@@ -46,11 +50,13 @@
         pattern: "v1beta1.CustomResourceDefinition"
 - message: 'golang apiextensions/v1/customresourcedefinitions found {{file}}:{{lineNumber}}'
   ruleID: go-lang-ref-001
+  effort: 1
   when:
     go.referenced:
         pattern: "v1beta1.CustomResourceDefinition"
 - message: testing nested conditions
   ruleID: lang-ref-002
+  effort: 1
   when:
     # This is purposfully failing, the golang reference will not
     # find anything. testing that `and` will work correctly
@@ -62,6 +68,7 @@
           location: TYPE
 - message: 'java found apiextensions/v1/customresourcedefinitions found {{file}}:{{lineNumber}}'
   ruleID: lang-ref-003
+  effort: 1
   when:
     java.referenced:
       pattern: "*apiextensions.v1beta1.CustomResourceDefinition*"
@@ -109,6 +116,7 @@
       - Java
 - message: "dependency {{name}} with {{version}} is bad and you should feel bad for using it"
   ruleID: golang-gomod-dependencies
+  effort: 1
   when:
     and:
       - go.dependency:
@@ -123,6 +131,7 @@
           upperbound: v4.2.2
 - message: "dependency {{name}} with {{version}} is bad and you should feel bad for using it"
   ruleID: java-pomxml-dependencies
+  effort: 1
   when:
     and:
       - java.dependency:
@@ -134,6 +143,7 @@
           lowerbound: 5.0.100
 - message: "found generic call"
   ruleID: lang-ref-004
+  effort: 1
   customVariables:
    - pattern: '([A-z]+)\.get\(\)'
      name: VariableName
@@ -143,6 +153,7 @@
       pattern: com.example.apps.GenericClass.get
 - message: condition entries should evaluate out of order
   ruleID: singleton-sessionbean-00001
+  effort: 1
   when:
     or:
     - as: sessionbean
@@ -156,6 +167,7 @@
         pattern: javax.ejb.Singleton
 - message: condition entries should evaluate in order
   ruleID: singleton-sessionbean-00002
+  effort: 1
   when:
     or:
     - as: singleton
@@ -169,12 +181,14 @@
         pattern: javax.ejb.SessionBean
 - message: "error test"
   ruleID: error-rule-001
+  effort: 1
   when:
     builtin.xml:
       xpath:
         invalid-query: "test"
 - message: "JBoss 5.x EAR descriptor (jboss-app.xml) was found with public-id"
   ruleID: jboss-eap5-7-xml-02000
+  effort: 1
   when:
     builtin.xmlPublicID:
       regex: .*JBoss.+DTD Java EE.+5.*
@@ -187,23 +201,27 @@
     - Golang
 - message: "Found usage of openjdk base image"
   ruleID: filecontent-codesnip-test
+  effort: 1
   when:
     builtin.filecontent:
       pattern: "^FROM.*openjdk-11.*"
       filePattern: "Dockerfile"
 
 - message: python sample rule 001
   ruleID: python-sample-rule-001
+  effort: 1
   when:
     python.referenced:
       pattern: "hello_world"
 - message: python sample rule 002
   ruleID: python-sample-rule-002
+  effort: 1
   when:
     python.referenced:
       pattern: "speak"
 - message: python sample rule 003
   ruleID: python-sample-rule-003
+  effort: 1
   when:
     python.referenced:
       pattern: "create_custom_resource_definition"
@@ -235,6 +253,7 @@
   description: "Test code snippets when match is a key of a XML node"
   message: "The code snippet should point to <beans> in the beans.xml file"
   ruleID: xml-test-key-match
+  effort: 1
   when:
     builtin.xml:
       filepaths:
@@ -269,6 +288,7 @@
     We are filtering some out using includedPaths setting.
   message: Only incidents in dir-0/test.json should be found
   ruleID: builtin-inclusion-test-json
+  effort: 1
   when:
     and:
     - builtin.json:
@@ -283,6 +303,7 @@
     We are filtering some out using includedPaths setting.
   message: Only incidents in dir-0/test.xml should be found
   ruleID: builtin-inclusion-test-xml
+  effort: 1
   when:
     and:
     - builtin.xml: