BREAKING: migrate to a new JSON schema (#782)

* feat: introduce a new JSON schema

* test: update

* chore(mod): update fanal

* refactor: add a comment

* test(report): fix

* refactor(writer): add omitempty

* refactor: replace url

* test(scanner): fix

pkg/report/json.go

@@ -4,8 +4,11 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
+	"os"
 
 	"golang.org/x/xerrors"
+
+	"github.com/aquasecurity/trivy/pkg/log"
 )
 
 // JSONWriter implements result Writer
@@ -14,8 +17,16 @@ type JSONWriter struct {
 }
 
 // Write writes the results in JSON format
-func (jw JSONWriter) Write(results Results) error {
-	output, err := json.MarshalIndent(results, "", "  ")
+func (jw JSONWriter) Write(report Report) error {
+	var v interface{} = report
+	if os.Getenv("TRIVY_NEW_JSON_SCHEMA") == "" {
+		// After migrating to the new JSON schema, TRIVY_NEW_JSON_SCHEMA will be removed.
+		log.Logger.Warnf("DEPRECATED: the current JSON schema is deprecated, check %s for more information.",
+			"https://github.com/aquasecurity/trivy/discussions/1050")
+		v = report.Results
+	}
+
+	output, err := json.MarshalIndent(v, "", "  ")
 	if err != nil {
 		return xerrors.Errorf("failed to marshal json: %w", err)
 	}