blob: 0014dd67e92f920bbf7a645f4fa81cafacc0ec25 [file] [log] [blame]
// Copyright Istio 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.
package compare
import (
"bytes"
"fmt"
"time"
)
import (
"github.com/pmezard/go-difflib/difflib"
)
import (
"github.com/apache/dubbo-go-pixiu/pkg/util/protomarshal"
)
// RouteDiff prints a diff between Istiod and Envoy routes to the passed writer
func (c *Comparator) RouteDiff() error {
envoyBytes, istiodBytes := &bytes.Buffer{}, &bytes.Buffer{}
envoyRouteDump, err := c.envoy.GetDynamicRouteDump(true)
if err != nil {
envoyBytes.WriteString(err.Error())
} else {
envoy, err := protomarshal.ToJSONWithIndent(envoyRouteDump, " ")
if err != nil {
return err
}
envoyBytes.WriteString(envoy)
}
istiodRouteDump, err := c.istiod.GetDynamicRouteDump(true)
if err != nil {
istiodBytes.WriteString(err.Error())
} else {
istiod, err := protomarshal.ToJSONWithIndent(istiodRouteDump, " ")
if err != nil {
return err
}
istiodBytes.WriteString(istiod)
}
diff := difflib.UnifiedDiff{
FromFile: "Istiod Routes",
A: difflib.SplitLines(istiodBytes.String()),
ToFile: "Envoy Routes",
B: difflib.SplitLines(envoyBytes.String()),
Context: c.context,
}
text, err := difflib.GetUnifiedDiffString(diff)
if err != nil {
return err
}
lastUpdatedStr := ""
if lastUpdated, err := c.envoy.GetLastUpdatedDynamicRouteTime(); err != nil {
return err
} else if lastUpdated != nil {
loc, err := time.LoadLocation(c.location)
if err != nil {
loc, _ = time.LoadLocation("UTC")
}
lastUpdatedStr = fmt.Sprintf(" (RDS last loaded at %s)", lastUpdated.In(loc).Format(time.RFC1123))
}
if text != "" {
fmt.Fprintf(c.w, "Routes Don't Match%s\n", lastUpdatedStr)
fmt.Fprintln(c.w, text)
} else {
fmt.Fprintf(c.w, "Routes Match%s\n", lastUpdatedStr)
}
return nil
}