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feat: move to a more generic health endpoint in conjunction with isle…
…ader check
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Original file line number | Diff line number | Diff line change |
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/* | ||
Copyright NetFoundry Inc. | ||
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 | ||
https://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. | ||
*/ | ||
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package webapis | ||
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import ( | ||
"encoding/json" | ||
"fmt" | ||
gosundheit "github.com/AppsFlyer/go-sundheit" | ||
"github.com/openziti/xweb/v2" | ||
"github.com/openziti/ziti/controller/env" | ||
"github.com/sirupsen/logrus" | ||
"net/http" | ||
"strings" | ||
"time" | ||
) | ||
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var _ xweb.ApiHandlerFactory = &ControllerHealthCheckApiFactory{} | ||
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type ControllerHealthCheckApiFactory struct { | ||
appEnv *env.AppEnv | ||
healthChecker gosundheit.Health | ||
} | ||
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func (factory ControllerHealthCheckApiFactory) Validate(config *xweb.InstanceConfig) error { | ||
return nil | ||
} | ||
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func NewControllerHealthCheckApiFactory(appEnv *env.AppEnv, healthChecker gosundheit.Health) *ControllerHealthCheckApiFactory { | ||
return &ControllerHealthCheckApiFactory{ | ||
appEnv: appEnv, | ||
healthChecker: healthChecker, | ||
} | ||
} | ||
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func (factory ControllerHealthCheckApiFactory) Binding() string { | ||
return ControllerHealthCheckApiBinding | ||
} | ||
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func (factory ControllerHealthCheckApiFactory) New(_ *xweb.ServerConfig, options map[interface{}]interface{}) (xweb.ApiHandler, error) { | ||
return &ControllerHealthCheckApiHandler{ | ||
healthChecker: factory.healthChecker, | ||
appEnv: factory.appEnv, | ||
options: options, | ||
}, nil | ||
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} | ||
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type ControllerHealthCheckApiHandler struct { | ||
handler http.Handler | ||
options map[interface{}]interface{} | ||
appEnv *env.AppEnv | ||
healthChecker gosundheit.Health | ||
} | ||
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func (self ControllerHealthCheckApiHandler) Binding() string { | ||
return ControllerHealthCheckApiBinding | ||
} | ||
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func (self ControllerHealthCheckApiHandler) Options() map[interface{}]interface{} { | ||
return self.options | ||
} | ||
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func (self ControllerHealthCheckApiHandler) RootPath() string { | ||
return "/controller/health" | ||
} | ||
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func (self ControllerHealthCheckApiHandler) IsHandler(r *http.Request) bool { | ||
return strings.HasPrefix(r.URL.Path, self.RootPath()) | ||
} | ||
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func (self *ControllerHealthCheckApiHandler) ServeHTTP(w http.ResponseWriter, request *http.Request) { | ||
output := map[string]interface{}{} | ||
output["meta"] = map[string]interface{}{} | ||
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data := map[string]interface{}{} | ||
output["data"] = data | ||
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w.Header().Set("Content-Type", "application/json") | ||
encoder := json.NewEncoder(w) | ||
encoder.SetIndent("", " ") | ||
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results, healthy := self.healthChecker.Results() | ||
isLeader := self.appEnv.GetHostController().IsRaftLeader() | ||
isRaftEnabled := self.appEnv.GetHostController().IsRaftEnabled() | ||
raftData := map[string]interface{}{} | ||
data["healthy"] = healthy | ||
raftData["isLeader"] = isLeader | ||
raftData["isRaftEnabled"] = isRaftEnabled | ||
output["raft"] = raftData | ||
var checks []map[string]interface{} | ||
shortFormat := request.URL.Query().Get("type") == "short" | ||
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for id, result := range results { | ||
check := map[string]interface{}{} | ||
checks = append(checks, check) | ||
check["id"] = id | ||
check["healthy"] = result.IsHealthy() | ||
if !shortFormat { | ||
check["lastCheckDuration"] = fmt.Sprintf("%v", result.Duration) | ||
check["lastCheckTime"] = result.Timestamp.UTC().Format(time.RFC3339) | ||
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if result.Error != nil { | ||
check["err"] = result.Error | ||
check["consecutiveFailures"] = result.ContiguousFailures | ||
} | ||
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if result.TimeOfFirstFailure != nil { | ||
check["failingSince"] = result.TimeOfFirstFailure.UTC().Format(time.RFC3339) | ||
} | ||
if result.Details != "didn't run yet" { | ||
check["details"] = result.Details | ||
} | ||
} | ||
} | ||
data["checks"] = checks | ||
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if !isLeader && isRaftEnabled { | ||
w.WriteHeader(429) | ||
} | ||
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if err := encoder.Encode(output); err != nil { | ||
logrus.WithError(err).Error("failure encoding health check results") | ||
} | ||
} | ||
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func (self ControllerHealthCheckApiHandler) IsDefault() bool { | ||
return false | ||
} |
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