forked from Shiloh/githaven
84 lines
2.1 KiB
Go
84 lines
2.1 KiB
Go
// Copyright 2013 Beego Authors
|
|
// Copyright 2014 The Macaron 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 toolbox
|
|
|
|
import (
|
|
"bytes"
|
|
)
|
|
|
|
// HealthChecker represents a health check instance.
|
|
type HealthChecker interface {
|
|
Desc() string
|
|
Check() error
|
|
}
|
|
|
|
// HealthCheckFunc represents a callable function for health check.
|
|
type HealthCheckFunc func() error
|
|
|
|
// HealthCheckFunc represents a callable function for health check with description.
|
|
type HealthCheckFuncDesc struct {
|
|
Desc string
|
|
Func HealthCheckFunc
|
|
}
|
|
|
|
type healthCheck struct {
|
|
desc string
|
|
HealthChecker
|
|
check HealthCheckFunc // Not nil if add job as a function.
|
|
}
|
|
|
|
// AddHealthCheck adds new health check job.
|
|
func (t *toolbox) AddHealthCheck(hc HealthChecker) {
|
|
t.healthCheckJobs = append(t.healthCheckJobs, &healthCheck{
|
|
HealthChecker: hc,
|
|
})
|
|
}
|
|
|
|
// AddHealthCheckFunc adds a function as a new health check job.
|
|
func (t *toolbox) AddHealthCheckFunc(desc string, fn HealthCheckFunc) {
|
|
t.healthCheckJobs = append(t.healthCheckJobs, &healthCheck{
|
|
desc: desc,
|
|
check: fn,
|
|
})
|
|
}
|
|
|
|
func (t *toolbox) handleHealthCheck() string {
|
|
if len(t.healthCheckJobs) == 0 {
|
|
return "no health check jobs"
|
|
}
|
|
|
|
var buf bytes.Buffer
|
|
var err error
|
|
for _, job := range t.healthCheckJobs {
|
|
buf.WriteString("* ")
|
|
if job.check != nil {
|
|
buf.WriteString(job.desc)
|
|
err = job.check()
|
|
} else {
|
|
buf.WriteString(job.Desc())
|
|
err = job.Check()
|
|
}
|
|
buf.WriteString(": ")
|
|
if err == nil {
|
|
buf.WriteString("OK")
|
|
} else {
|
|
buf.WriteString(err.Error())
|
|
}
|
|
buf.WriteString("\n")
|
|
}
|
|
return buf.String()
|
|
}
|