Added all required dependencies

vendor/github.com/go-macaron/toolbox/healthcheck.go

@@ -0,0 +1,83 @@
+// 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()
+}