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testingutil.go
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testingutil.go
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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
//Collection of resources for teting mesos artifacts.
package testutil
import (
"bytes"
"fmt"
"github.com/gogo/protobuf/proto"
log "github.com/golang/glog"
"github.com/mesos/mesos-go/upid"
"github.com/stretchr/testify/assert"
"io"
"net"
"net/http"
"net/http/httptest"
"os"
"reflect"
"testing"
)
//MockMesosHttpProcess represents a remote http process: master or slave.
type MockMesosHttpServer struct {
PID *upid.UPID
Addr string
server *httptest.Server
t *testing.T
when map[string]http.HandlerFunc
}
type When interface {
Do(http.HandlerFunc)
}
type WhenFunc func(http.HandlerFunc)
func (w WhenFunc) Do(f http.HandlerFunc) {
w(f)
}
func (m *MockMesosHttpServer) On(uri string) When {
log.V(2).Infof("when %v do something special", uri)
return WhenFunc(func(f http.HandlerFunc) {
log.V(2).Infof("registered callback for %v", uri)
m.when[uri] = f
})
}
func NewMockMasterHttpServer(t *testing.T, handler func(rsp http.ResponseWriter, req *http.Request)) *MockMesosHttpServer {
var server *httptest.Server
when := make(map[string]http.HandlerFunc)
stateHandler := func(rsp http.ResponseWriter, req *http.Request) {
if "/state.json" == req.RequestURI {
state := fmt.Sprintf(`{ "leader": "master@%v" }`, server.Listener.Addr())
log.V(1).Infof("returning JSON %v", state)
io.WriteString(rsp, state)
} else if f, found := when[req.RequestURI]; found {
f(rsp, req)
} else {
handler(rsp, req)
}
}
server = httptest.NewServer(http.HandlerFunc(stateHandler))
assert.NotNil(t, server)
addr := server.Listener.Addr().String()
pid, err := upid.Parse("master@" + addr)
assert.NoError(t, err)
assert.NotNil(t, pid)
log.Infoln("Created test Master http server with PID", pid.String())
return &MockMesosHttpServer{PID: pid, Addr: addr, server: server, t: t, when: when}
}
func NewMockSlaveHttpServer(t *testing.T, handler func(rsp http.ResponseWriter, req *http.Request)) *MockMesosHttpServer {
server := httptest.NewServer(http.HandlerFunc(handler))
assert.NotNil(t, server)
addr := server.Listener.Addr().String()
pid, err := upid.Parse("slave(1)@" + addr)
assert.NoError(t, err)
assert.NotNil(t, pid)
assert.NoError(t, os.Setenv("MESOS_SLAVE_PID", pid.String()))
assert.NoError(t, os.Setenv("MESOS_SLAVE_ID", "test-slave-001"))
log.Infoln("Created test Slave http server with PID", pid.String())
return &MockMesosHttpServer{PID: pid, Addr: addr, server: server, t: t}
}
func (s *MockMesosHttpServer) Close() {
s.server.Close()
}
//MockMesosClient Http client to communicate with mesos processes (master,sched,exec)
type MockMesosClient struct {
pid *upid.UPID
t *testing.T
}
func NewMockMesosClient(t *testing.T, pid *upid.UPID) *MockMesosClient {
return &MockMesosClient{t: t, pid: pid}
}
// sendMessage Mocks sending event messages to a processes such as master, sched or exec.
func (c *MockMesosClient) SendMessage(targetPid *upid.UPID, message proto.Message) {
if c.t == nil {
panic("MockMesosClient needs a testing context.")
}
messageName := reflect.TypeOf(message).Elem().Name()
data, err := proto.Marshal(message)
assert.NoError(c.t, err)
hostport := net.JoinHostPort(targetPid.Host, targetPid.Port)
targetURL := fmt.Sprintf("http://%s/%s/mesos.internal.%s", hostport, targetPid.ID, messageName)
log.Infoln("MockMesosClient Sending message to", targetURL)
req, err := http.NewRequest("POST", targetURL, bytes.NewReader(data))
assert.NoError(c.t, err)
req.Header.Add("Libprocess-From", c.pid.String())
req.Header.Add("Content-Type", "application/x-protobuf")
resp, err := http.DefaultClient.Do(req)
assert.NoError(c.t, err)
assert.Equal(c.t, http.StatusAccepted, resp.StatusCode)
}