func main() {
flag.Parse()
config := marathon.NewDefaultConfig()
config.URL = marathon_url
config.LogOutput = os.Stdout
client, err := marathon.NewClient(config)
if err != nil {
glog.Fatalf("Failed to create a client for marathon, error: %s", err)
}
for {
if application, err := client.Applications(nil); err != nil {
glog.Errorf("Failed to retrieve a list of applications, error: %s", err)
} else {
glog.Infof("Retrieved a list of applications, %v", application)
}
glog.Infof("Going to sleep for 20 seconds")
time.Sleep(5 * time.Second)
}
}
func Assert(err error) {
if err != nil {
glog.Fatalf("Failed, error: %s", err)
}
}
func main() {
flag.Parse()
config := marathon.NewDefaultConfig()
config.URL = marathon_url
config.LogOutput = os.Stdout
client, err := marathon.NewClient(config)
if err != nil {
glog.Fatalf("Failed to create a client for marathon, error: %s", err)
}
glog.Infof("Retrieving a list of groups")
if groups, err := client.Groups(); err != nil {
glog.Errorf("Failed to retrieve the groups from maratho, error: %s", err)
} else {
for _, group := range groups.Groups {
glog.Infof("Found group: %s", group.ID)
}
}
GROUP_NAME := "/product/group"
found, err := client.HasGroup(GROUP_NAME)
Assert(err)
if found {
glog.Infof("Deleting the grouy: %s, as it already exists", GROUP_NAME)
id, err := client.DeleteGroup(GROUP_NAME)
Assert(err)
err = client.WaitOnDeployment(id.DeploymentID, 0)
Assert(err)
}
/* step: the frontend app */
frontend := marathon.NewDockerApplication()
frontend.Name("/product/group/frontend")
frontend.CPU(0.1).Memory(64).Storage(0.0).Count(2)
frontend.Arg("/usr/sbin/apache2ctl").Arg("-D").Arg("FOREGROUND")
frontend.AddEnv("NAME", "frontend_http")
frontend.AddEnv("SERVICE_80_NAME", "frontend_http")
frontend.AddEnv("SERVICE_443_NAME", "frontend_https")
frontend.AddEnv("BACKEND_MYSQL", "/product/group/mysql/3306;3306")
frontend.AddEnv("BACKEND_CACHE", "/product/group/cache/6379;6379")
frontend.DependsOn("/product/group/cache")
frontend.DependsOn("/product/group/mysql")
frontend.Container.Docker.Container("quay.io/gambol99/apache-php:latest").Expose(80).Expose(443)
_, err = frontend.CheckHTTP("/hostname.php", 80, 10)
Assert(err)
mysql := marathon.NewDockerApplication()
mysql.Name("/product/group/mysql")
mysql.CPU(0.1).Memory(128).Storage(0.0).Count(1)
mysql.AddEnv("NAME", "group_cache")
mysql.AddEnv("SERVICE_3306_NAME", "mysql")
mysql.AddEnv("MYSQL_PASS", "mysql")
mysql.Container.Docker.Container("tutum/mysql").Expose(3306)
_, err = mysql.CheckTCP(3306, 10)
Assert(err)
redis := marathon.NewDockerApplication()
redis.Name("/product/group/cache")
redis.CPU(0.1).Memory(64).Storage(0.0).Count(2)
redis.AddEnv("NAME", "group_cache")
redis.AddEnv("SERVICE_6379_NAME", "redis")
redis.Container.Docker.Container("redis:latest").Expose(6379)
_, err = redis.CheckTCP(6379, 10)
Assert(err)
group := marathon.NewApplicationGroup(GROUP_NAME)
group.App(frontend).App(redis).App(mysql)
Assert(client.CreateGroup(group))
glog.Infof("Successfully created the group: %s", group.ID)
glog.Infof("Updating the group paramaters")
frontend.Count(4)
id, err := client.UpdateGroup(GROUP_NAME, group)
Assert(err)
glog.Infof("Successfully updated the group: %s, version: %s", group.ID, id.DeploymentID)
Assert(client.WaitOnGroup(GROUP_NAME, 500*time.Second))
}