/
container.go
69 lines (51 loc) · 1.49 KB
/
container.go
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package model
import (
"fmt"
"net/http"
"time"
"github.com/fsouza/go-dockerclient"
"github.com/pkg/errors"
)
type Container struct {
ContainerId string
client *docker.Client
containerInfo *docker.Container
exposedPort docker.PortBinding
}
type HealthCheckFunc func(path string, try int)
func firstExposedPort(ports map[docker.Port][]docker.PortBinding) docker.PortBinding {
ary := []docker.PortBinding{}
for _, p := range ports {
for _, port := range p {
ary = append(ary, port)
}
}
return ary[0]
}
func ContainerFromID(dockerHost, containerId string) (*Container, error) {
client, _ := docker.NewClient(dockerHost)
containerInfo, err := client.InspectContainer(containerId)
if err != nil {
return nil, errors.Wrapf(err, "Failed to get container info. containerID %s", containerId)
}
exposedPort := firstExposedPort(containerInfo.NetworkSettings.Ports)
return &Container{containerId, client, containerInfo, exposedPort}, nil
}
func (c *Container) ExecuteHealthCheck(path string, interval, maxTry int, callback HealthCheckFunc) bool {
url := fmt.Sprintf("http://%s:%s%s", c.HostIP(), c.HostPort(), path)
for i := 1; i <= maxTry; i++ {
callback(path, i)
resp, err := http.Get(url)
if err == nil && resp.StatusCode == http.StatusOK {
return true
}
time.Sleep(time.Duration(interval) * time.Second)
}
return false
}
func (c *Container) HostIP() string {
return c.exposedPort.HostIP
}
func (c *Container) HostPort() string {
return c.exposedPort.HostPort
}