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dockerutil.go
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dockerutil.go
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package dockerutil
import (
"context"
"encoding/json"
"fmt"
"net"
"net/http"
"strings"
)
type DockerClient struct {
client *http.Client
}
func New() *DockerClient {
httpc := http.Client{
Transport: &http.Transport{
DialContext: func(_ context.Context, _, _ string) (net.Conn, error) {
return net.Dial("unix", "/var/run/docker.sock")
},
},
}
return &DockerClient{&httpc}
}
func (c *DockerClient) query(path string, out interface{}) error {
resp, err := c.client.Get(fmt.Sprintf("http://unix%s", path))
if err != nil {
return err
}
defer resp.Body.Close()
//out := []map[string]interface{}{}
if err := json.NewDecoder(resp.Body).Decode(out); err != nil {
return err
}
return nil
}
type ListOps struct {
DockerComposeProject string
}
func (c *DockerClient) ListContainers(ops *ListOps) ([]map[string]interface{}, error) {
out := []map[string]interface{}{}
if err := c.query("/containers/json", &out); err != nil {
return nil, err
}
if ops == nil || ops.DockerComposeProject == "" {
return out, nil
}
res := []map[string]interface{}{}
for _, container := range out {
if strings.HasPrefix(container["Names"].([]interface{})[0].(string), "/"+ops.DockerComposeProject) {
res = append(res, container)
}
}
return res, nil
}