116 lines
2.6 KiB
Go
116 lines
2.6 KiB
Go
package main
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import (
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"encoding/json"
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"fmt"
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"log"
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"net/http"
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"os/exec"
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"strings"
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)
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type ContainerInfo struct {
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ID string
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Name string
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CName string
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Interval string
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Ignores []string
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}
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func listContainersHandler(w http.ResponseWriter, r *http.Request) {
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containers, err := listContainers()
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if err != nil {
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http.Error(w, fmt.Sprintf("Error listing containers: %v", err), http.StatusInternalServerError)
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return
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}
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w.Header().Set("Content-Type", "application/json")
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if err := json.NewEncoder(w).Encode(containers); err != nil {
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http.Error(w, fmt.Sprintf("Error encoding response: %v", err), http.StatusInternalServerError)
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}
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}
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func getDiffHandler(w http.ResponseWriter, r *http.Request) {
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containerID := r.URL.Query().Get("id")
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if containerID == "" {
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http.Error(w, "Missing container ID", http.StatusBadRequest)
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return
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}
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diffOutput, err := getDiffOutput(containerID)
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if err != nil {
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http.Error(w, fmt.Sprintf("Error getting diff for container %s: %v", containerID, err), http.StatusInternalServerError)
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return
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}
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w.Header().Set("Content-Type", "text/plain")
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w.Write([]byte(diffOutput))
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}
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func startServer() {
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http.HandleFunc("/containers", listContainersHandler)
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http.HandleFunc("/diff", getDiffHandler)
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log.Println("Starting server on :8080")
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if err := http.ListenAndServe(":8080", nil); err != nil {
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log.Fatalf("Error starting server: %v", err)
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}
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}
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func listContainers() ([]ContainerInfo, error) {
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output, err := exec.Command("docker", "ps", "--format", "{{.ID}} {{.Names}} {{.Label \"oculus.enable\"}} {{.Label \"oculus.interval\"}} {{.Label \"oculus.cname\"}} {{.Label \"oculus.ignores\"}}").Output()
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if err != nil {
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return nil, err
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}
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lines := strings.Split(string(output), "\n")
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var containers []ContainerInfo
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for _, line := range lines {
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if line == "" {
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continue
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}
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parts := strings.Fields(line)
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if len(parts) < 3 || parts[2] == "" {
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continue
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}
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id := parts[0]
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name := parts[1]
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interval := "300s"
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if len(parts) > 3 && parts[3] != "" {
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interval = parts[3]
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}
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cname := name
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if len(parts) > 4 && parts[4] != "" {
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cname = parts[4]
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}
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ignores := []string{}
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if len(parts) > 5 && parts[5] != "" {
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ignores = strings.Split(parts[5], ",")
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}
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containers = append(containers, ContainerInfo{
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ID: id,
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Name: name,
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CName: cname,
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Interval: interval,
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Ignores: ignores,
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})
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}
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return containers, nil
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}
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func getDiffOutput(containerID string) (string, error) {
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cmd := exec.Command("docker", "diff", containerID)
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output, err := cmd.Output()
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if err != nil {
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return "", fmt.Errorf("docker diff failed: %w", err)
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}
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return string(output), nil
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}
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func main() {
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startServer()
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}
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