sgcommand
a8c12c8c21
- config: add Prefix/Suffix fields to Config struct - systemd: ServiceName/Generate/UnitPath/Install/Uninstall/Enable/Disable/Status all accept prefix+suffix - runtime: fall back to short container ID (12 chars) when container has no name - cmd: active, status, install all thread prefix/suffix from config - systemd/generator_test.go: updated all calls + added TestGenerate_WithPrefixSuffix - docs/generated-units.md: full examples of every unit type + ordering + naming - README: updated config docs, prefix/suffix section, link to docs/
83 lines
1.8 KiB
Go
83 lines
1.8 KiB
Go
package runtime
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import (
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"encoding/json"
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"fmt"
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"os/exec"
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"strings"
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)
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type Docker struct{}
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func (d *Docker) Name() string { return "docker" }
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type dockerContainer struct {
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ID string `json:"ID"`
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Names string `json:"Names"`
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Image string `json:"Image"`
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Command string `json:"Command"`
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State string `json:"State"`
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}
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func (d *Docker) ListRunning() ([]Container, error) {
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bin, err := exec.LookPath("docker")
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if err != nil {
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return nil, nil // docker not installed — not an error
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}
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out, err := exec.Command(bin, "ps", "--format", "json").Output()
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if err != nil {
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// Docker installed but daemon not running — treat as no containers
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return nil, nil
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}
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// Docker outputs one JSON object per line (not a JSON array)
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var containers []Container
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for _, line := range strings.Split(strings.TrimSpace(string(out)), "\n") {
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if line == "" {
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continue
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}
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var c dockerContainer
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if err := json.Unmarshal([]byte(line), &c); err != nil {
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continue
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}
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name := strings.TrimPrefix(c.Names, "/")
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// Fall back to short container ID if no name assigned
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if name == "" {
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if len(c.ID) >= 12 {
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name = c.ID[:12]
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} else if c.ID != "" {
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name = c.ID
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} else {
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continue
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}
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}
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containers = append(containers, Container{
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Name: name,
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Image: c.Image,
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Command: c.Command,
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Runtime: "docker",
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})
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}
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return containers, nil
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}
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func (d *Docker) Exists(name string) (bool, error) {
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bin, err := exec.LookPath("docker")
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if err != nil {
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return false, nil
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}
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out, err := exec.Command(bin, "ps", "-a", "--format", "{{.Names}}").Output()
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if err != nil {
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return false, fmt.Errorf("docker ps -a: %w", err)
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}
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for _, line := range strings.Split(string(out), "\n") {
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if strings.TrimSpace(line) == name {
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return true, nil
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}
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}
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return false, nil
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}
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