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Copy pathutils.go
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169 lines (163 loc) · 4.06 KB
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package docker
import (
"fmt"
"strings"
)
// Compare two Config struct. Do not compare the "Image" nor "Hostname" fields
// If OpenStdin is set, then it differs
func CompareConfig(a, b *Config) bool {
if a == nil || b == nil ||
a.OpenStdin || b.OpenStdin {
return false
}
if a.AttachStdout != b.AttachStdout ||
a.AttachStderr != b.AttachStderr ||
a.User != b.User ||
a.Memory != b.Memory ||
a.MemorySwap != b.MemorySwap ||
a.CpuShares != b.CpuShares ||
a.OpenStdin != b.OpenStdin ||
a.Tty != b.Tty ||
a.VolumesFrom != b.VolumesFrom {
return false
}
if len(a.Cmd) != len(b.Cmd) ||
len(a.Dns) != len(b.Dns) ||
len(a.Env) != len(b.Env) ||
len(a.PortSpecs) != len(b.PortSpecs) ||
len(a.Entrypoint) != len(b.Entrypoint) ||
len(a.Volumes) != len(b.Volumes) {
return false
}
for i := 0; i < len(a.Cmd); i++ {
if a.Cmd[i] != b.Cmd[i] {
return false
}
}
for i := 0; i < len(a.Dns); i++ {
if a.Dns[i] != b.Dns[i] {
return false
}
}
for i := 0; i < len(a.Env); i++ {
if a.Env[i] != b.Env[i] {
return false
}
}
for i := 0; i < len(a.PortSpecs); i++ {
if a.PortSpecs[i] != b.PortSpecs[i] {
return false
}
}
for i := 0; i < len(a.Entrypoint); i++ {
if a.Entrypoint[i] != b.Entrypoint[i] {
return false
}
}
for key := range a.Volumes {
if _, exists := b.Volumes[key]; !exists {
return false
}
}
return true
}
func MergeConfig(userConf, imageConf *Config) {
if userConf.User == "" {
userConf.User = imageConf.User
}
if userConf.Memory == 0 {
userConf.Memory = imageConf.Memory
}
if userConf.MemorySwap == 0 {
userConf.MemorySwap = imageConf.MemorySwap
}
if userConf.CpuShares == 0 {
userConf.CpuShares = imageConf.CpuShares
}
if userConf.PortSpecs == nil || len(userConf.PortSpecs) == 0 {
userConf.PortSpecs = imageConf.PortSpecs
} else {
for _, imagePortSpec := range imageConf.PortSpecs {
found := false
imageNat, _ := parseNat(imagePortSpec)
for _, userPortSpec := range userConf.PortSpecs {
userNat, _ := parseNat(userPortSpec)
if imageNat.Proto == userNat.Proto && imageNat.Backend == userNat.Backend {
found = true
}
}
if !found {
userConf.PortSpecs = append(userConf.PortSpecs, imagePortSpec)
}
}
}
if !userConf.Tty {
userConf.Tty = imageConf.Tty
}
if !userConf.OpenStdin {
userConf.OpenStdin = imageConf.OpenStdin
}
if !userConf.StdinOnce {
userConf.StdinOnce = imageConf.StdinOnce
}
if userConf.Env == nil || len(userConf.Env) == 0 {
userConf.Env = imageConf.Env
} else {
for _, imageEnv := range imageConf.Env {
found := false
imageEnvKey := strings.Split(imageEnv, "=")[0]
for _, userEnv := range userConf.Env {
userEnvKey := strings.Split(userEnv, "=")[0]
if imageEnvKey == userEnvKey {
found = true
}
}
if !found {
userConf.Env = append(userConf.Env, imageEnv)
}
}
}
if userConf.Cmd == nil || len(userConf.Cmd) == 0 {
userConf.Cmd = imageConf.Cmd
}
if userConf.Dns == nil || len(userConf.Dns) == 0 {
userConf.Dns = imageConf.Dns
} else {
//duplicates aren't an issue here
userConf.Dns = append(userConf.Dns, imageConf.Dns...)
}
if userConf.Entrypoint == nil || len(userConf.Entrypoint) == 0 {
userConf.Entrypoint = imageConf.Entrypoint
}
if userConf.WorkingDir == "" {
userConf.WorkingDir = imageConf.WorkingDir
}
if userConf.VolumesFrom == "" {
userConf.VolumesFrom = imageConf.VolumesFrom
}
if userConf.Volumes == nil || len(userConf.Volumes) == 0 {
userConf.Volumes = imageConf.Volumes
} else {
for k, v := range imageConf.Volumes {
userConf.Volumes[k] = v
}
}
}
func parseLxcConfOpts(opts ListOpts) ([]KeyValuePair, error) {
out := make([]KeyValuePair, len(opts))
for i, o := range opts {
k, v, err := parseLxcOpt(o)
if err != nil {
return nil, err
}
out[i] = KeyValuePair{Key: k, Value: v}
}
return out, nil
}
func parseLxcOpt(opt string) (string, string, error) {
parts := strings.SplitN(opt, "=", 2)
if len(parts) != 2 {
return "", "", fmt.Errorf("Unable to parse lxc conf option: %s", opt)
}
return strings.TrimSpace(parts[0]), strings.TrimSpace(parts[1]), nil
}