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moby--moby/runconfig/compare.go

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package runconfig
// Compare two Config struct. Do not compare the "Image" nor "Hostname" fields
// If OpenStdin is set, then it differs
func Compare(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.OpenStdin != b.OpenStdin ||
a.Tty != b.Tty {
return false
}
if a.Cmd.Len() != b.Cmd.Len() ||
len(a.Env) != len(b.Env) ||
len(a.Labels) != len(b.Labels) ||
len(a.ExposedPorts) != len(b.ExposedPorts) ||
a.Entrypoint.Len() != b.Entrypoint.Len() ||
len(a.Volumes) != len(b.Volumes) {
return false
}
aCmd := a.Cmd.Slice()
bCmd := b.Cmd.Slice()
for i := 0; i < len(aCmd); i++ {
if aCmd[i] != bCmd[i] {
return false
}
}
for i := 0; i < len(a.Env); i++ {
if a.Env[i] != b.Env[i] {
return false
}
}
for k, v := range a.Labels {
if v != b.Labels[k] {
return false
}
}
for k := range a.ExposedPorts {
if _, exists := b.ExposedPorts[k]; !exists {
return false
}
}
aEntrypoint := a.Entrypoint.Slice()
bEntrypoint := b.Entrypoint.Slice()
for i := 0; i < len(aEntrypoint); i++ {
if aEntrypoint[i] != bEntrypoint[i] {
return false
}
}
for key := range a.Volumes {
if _, exists := b.Volumes[key]; !exists {
return false
}
}
return true
}