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/*
Copyright 2020 Docker Compose CLI authors
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package compose
import (
"encoding/json"
"github.com/compose-spec/compose-go/v2/types"
"github.com/opencontainers/go-digest"
)
// ServiceHash computes the configuration hash for a service.
func ServiceHash(o types.ServiceConfig) (string, error) {
// remove the Build config when generating the service hash
o.Build = nil
o.PullPolicy = ""
o.Scale = nil
if o.Deploy != nil {
o.Deploy.Replicas = nil
}
o.DependsOn = nil
o.Profiles = nil
bytes, err := json.Marshal(o)
if err != nil {
return "", err
}
return digest.SHA256.FromBytes(bytes).Encoded(), nil
}
// NetworkHash computes the configuration hash for a network.
func NetworkHash(o *types.NetworkConfig) (string, error) {
bytes, err := json.Marshal(o)
if err != nil {
return "", err
}
return digest.SHA256.FromBytes(bytes).Encoded(), nil
}
// VolumeHash computes the configuration hash for a volume.
func VolumeHash(o types.VolumeConfig) (string, error) {
if o.Driver == "" { // (TODO: jhrotko) This probably should be fixed in compose-go
o.Driver = "local"
}
bytes, err := json.Marshal(o)
if err != nil {
return "", err
}
return digest.SHA256.FromBytes(bytes).Encoded(), nil
}
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