/
docker.go
81 lines (75 loc) · 1.86 KB
/
docker.go
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/*
* Copyright 2023 InfAI (CC SES)
*
* 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 docker_hdl
import (
"context"
"github.com/SENERGY-Platform/mgw-container-engine-wrapper/util"
"github.com/docker/docker/client"
"time"
)
type Docker struct {
client *client.Client
}
func New(c *client.Client) *Docker {
return &Docker{client: c}
}
func (d *Docker) ServerInfo(ctx context.Context, delay time.Duration) (map[string]string, error) {
err := d.waitForServer(ctx, delay)
if err != nil {
return nil, err
}
info := map[string]string{}
srvVer, err := d.client.ServerVersion(ctx)
if err != nil {
return info, err
}
for i := 0; i < len(srvVer.Components); i++ {
info[srvVer.Components[i].Name] = srvVer.Components[i].Version
}
info["api"] = d.client.ClientVersion()
return info, nil
}
func (d *Docker) waitForServer(ctx context.Context, delay time.Duration) error {
_, err := d.client.Ping(ctx)
if err == nil {
return nil
} else {
if !client.IsErrConnectionFailed(err) {
return err
} else {
util.Logger.Error(err)
}
}
ticker := time.NewTicker(delay)
defer ticker.Stop()
for {
select {
case <-ticker.C:
_, err = d.client.Ping(ctx)
if err == nil {
return nil
} else {
if !client.IsErrConnectionFailed(err) {
return err
} else {
util.Logger.Error(err)
}
}
case <-ctx.Done():
return ctx.Err()
}
}
}