85 lines
2.1 KiB
Go
85 lines
2.1 KiB
Go
// Package client provides Docker client initiatialisation functions.
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package client
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import (
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"context"
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"errors"
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"fmt"
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"net/http"
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"os"
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"time"
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contextPkg "coopcloud.tech/abra/pkg/context"
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sshPkg "coopcloud.tech/abra/pkg/ssh"
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commandconnPkg "coopcloud.tech/abra/pkg/upstream/commandconn"
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"github.com/docker/docker/client"
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"github.com/sirupsen/logrus"
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)
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// New initiates a new Docker client. New client connections are validated so
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// that we ensure connections via SSH to the daemon can succeed. It takes into
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// account that you may only want the local client and not communicate via SSH.
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// For this use-case, please pass "default" as the contextName.
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func New(serverName string) (*client.Client, error) {
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var clientOpts []client.Opt
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if serverName != "default" {
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context, err := GetContext(serverName)
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if err != nil {
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return nil, fmt.Errorf("unknown server, run \"abra server add %s\"?", serverName)
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}
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ctxEndpoint, err := contextPkg.GetContextEndpoint(context)
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if err != nil {
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return nil, err
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}
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helper, err := commandconnPkg.NewConnectionHelper(ctxEndpoint)
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if err != nil {
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return nil, err
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}
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httpClient := &http.Client{
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Transport: &http.Transport{
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DialContext: helper.Dialer,
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IdleConnTimeout: 30 * time.Second,
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},
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}
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clientOpts = append(clientOpts,
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client.WithHTTPClient(httpClient),
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client.WithHost(helper.Host),
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client.WithDialContext(helper.Dialer),
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)
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}
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version := os.Getenv("DOCKER_API_VERSION")
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if version != "" {
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clientOpts = append(clientOpts, client.WithVersion(version))
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} else {
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clientOpts = append(clientOpts, client.WithAPIVersionNegotiation())
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}
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cl, err := client.NewClientWithOpts(clientOpts...)
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if err != nil {
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return nil, err
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}
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logrus.Debugf("created client for %s", serverName)
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info, err := cl.Info(context.Background())
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if err != nil {
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return cl, sshPkg.Fatal(serverName, err)
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}
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if info.Swarm.LocalNodeState == "inactive" {
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if serverName != "default" {
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return cl, fmt.Errorf("swarm mode not enabled on %s?", serverName)
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} else {
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return cl, errors.New("swarm mode not enabled on local server?")
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}
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}
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return cl, nil
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}
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