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connect.go
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connect.go
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package postgres
import (
"context"
"fmt"
"os"
"github.com/docker/docker/pkg/ioutils"
"github.com/mattn/go-colorable"
"github.com/spf13/cobra"
"github.com/superfly/flyctl/agent"
"github.com/superfly/flyctl/api"
"github.com/superfly/flyctl/client"
"github.com/superfly/flyctl/flaps"
"github.com/superfly/flyctl/internal/appconfig"
"github.com/superfly/flyctl/internal/command"
"github.com/superfly/flyctl/internal/command/apps"
"github.com/superfly/flyctl/internal/command/ssh"
"github.com/superfly/flyctl/internal/flag"
)
func newConnect() *cobra.Command {
const (
short = "Connect to the Postgres console"
long = short + "\n"
usage = "connect"
)
cmd := command.New(usage, short, long, runConnect,
command.RequireSession,
command.RequireAppName,
)
flag.Add(cmd,
flag.App(),
flag.AppConfig(),
flag.String{
Name: "database",
Shorthand: "d",
Description: "The name of the database you would like to connect to",
Default: "postgres",
},
flag.String{
Name: "user",
Shorthand: "u",
Description: "The postgres user to connect with",
Default: "postgres",
},
flag.String{
Name: "password",
Shorthand: "p",
Description: "The postgres user password",
},
)
return cmd
}
func runConnect(ctx context.Context) error {
var (
client = client.FromContext(ctx).API()
appName = appconfig.NameFromContext(ctx)
)
app, err := client.GetAppCompact(ctx, appName)
if err != nil {
return fmt.Errorf("failed retrieving app %s: %w", appName, err)
}
if !app.IsPostgresApp() {
return fmt.Errorf("app %s is not a postgres app", appName)
}
ctx, err = apps.BuildContext(ctx, app)
if err != nil {
return err
}
switch app.PlatformVersion {
case "machines":
return runMachineConnect(ctx, app)
case "nomad":
return runNomadConnect(ctx, app)
default:
return fmt.Errorf("unknown platform version")
}
}
func runMachineConnect(ctx context.Context, app *api.AppCompact) error {
var (
MinPostgresHaVersion = "0.0.9"
MinPostgresFlexVersion = "0.0.3"
MinPostgresStandaloneVersion = "0.0.4"
database = flag.GetString(ctx, "database")
user = flag.GetString(ctx, "user")
password = flag.GetString(ctx, "password")
)
flapsClient := flaps.FromContext(ctx)
machines, err := flapsClient.ListActive(ctx)
if err != nil {
return fmt.Errorf("machines could not be retrieved %w", err)
}
if err := hasRequiredVersionOnMachines(machines, MinPostgresHaVersion, MinPostgresFlexVersion, MinPostgresStandaloneVersion); err != nil {
return err
}
leader, err := pickLeader(ctx, machines)
if err != nil {
return err
}
return ssh.SSHConnect(&ssh.SSHParams{
Ctx: ctx,
Org: app.Organization,
Dialer: agent.DialerFromContext(ctx),
App: app.Name,
Username: ssh.DefaultSshUsername,
Cmd: fmt.Sprintf("connect %s %s %s", database, user, password),
Stdin: os.Stdin,
Stdout: ioutils.NewWriteCloserWrapper(colorable.NewColorableStdout(), func() error { return nil }),
Stderr: ioutils.NewWriteCloserWrapper(colorable.NewColorableStderr(), func() error { return nil }),
}, leader.PrivateIP)
}
func runNomadConnect(ctx context.Context, app *api.AppCompact) error {
var (
client = client.FromContext(ctx).API()
MinPostgresStandaloneVersion = "0.0.4"
MinPostgresHaVersion = "0.0.9"
database = flag.GetString(ctx, "database")
user = flag.GetString(ctx, "user")
password = flag.GetString(ctx, "password")
)
if err := hasRequiredVersionOnNomad(app, MinPostgresHaVersion, MinPostgresStandaloneVersion); err != nil {
return err
}
agentclient, err := agent.Establish(ctx, client)
if err != nil {
return fmt.Errorf("failed to establish agent: %w", err)
}
pgInstances, err := agentclient.Instances(ctx, app.Organization.Slug, app.Name)
if err != nil {
return fmt.Errorf("failed to lookup 6pn ip for %s app: %v", app.Name, err)
}
if len(pgInstances.Addresses) == 0 {
return fmt.Errorf("no 6pn ips found for %s app", app.Name)
}
leaderIP, err := leaderIpFromNomadInstances(ctx, pgInstances.Addresses)
if err != nil {
return err
}
return ssh.SSHConnect(&ssh.SSHParams{
Ctx: ctx,
Org: app.Organization,
Dialer: agent.DialerFromContext(ctx),
App: app.Name,
Username: ssh.DefaultSshUsername,
Cmd: fmt.Sprintf("connect %s %s %s", database, user, password),
Stdin: os.Stdin,
Stdout: ioutils.NewWriteCloserWrapper(colorable.NewColorableStdout(), func() error { return nil }),
Stderr: ioutils.NewWriteCloserWrapper(colorable.NewColorableStderr(), func() error { return nil }),
}, leaderIP)
}