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deploy.go
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deploy.go
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// Copyright 2022 Google LLC
//
// 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 main
import (
"context"
"flag"
"fmt"
"net/http"
"os"
"runtime/debug"
"time"
"github.com/ServiceWeaver/weaver-gke/internal/config"
"github.com/ServiceWeaver/weaver-gke/internal/gke"
"github.com/ServiceWeaver/weaver-gke/internal/nanny/controller"
"github.com/ServiceWeaver/weaver-gke/internal/tool"
"github.com/ServiceWeaver/weaver/runtime/logging"
)
var (
deployFlags = newCloudFlagSet("deploy", flag.ContinueOnError)
deploySpec = tool.DeploySpec{
Tool: "weaver gke",
Flags: deployFlags.FlagSet,
Controller: func(ctx context.Context, cfg *config.GKEConfig) (string, *http.Client, error) {
config, err := deployFlags.CloudConfig()
if err != nil {
return "", nil, err
}
return gke.Controller(ctx, config)
},
PrepareRollout: func(ctx context.Context, cfg *config.GKEConfig) (*controller.RolloutRequest, error) {
config, err := deployFlags.CloudConfig()
if err != nil {
return nil, err
}
fmt.Fprintf(os.Stderr, "Deploying to project %s\n", config.Project)
toolBinVersion, err := getToolVersion()
if err != nil {
return nil, fmt.Errorf("error extracting the tool binary version: %w", err)
}
return gke.PrepareRollout(ctx, config, cfg, toolBinVersion)
},
Source: func(ctx context.Context, cfg *config.GKEConfig) (logging.Source, error) {
config, err := deployFlags.CloudConfig()
if err != nil {
return nil, err
}
return gke.LogSource(config)
},
}
)
// getToolVersion returns the version of the tool binary.
func getToolVersion() (string, error) {
info, ok := debug.ReadBuildInfo()
if !ok {
// Should never happen.
return "", fmt.Errorf("tool binary must be built from a module")
}
version := info.Main.Version
const develToolVersion = "(devel)"
if version == develToolVersion {
// Locally-compiled tool binary. Return a version that's guaranteed to
// be lexicographically greater than any previously returned version
// (e.g., v0.10.0).
return fmt.Sprintf("vdevel%d", time.Now().Unix()), nil
}
return info.Main.Version, nil
}