| // Copyright 2019 The LUCI 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 cli |
| |
| import ( |
| "context" |
| "fmt" |
| "net/http" |
| "os" |
| "strings" |
| |
| "github.com/maruel/subcommands" |
| |
| "go.chromium.org/luci/auth" |
| "go.chromium.org/luci/auth/client/authcli" |
| "go.chromium.org/luci/cipd/version" |
| "go.chromium.org/luci/common/data/text" |
| "go.chromium.org/luci/common/errors" |
| "go.chromium.org/luci/common/lhttp" |
| "go.chromium.org/luci/grpc/prpc" |
| "go.chromium.org/luci/lucictx" |
| |
| pb "go.chromium.org/luci/resultdb/proto/v1" |
| ) |
| |
| // ExitCodeCommandFailure indicates that a given command failed due to internal errors |
| // or invalid input parameters. |
| const ExitCodeCommandFailure = 123 |
| |
| // baseCommandRun provides common command run functionality. |
| // All rdb subcommands must embed it directly or indirectly. |
| type baseCommandRun struct { |
| subcommands.CommandRunBase |
| authFlags authcli.Flags |
| host string |
| json bool |
| forceInsecure bool |
| fallbackHost string |
| maxConcurrentRPCs int |
| |
| http *http.Client |
| prpcClient *prpc.Client |
| resultdb pb.ResultDBClient |
| recorder pb.RecorderClient |
| resultdbCtx *lucictx.ResultDB |
| } |
| |
| func (r *baseCommandRun) RegisterGlobalFlags(p Params) { |
| r.Flags.StringVar(&r.host, "host", "", text.Doc(` |
| Host of the resultdb instance. Overrides the one in LUCI_CONTEXT. |
| `)) |
| r.Flags.BoolVar(&r.forceInsecure, "force-insecure", false, text.Doc(` |
| Force HTTP, as opposed to HTTPS. |
| `)) |
| r.Flags.IntVar(&r.maxConcurrentRPCs, "max-concurrent-rpcs", 20, text.Doc(` |
| Max concurrent RPCs to the resultdb instance (0 for unlimited). |
| `)) |
| r.authFlags.Register(&r.Flags, p.Auth) |
| // Copy the given default to the struct s.t. initClients |
| // can use it if needed. |
| r.fallbackHost = p.DefaultResultDBHost |
| } |
| |
| func (r *baseCommandRun) RegisterJSONFlag(usage string) { |
| r.Flags.BoolVar(&r.json, "json", false, usage) |
| } |
| |
| // initClients validates -host flag and initializes r.httpClient, r.resultdb and |
| // r.recorder. |
| func (r *baseCommandRun) initClients(ctx context.Context, loginMode auth.LoginMode) error { |
| // Create HTTP Client. |
| authOpts, err := r.authFlags.Options() |
| if err != nil { |
| return err |
| } |
| r.http, err = auth.NewAuthenticator(ctx, loginMode, authOpts).Client() |
| if err != nil { |
| return err |
| } |
| |
| r.resultdbCtx = lucictx.GetResultDB(ctx) |
| |
| // If no host specified in command line populate from lucictx. |
| // If host also not set in lucictx, fall back to r.fallbackHost. |
| if r.host == "" { |
| if r.resultdbCtx != nil && r.resultdbCtx.Hostname != "" { |
| r.host = r.resultdbCtx.Hostname |
| } else { |
| r.host = r.fallbackHost |
| } |
| } |
| |
| // Validate -host |
| if r.host == "" { |
| return fmt.Errorf("a host for resultdb is required") |
| } |
| if strings.ContainsRune(r.host, '/') { |
| return fmt.Errorf("invalid host %q", r.host) |
| } |
| |
| if r.maxConcurrentRPCs < 0 { |
| return fmt.Errorf("invalid -max-concurrent-rpcs %d", r.maxConcurrentRPCs) |
| } |
| |
| // Create clients. |
| rpcOpts := prpc.DefaultOptions() |
| rpcOpts.Insecure = r.forceInsecure || lhttp.IsLocalHost(r.host) |
| info, err := version.GetCurrentVersion() |
| if err != nil { |
| return err |
| } |
| rpcOpts.UserAgent = fmt.Sprintf("resultdb CLI, instanceID=%q", info.InstanceID) |
| r.prpcClient = &prpc.Client{ |
| C: r.http, |
| Host: r.host, |
| Options: rpcOpts, |
| MaxConcurrentRequests: r.maxConcurrentRPCs, |
| } |
| r.resultdb = pb.NewResultDBPRPCClient(r.prpcClient) |
| r.recorder = pb.NewRecorderPRPCClient(r.prpcClient) |
| return nil |
| } |
| |
| func (r *baseCommandRun) validateCurrentInvocation() error { |
| if r.resultdbCtx == nil { |
| return errors.Reason("resultdb section of LUCI_CONTEXT missing").Err() |
| } |
| |
| if r.resultdbCtx.CurrentInvocation.Name == "" { |
| return errors.Reason("current invocation name missing from LUCI_CONTEXT").Err() |
| } |
| |
| if r.resultdbCtx.CurrentInvocation.UpdateToken == "" { |
| return errors.Reason("invocation update token missing from LUCI_CONTEXT").Err() |
| } |
| return nil |
| } |
| |
| func (r *baseCommandRun) done(err error) int { |
| if err != nil { |
| fmt.Fprintln(os.Stderr, err) |
| return ExitCodeCommandFailure |
| } |
| return 0 |
| } |