Files
larksuite-cli/cmd/config/init_probe.go

93 lines
3.4 KiB
Go

// Copyright (c) 2026 Lark Technologies Pte. Ltd.
// SPDX-License-Identifier: MIT
package config
import (
"bytes"
"context"
"fmt"
"io"
"net/http"
"time"
"github.com/larksuite/cli/errs"
"github.com/larksuite/cli/internal/build"
"github.com/larksuite/cli/internal/cmdutil"
"github.com/larksuite/cli/internal/core"
"github.com/larksuite/cli/internal/credential"
)
// probeTimeout is the total wall-clock budget for the credential probe step
// (covering both TAT acquisition and the subsequent probe request).
const probeTimeout = 3 * time.Second
// runProbe runs a best-effort credential validation after config init has
// persisted the App ID and App Secret. It returns a non-nil error only for a
// deterministic credential-rejection signal; every other outcome returns nil
// so that valid configurations and transient/upstream noise never block the
// command.
//
// The function performs up to two HTTP calls in series, bounded by
// probeTimeout:
//
// 1. A TAT request using the just-saved credentials. credential.FetchTAT
// returns a typed errs.* error (via the shared classifyTATResponseCode)
// only when the unified Token Endpoint deterministically rejected the
// credentials — an OAuth2 invalid_client / unauthorized_client classified as
// CategoryConfig / SubtypeInvalidClient, or whatever codemeta maps. That
// typed error is propagated so the root dispatcher renders the canonical
// envelope and `config init` exits non-zero — identical to how every other
// token-resolving command reports the same bad credentials. Ambiguous
// failures (transport errors, transient 5xx/server_error, JSON parse errors,
// timeouts) come back as raw untyped errors and are swallowed (return nil),
// so valid configurations are never disturbed by upstream noise.
// errs.IsTyped is the discriminator.
//
// 2. If TAT succeeded, a POST to the probe endpoint is fired. The outcome of
// that call (success, server error, timeout, parse failure) is always
// ignored — return nil regardless.
func runProbe(parent context.Context, factory *cmdutil.Factory, appID, appSecret string, brand core.LarkBrand) error {
if factory == nil {
return nil
}
httpClient, err := factory.HttpClient()
if err != nil {
return nil
}
ctx, cancel := context.WithTimeout(parent, probeTimeout)
defer cancel()
token, err := credential.FetchTAT(ctx, httpClient, brand, appID, appSecret)
if err != nil {
// A typed error from FetchTAT is a deterministic credential rejection
// (classifyTATResponseCode). Propagate it so config init exits with the
// same envelope the rest of the CLI uses for bad credentials. Untyped
// errors are ambiguous (transport / HTTP / parse / timeout) — stay
// silent and let the command succeed.
if errs.IsTyped(err) {
return err
}
return nil
}
// TAT succeeded — fire the probe call. Any outcome is ignored.
url := core.ResolveEndpoints(brand).Open + "/open-apis/application/v6/larksuite_cli_app/probe"
body := []byte(fmt.Sprintf(`{"from":"lark-cli/%s"}`, build.Version))
req, err := http.NewRequestWithContext(ctx, http.MethodPost, url, bytes.NewReader(body))
if err != nil {
return nil
}
req.Header.Set("Authorization", "Bearer "+token)
req.Header.Set("Content-Type", "application/json")
resp, err := httpClient.Do(req)
if err != nil {
return nil
}
defer resp.Body.Close()
_, _ = io.Copy(io.Discard, resp.Body)
return nil
}