hzhang
94f33a003a
Extracted from Plexum-minimax-provider and Plexum-kimi-provider (both
had near-identical copies under internal/anthropic + internal/translate).
Future provider plugins (Qwen, Doubao, …) import these two packages
instead of re-implementing the protocol.
anthropic/ (~220 LOC + 6 tests):
- minimal HTTP+SSE Anthropic Messages client (POST /v1/messages,
stream:true, parses event:/data: SSE)
- Client.UserAgent + Client.ExtraHeaders fields for per-backend
customization (Kimi needs "claude-code/0.1.0"; MiniMax is flexible)
- non-2xx surfaces as Go error; mid-stream errors as final
Event{Type:"error"}
translate/ (~220 LOC):
- CanonicalToAnthropic: TurnRequest → MessagesRequest
- blockToAnthropic: TextBlock / ToolUseBlock / ToolResultBlock /
ThinkingBlock → loose ContentBlock map; preserves signatures
- Translator: per-turn state machine; anthropic.Event stream →
canonical.TurnEvent stream (text + thinking + tool_use deltas;
signature_delta capture; message_delta stop_reason + usage)
Both MiniMax and Kimi now import from here; their internal/* dirs are
gone. Live verified after refactor — both still answer "ready" via
plexum say.
73 lines
2.2 KiB
Markdown
73 lines
2.2 KiB
Markdown
# Plexum-anthropic-compat-client
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Shared HTTP+SSE Anthropic Messages API client + canonical ↔ Anthropic
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translator. Used by Plexum provider plugins that talk to any
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"Anthropic-compatible" endpoint (the one Anthropic itself, MiniMax,
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Kimi, Qwen, etc. all expose at `/v1/messages`).
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Each provider plugin imports these two packages and adds:
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- its own `cmd/plexum-<name>-provider-plugin/main.go` entry
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- a list of supported model ids in the manifest
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- an endpoint URL + auth key + optional User-Agent override
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## Packages
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### `anthropic/`
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Minimal HTTP+SSE client. Single entry point:
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```go
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client := anthropic.New(baseURL, apiKey)
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client.UserAgent = "claude-code/0.1.0" // optional
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events, err := client.StreamMessages(ctx, anthropic.MessagesRequest{
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Model: "MiniMax-M2.7", MaxTokens: 4096,
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Messages: []anthropic.Message{...},
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})
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for ev := range events { /* anthropic.Event */ }
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```
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Features:
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- POST `/v1/messages` with `stream: true`
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- Parses standard SSE frames (`event:` + `data:` + blank line)
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- Surfaces non-2xx as HTTP error (before channel opens)
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- Surfaces mid-stream errors as `Event{Type:"error"}` final entry
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- `UserAgent` + `ExtraHeaders` fields for per-backend customization
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- 5min per-call timeout
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### `translate/`
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Bidirectional canonical-types ↔ Anthropic-types adapter:
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- `CanonicalToAnthropic(req canonical.TurnRequest, modelID, defaultMaxTokens) → anthropic.MessagesRequest`
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- `Translator` state machine consumes `<-chan anthropic.Event`,
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emits `[]canonical.TurnEvent` per event (handles text / thinking /
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tool_use / signature deltas + per-block close)
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## Usage
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In a provider plugin's `go.mod`:
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```
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require git.hangman-lab.top/hzhang/Plexum-anthropic-compat-client v0.0.0
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replace git.hangman-lab.top/hzhang/Plexum-anthropic-compat-client => ../Plexum-anthropic-compat-client
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```
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In code:
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```go
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import (
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"git.hangman-lab.top/hzhang/Plexum-anthropic-compat-client/anthropic"
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"git.hangman-lab.top/hzhang/Plexum-anthropic-compat-client/translate"
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)
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```
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## History
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Extracted from `Plexum-minimax-provider` and `Plexum-kimi-provider` —
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both had a near-identical copy. New providers (Qwen, Doubao, …) drop in
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without re-implementing the protocol.
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## License
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Same as Plexum.
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