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feat: Go SDK Live module initial implementation for VertexAI. #38

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Merged
merged 1 commit into from
Jan 10, 2025
Merged

feat: Go SDK Live module initial implementation for VertexAI. #38

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57 changes: 46 additions & 11 deletions live.go
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Original file line number Diff line number Diff line change
@@ -1,3 +1,17 @@
// Copyright 2024 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 genai

import (
Expand Down Expand Up @@ -34,21 +48,34 @@ func (r *Live) Connect(model string, config *LiveConnectConfig) (*Session, error
}

var u url.URL
var header http.Header
if r.apiClient.clientConfig.Backend == BackendVertexAI {
return nil, fmt.Errorf("not implemented")
token, err := r.apiClient.clientConfig.Credentials.TokenSource.Token()
if err != nil {
return nil, fmt.Errorf("failed to get token: %w", err)
}
header = http.Header{
"Content-Type": []string{"application/json"},
"Authorization": []string{fmt.Sprintf("Bearer %s", token.AccessToken)},
}
u = url.URL{
Scheme: scheme,
Host: baseURL.Host,
// TODO(b/372231289): support custom api version.
Path: "/ws/google.cloud.aiplatform.v1beta1.LlmBidiService/BidiGenerateContent",
}
} else {
u = url.URL{
Scheme: scheme,
Host: baseURL.Host,
// Host: "generativelanguage.googleapis.com",
// TODO(b/372231289): support custom api version.
Path: "/ws/google.ai.generativelanguage.v1alpha.GenerativeService.BidiGenerateContent",
RawQuery: fmt.Sprintf("key=%s", r.apiClient.clientConfig.APIKey),
}
// TODO(b/372730941): support custom header
header = http.Header{}
}

// TODO(b/372730941): support custom header
header := http.Header{}
conn, _, err := websocket.DefaultDialer.Dial(u.String(), header)
if err != nil {
return nil, fmt.Errorf("Connect to %s failed: %w", u.String(), err)
Expand All @@ -57,7 +84,11 @@ func (r *Live) Connect(model string, config *LiveConnectConfig) (*Session, error
conn: conn,
apiClient: r.apiClient,
}
kwargs := map[string]any{"model": model, "config": config}
modelFullName, err := tModelFullName(r.apiClient, model)
if err != nil {
return nil, err
}
kwargs := map[string]any{"model": modelFullName, "config": config}
parameterMap := make(map[string]any)
deepMarshal(kwargs, &parameterMap)

Expand All @@ -78,10 +109,14 @@ func (r *Live) Connect(model string, config *LiveConnectConfig) (*Session, error
return nil, fmt.Errorf("marshal LiveClientSetup failed: %w", err)
}
s.conn.WriteMessage(websocket.TextMessage, clientBytes)
_, err = s.Receive()
if err != nil {
return nil, fmt.Errorf("failed to connect to the server: %w", err)
}
return s, nil
}

// Send transmits a BidiClientMessage over the established websocket connection.
// Send transmits a LiveClientMessage over the established websocket connection.
// It returns an error if sending the message fails.
func (s *Session) Send(input *LiveClientMessage) error {
if input.Setup != nil {
Expand Down Expand Up @@ -111,18 +146,20 @@ func (s *Session) Send(input *LiveClientMessage) error {
return s.conn.WriteMessage(websocket.TextMessage, []byte(data))
}

// Receive reads a BidiServerMessage from the websocket connection.
// Receive reads a LiveServerMessage from the websocket connection.
// It returns the received message or an error if reading or unmarshalling fails.
func (s *Session) Receive() (*LiveServerMessage, error) {
messageType, msgBytes, err := s.conn.ReadMessage()
if err != nil {
return nil, err
}
// TODO(b/365983028): Implement response error handling.
responseMap := make(map[string]any)
err = json.Unmarshal(msgBytes, &responseMap)
if err != nil {
return nil, fmt.Errorf("invalid message format. messageType: %d, message: %s", messageType, msgBytes)
return nil, fmt.Errorf("invalid message format. Error %w. messageType: %d, message: %s", err, messageType, msgBytes)
}
if responseMap["error"] != nil {
return nil, fmt.Errorf("received error in response: %v", string(msgBytes))
}

var fromConverter func(*apiClient, map[string]any, map[string]any) (map[string]any, error)
Expand Down Expand Up @@ -576,7 +613,6 @@ func liveClientMessageToVertex(ac *apiClient, fromObject map[string]any, parentO
func liveSendParametersToMldev(ac *apiClient, fromObject map[string]any, parentObject map[string]any) (toObject map[string]any, err error) {
toObject = make(map[string]any)


fromInput := getValueByPath(fromObject, []string{"input"})
if fromInput != nil {
fromInput, err = liveClientMessageToMldev(ac, fromInput.(map[string]any), toObject)
Expand Down Expand Up @@ -604,7 +640,6 @@ func liveSendParametersToVertex(ac *apiClient, fromObject map[string]any, parent
return toObject, nil
}


func liveServerSetupCompleteFromMldev(ac *apiClient, fromObject map[string]any, parentObject map[string]any) (toObject map[string]any, err error) {
toObject = make(map[string]any)

Expand Down
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