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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 | 6x 6x 6x 6x 6x 6x | /**
* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import type { OAuth2Client } from 'google-auth-library';
import type {
GoogleRpcResponse,
LoadCodeAssistRequest,
LoadCodeAssistResponse,
LongRunningOperationResponse,
OnboardUserRequest,
} from './types';
import type {
CountTokensParameters,
CountTokensResponse,
EmbedContentParameters,
EmbedContentResponse,
GenerateContentParameters,
GenerateContentResponse,
} from '@google/genai';
import * as readline from 'node:readline';
import type { ContentGenerator } from '../core/contentGenerator';
import { UserTierId } from './types';
import type {
CaCountTokenResponse,
CaGenerateContentResponse,
} from './converter';
import {
fromCountTokenResponse,
fromGenerateContentResponse,
toCountTokenRequest,
toGenerateContentRequest,
} from './converter';
/** HTTP options to be used in each of the requests. */
export interface HttpOptions {
/** Additional HTTP headers to be sent with the request. */
headers?: Record<string, string>;
}
export const CODE_ASSIST_ENDPOINT = 'https://cloudcode-pa.googleapis.com';
export const CODE_ASSIST_API_VERSION = 'v1internal';
export class CodeAssistServer implements ContentGenerator {
constructor(
readonly client: OAuth2Client,
readonly projectId?: string,
readonly httpOptions: HttpOptions = {},
readonly sessionId?: string,
readonly userTier?: UserTierId,
) {}
async generateContentStream(
req: GenerateContentParameters,
userPromptId: string,
): Promise<AsyncGenerator<GenerateContentResponse>> {
const resps = await this.requestStreamingPost<CaGenerateContentResponse>(
'streamGenerateContent',
toGenerateContentRequest(
req,
userPromptId,
this.projectId,
this.sessionId,
),
req.config?.abortSignal,
);
return (async function* (): AsyncGenerator<GenerateContentResponse> {
for await (const resp of resps) {
yield fromGenerateContentResponse(resp);
}
})();
}
async generateContent(
req: GenerateContentParameters,
userPromptId: string,
): Promise<GenerateContentResponse> {
const resp = await this.requestPost<CaGenerateContentResponse>(
'generateContent',
toGenerateContentRequest(
req,
userPromptId,
this.projectId,
this.sessionId,
),
req.config?.abortSignal,
);
return fromGenerateContentResponse(resp);
}
async onboardUser(
req: OnboardUserRequest,
): Promise<LongRunningOperationResponse> {
return await this.requestPost<LongRunningOperationResponse>(
'onboardUser',
req,
);
}
async loadCodeAssist(
req: LoadCodeAssistRequest,
): Promise<LoadCodeAssistResponse> {
try {
return await this.requestPost<LoadCodeAssistResponse>(
'loadCodeAssist',
req,
);
} catch (e) {
if (isVpcScAffectedUser(e)) {
return {
currentTier: { id: UserTierId.STANDARD },
};
} else {
throw e;
}
}
}
async countTokens(req: CountTokensParameters): Promise<CountTokensResponse> {
const resp = await this.requestPost<CaCountTokenResponse>(
'countTokens',
toCountTokenRequest(req),
);
return fromCountTokenResponse(resp);
}
async embedContent(
_req: EmbedContentParameters,
): Promise<EmbedContentResponse> {
throw Error();
}
async requestPost<T>(
method: string,
req: object,
signal?: AbortSignal,
): Promise<T> {
const res = await this.client.request({
url: this.getMethodUrl(method),
method: 'POST',
headers: {
'Content-Type': 'application/json',
...this.httpOptions.headers,
},
responseType: 'json',
body: JSON.stringify(req),
signal,
});
return res.data as T;
}
async requestGet<T>(method: string, signal?: AbortSignal): Promise<T> {
const res = await this.client.request({
url: this.getMethodUrl(method),
method: 'GET',
headers: {
'Content-Type': 'application/json',
...this.httpOptions.headers,
},
responseType: 'json',
signal,
});
return res.data as T;
}
async requestStreamingPost<T>(
method: string,
req: object,
signal?: AbortSignal,
): Promise<AsyncGenerator<T>> {
const res = await this.client.request({
url: this.getMethodUrl(method),
method: 'POST',
params: {
alt: 'sse',
},
headers: {
'Content-Type': 'application/json',
...this.httpOptions.headers,
},
responseType: 'stream',
body: JSON.stringify(req),
signal,
});
return (async function* (): AsyncGenerator<T> {
const rl = readline.createInterface({
input: res.data as NodeJS.ReadableStream,
crlfDelay: Infinity, // Recognizes '\r\n' and '\n' as line breaks
});
let bufferedLines: string[] = [];
for await (const line of rl) {
// blank lines are used to separate JSON objects in the stream
if (line === '') {
Iif (bufferedLines.length === 0) {
continue; // no data to yield
}
yield JSON.parse(bufferedLines.join('\n')) as T;
bufferedLines = []; // Reset the buffer after yielding
} else if (line.startsWith('data: ')) {
bufferedLines.push(line.slice(6).trim());
} else {
throw new Error(`Unexpected line format in response: ${line}`);
}
}
})();
}
getMethodUrl(method: string): string {
const endpoint =
process.env['CODE_ASSIST_ENDPOINT'] ?? CODE_ASSIST_ENDPOINT;
return `${endpoint}/${CODE_ASSIST_API_VERSION}:${method}`;
}
}
function isVpcScAffectedUser(error: unknown): boolean {
Iif (error && typeof error === 'object' && 'response' in error) {
const gaxiosError = error as {
response?: {
data?: unknown;
};
};
const response = gaxiosError.response?.data as
| GoogleRpcResponse
| undefined;
Iif (Array.isArray(response?.error?.details)) {
return response.error.details.some(
(detail) => detail.reason === 'SECURITY_POLICY_VIOLATED',
);
}
}
return false;
} |