746 lines
24 KiB
TypeScript
746 lines
24 KiB
TypeScript
/**
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* Testable Command Code provider core.
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*
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* The runtime imports live in index.ts; this module takes injected stream/cost
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* dependencies so tests can exercise the real serialization and stream parser.
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*/
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import { randomUUID } from "node:crypto"
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import { commandCodeErrorMessage, redactCommandCodeErrorText } from "./overflow.ts"
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import {
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getApiKey,
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getEnvironmentInfo,
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isRecord,
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assertTextOnlyMessages,
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mapFinishReason,
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messagesToCC,
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numberValue,
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parseStreamEventLine,
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recordOrEmpty,
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stringValue,
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toolsToJson,
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systemPromptToText,
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} from "./converters.ts"
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import type {
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AssistantMessageEventStreamLike,
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AssistantMessageLike,
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ContextLike,
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CoreDependencies,
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ErrorReason,
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ModelLike,
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StopReason,
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StreamOptions,
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TerminalReason,
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TextContent,
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ToolCallContent,
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Usage,
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} from "./types.ts"
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export * from "./converters.ts"
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export * from "./overflow.ts"
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export * from "./types.ts"
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export const DEFAULT_API_BASE = "https://api.commandcode.ai"
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export const COMMAND_CODE_CLI_VERSION = "0.29.0"
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/**
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* The legacy /alpha/generate request path used by this provider has no
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* documented image-part contract. Keep the advertised capability text-only
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* until Command Code documents and tests image handling for this endpoint.
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*/
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export const COMMAND_CODE_INPUT_TYPES = ["text"] as const
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const DEFAULT_GENERATE_MAX_TOKENS = 64_000
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const DEFAULT_MAX_RETRIES = 0
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const DEFAULT_MAX_RETRY_DELAY_MS = 60_000
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const BASE_RETRY_DELAY_MS = 500
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function isRetryableStatus(status: number): boolean {
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return status === 429 || (status >= 500 && status < 600)
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}
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function parseRetryAfterSeconds(value: string | null): number | undefined {
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if (!value) return undefined
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const seconds = Number(value)
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if (Number.isFinite(seconds) && seconds >= 0) return seconds
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const date = Date.parse(value)
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if (!Number.isNaN(date)) return Math.max(0, (date - Date.now()) / 1000)
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return undefined
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}
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function effectiveMaxRetryDelayMs(value: number | undefined): number {
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if (value === undefined) return DEFAULT_MAX_RETRY_DELAY_MS
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if (value === 0) return Number.POSITIVE_INFINITY
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return value
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}
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function retryDelayMs(
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attempt: number,
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retryAfterHeader: string | null,
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maxDelayMs: number,
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): number {
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const retryAfterMs = parseRetryAfterSeconds(retryAfterHeader)
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if (retryAfterMs !== undefined) {
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if (retryAfterMs * 1000 > maxDelayMs) return -1
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return retryAfterMs * 1000
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}
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const exponential = BASE_RETRY_DELAY_MS * 2 ** attempt
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const jitter = exponential * 0.2 * Math.random()
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return Math.min(exponential + jitter, maxDelayMs)
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}
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function defaultUsage(): Usage {
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return {
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input: 0,
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output: 0,
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cacheRead: 0,
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cacheWrite: 0,
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totalTokens: 0,
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cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0, total: 0 },
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}
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}
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function commandCodeUsage(event: Record<string, unknown>): Record<string, unknown> | undefined {
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return isRecord(event.totalUsage) ? event.totalUsage : undefined
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}
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function commandCodeInputTokenDetails(
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usage: Record<string, unknown>,
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): Record<string, unknown> | undefined {
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return isRecord(usage.inputTokenDetails) ? usage.inputTokenDetails : undefined
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}
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function headersToRecord(headers: Headers): Record<string, string> {
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const out: Record<string, string> = {}
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headers.forEach((value, key) => {
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out[key] = value
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})
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return out
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}
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function abortError(message = "The operation was aborted"): DOMException {
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return new DOMException(message, "AbortError")
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}
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function timeoutError(timeoutMs: number | undefined): Error {
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return new Error(
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timeoutMs === undefined
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? "Command Code API request timed out"
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: `Command Code API request timed out after ${timeoutMs}ms`,
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)
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}
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function successStopReason(reason: TerminalReason): StopReason {
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if (reason === "length" || reason === "toolUse") return reason
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return "stop"
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}
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function generateMaxTokens(model: ModelLike, options?: StreamOptions): number {
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return Math.min(
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options?.maxTokens ?? model.maxTokens,
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model.maxTokens,
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DEFAULT_GENERATE_MAX_TOKENS,
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)
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}
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function mappedReasoningEffort(model: ModelLike, options?: StreamOptions): string | undefined {
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const level = options?.reasoning
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if (!level || level === "off" || !model.reasoning) return undefined
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const effortMap = model.thinking?.effortMap ?? model.thinkingLevelMap
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const mapped = effortMap?.[level]
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return typeof mapped === "string" && mapped !== "off" ? mapped : undefined
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}
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export function projectSlugFromPath(pathName: string): string {
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const slug = pathName
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.toLowerCase()
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.replace(/^[a-z]:/i, "")
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.replace(/[^a-z0-9]+/g, "-")
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.replace(/^-+|-+$/g, "")
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return slug || "project"
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}
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export function createStreamCommandCode(deps: CoreDependencies) {
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const apiBase = deps.apiBase ?? DEFAULT_API_BASE
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const fetchImpl = deps.fetchImpl ?? fetch
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const cwd = deps.cwd ?? (() => process.cwd())
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const now = deps.now ?? (() => Date.now())
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const uuid = deps.uuid ?? (() => randomUUID())
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const delay =
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deps.delay ??
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((ms: number, signal: AbortSignal) => {
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if (signal.aborted) return Promise.reject(abortError())
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return new Promise<void>((resolve, reject) => {
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const id = setTimeout(() => {
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signal.removeEventListener("abort", onAbort)
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resolve()
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}, ms)
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const onAbort = () => {
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clearTimeout(id)
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reject(abortError())
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}
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signal.addEventListener("abort", onAbort, { once: true })
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})
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})
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function raceAbort<T>(promise: Promise<T>, signal: AbortSignal): Promise<T> {
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if (signal.aborted) return Promise.reject(abortError())
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return new Promise<T>((resolve, reject) => {
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const onAbort = () => reject(abortError())
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signal.addEventListener("abort", onAbort, { once: true })
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promise.then(
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(value) => {
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signal.removeEventListener("abort", onAbort)
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resolve(value)
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},
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(error: unknown) => {
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signal.removeEventListener("abort", onAbort)
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reject(error)
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},
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)
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})
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}
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function raceAbortWithTimeout<T>(
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promise: Promise<T>,
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controller: AbortController,
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timeoutMs: number | undefined,
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): Promise<T> {
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if (timeoutMs === undefined) return raceAbort(promise, controller.signal)
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return new Promise<T>((resolve, reject) => {
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const timer = setTimeout(() => {
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controller.abort()
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reject(timeoutError(timeoutMs))
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}, timeoutMs)
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raceAbort(promise, controller.signal).then(
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(value) => {
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clearTimeout(timer)
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resolve(value)
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},
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(error: unknown) => {
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clearTimeout(timer)
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reject(error)
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},
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)
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})
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}
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return function streamCommandCode(
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model: ModelLike,
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context: ContextLike,
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options?: StreamOptions,
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): AssistantMessageEventStreamLike {
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const stream = deps.createStream()
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async function run() {
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// OMP may pass the legacy env-var name "COMMANDCODE_API_KEY" (old pi)
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// or "$COMMANDCODE_API_KEY" (new pi) as the apiKey value instead of
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// resolving it. Filter out these specific strings.
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const LEGACY_API_KEY_REF = "$COMMANDCODE_API_KEY"
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const OLD_API_KEY_REF = "COMMANDCODE_API_KEY"
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const hostKey =
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options?.apiKey &&
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options.apiKey !== LEGACY_API_KEY_REF &&
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options.apiKey !== OLD_API_KEY_REF
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? options.apiKey
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: undefined
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const apiKey =
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hostKey ??
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getApiKey({
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env: deps.env,
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authPaths: deps.authPaths,
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homeDir: deps.homeDir,
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})
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if (!apiKey) {
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const msg: AssistantMessageLike = {
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role: "assistant",
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content: [],
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api: model.api,
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provider: model.provider,
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model: model.id,
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usage: defaultUsage(),
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stopReason: "error",
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errorMessage:
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"No Command Code API key. Run /login and select Command Code, set the COMMANDCODE_API_KEY env var, or configure ~/.commandcode/auth.json, ~/.pi/agent/auth.json or ~/.omp/agent/auth.json",
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timestamp: now(),
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}
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stream.push({ type: "error", reason: "error", error: msg })
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stream.end()
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return
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}
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const output: AssistantMessageLike = {
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role: "assistant",
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content: [],
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api: model.api,
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provider: model.provider,
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model: model.id,
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usage: defaultUsage(),
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stopReason: "stop",
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timestamp: now(),
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}
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const controller = new AbortController()
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let reader: ReadableStreamDefaultReader<Uint8Array> | undefined
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let textBlock: TextContent | undefined
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let currentTextIdx = -1
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let thinkingIdx = -1
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let finished = false
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const abortUpstream = () => {
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if (!controller.signal.aborted) controller.abort()
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try {
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reader?.cancel().catch(() => undefined)
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} catch {
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// Reader cancellation is best-effort.
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}
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}
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if (options?.signal?.aborted) {
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abortUpstream()
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} else {
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options?.signal?.addEventListener("abort", abortUpstream, {
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once: true,
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})
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}
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const endTextBlock = () => {
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if (!textBlock) return
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stream.push({
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type: "text_end",
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contentIndex: currentTextIdx,
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content: textBlock.text,
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partial: output,
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})
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textBlock = undefined
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currentTextIdx = -1
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}
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const endThinking = () => {
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if (thinkingIdx < 0) return
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const tc = output.content[thinkingIdx]
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if (tc && tc.type === "thinking") {
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stream.push({
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type: "thinking_end",
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contentIndex: thinkingIdx,
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content: (tc as { thinking: string }).thinking,
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partial: output,
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})
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}
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thinkingIdx = -1
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}
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const handleEvent = (event: unknown) => {
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if (!isRecord(event)) return
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switch (event.type) {
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case "text-delta": {
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endThinking()
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if (!textBlock) {
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textBlock = { type: "text", text: "" }
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output.content.push(textBlock)
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currentTextIdx = output.content.length - 1
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stream.push({
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type: "text_start",
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contentIndex: currentTextIdx,
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partial: output,
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})
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}
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const delta = stringValue(event.text) ?? ""
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textBlock.text += delta
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stream.push({
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type: "text_delta",
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contentIndex: currentTextIdx,
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delta,
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partial: output,
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})
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break
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}
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case "reasoning-start": {
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endTextBlock()
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break
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}
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case "reasoning-delta": {
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endTextBlock()
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const delta = stringValue(event.text) ?? ""
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if (thinkingIdx < 0) {
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output.content.push({ type: "thinking", thinking: delta })
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thinkingIdx = output.content.length - 1
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stream.push({
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type: "thinking_start",
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contentIndex: thinkingIdx,
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partial: output,
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})
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} else {
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const tc = output.content[thinkingIdx]
|
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if (tc && tc.type === "thinking") {
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;(tc as { thinking: string }).thinking += delta
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}
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}
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stream.push({
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type: "thinking_delta",
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contentIndex: thinkingIdx,
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delta,
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partial: output,
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})
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break
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}
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case "reasoning-end": {
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endThinking()
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break
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}
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case "tool-result": {
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break
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}
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|
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case "tool-call": {
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endTextBlock()
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endThinking()
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const toolCall: ToolCallContent = {
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type: "toolCall",
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id: stringValue(event.toolCallId) ?? "",
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name: stringValue(event.toolName) ?? "",
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arguments: recordOrEmpty(event.input ?? event.args ?? event.arguments),
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}
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output.content.push(toolCall)
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const idx = output.content.length - 1
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stream.push({
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type: "toolcall_start",
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contentIndex: idx,
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partial: output,
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})
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stream.push({
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type: "toolcall_end",
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contentIndex: idx,
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toolCall,
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partial: output,
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})
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break
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}
|
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|
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case "finish": {
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const usage = commandCodeUsage(event)
|
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if (usage) {
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const details = commandCodeInputTokenDetails(usage)
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const totalInput = numberValue(usage.inputTokens) ?? 0
|
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const input = numberValue(details?.noCacheTokens)
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const cacheRead = numberValue(details?.cacheReadTokens) ?? 0
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const cacheWrite = numberValue(details?.cacheWriteTokens) ?? 0
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output.usage.input = input ?? Math.max(0, totalInput - cacheRead - cacheWrite)
|
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output.usage.output = numberValue(usage.outputTokens) ?? 0
|
|
output.usage.cacheRead = cacheRead
|
|
output.usage.cacheWrite = cacheWrite
|
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output.usage.totalTokens =
|
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output.usage.input +
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|
output.usage.output +
|
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output.usage.cacheRead +
|
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output.usage.cacheWrite
|
|
deps.calculateCost(model, output.usage)
|
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}
|
|
output.stopReason = mapFinishReason(event.finishReason)
|
|
finished = true
|
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break
|
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}
|
|
|
|
case "error": {
|
|
const message =
|
|
commandCodeErrorMessage(event.error) ??
|
|
commandCodeErrorMessage(event.message) ??
|
|
"Stream error"
|
|
output.stopReason = "error"
|
|
output.errorMessage = message
|
|
throw new Error(message)
|
|
}
|
|
}
|
|
}
|
|
|
|
try {
|
|
stream.push({ type: "start", partial: output })
|
|
if (controller.signal.aborted) throw abortError("Aborted")
|
|
|
|
const workingDir = cwd()
|
|
const threadId = uuid()
|
|
const reasoningEffort = mappedReasoningEffort(model, options)
|
|
const timeoutMs = options?.timeoutMs
|
|
|
|
assertTextOnlyMessages(context.messages)
|
|
|
|
let body: unknown = {
|
|
config: {
|
|
workingDir,
|
|
date: new Date(now()).toISOString().split("T")[0],
|
|
environment: getEnvironmentInfo(),
|
|
structure: [],
|
|
isGitRepo: false,
|
|
currentBranch: "",
|
|
mainBranch: "",
|
|
gitStatus: "",
|
|
recentCommits: [],
|
|
},
|
|
memory: null,
|
|
taste: null,
|
|
skills: null,
|
|
params: {
|
|
model: model.id,
|
|
messages: messagesToCC(context.messages),
|
|
tools: toolsToJson(context.tools),
|
|
system: systemPromptToText(context.systemPrompt),
|
|
max_tokens: generateMaxTokens(model, options),
|
|
temperature: 0.3,
|
|
stream: true,
|
|
...(reasoningEffort ? { reasoning_effort: reasoningEffort } : {}),
|
|
},
|
|
threadId,
|
|
}
|
|
|
|
const payloadController = new AbortController()
|
|
const onPayloadAbort = () => payloadController.abort()
|
|
controller.signal.addEventListener("abort", onPayloadAbort, { once: true })
|
|
let nextBody: unknown
|
|
try {
|
|
nextBody = await raceAbortWithTimeout(
|
|
Promise.resolve(options?.onPayload?.(body, model)),
|
|
payloadController,
|
|
timeoutMs,
|
|
)
|
|
} finally {
|
|
controller.signal.removeEventListener("abort", onPayloadAbort)
|
|
}
|
|
if (nextBody !== undefined) body = nextBody
|
|
|
|
const maxRetries = options?.maxRetries ?? DEFAULT_MAX_RETRIES
|
|
const maxRetryDelayMs = effectiveMaxRetryDelayMs(options?.maxRetryDelayMs)
|
|
const requestHeaders = {
|
|
"Content-Type": "application/json",
|
|
Authorization: `Bearer ${apiKey}`,
|
|
"x-command-code-version": COMMAND_CODE_CLI_VERSION,
|
|
"x-cli-environment": "production",
|
|
"x-project-slug": projectSlugFromPath(workingDir),
|
|
"x-taste-learning": "true",
|
|
"x-co-flag": "false",
|
|
...options?.headers,
|
|
}
|
|
const bodyStr = JSON.stringify(body)
|
|
|
|
let response!: Response
|
|
retryLoop: for (let attempt = 0; ; attempt++) {
|
|
const attemptController = new AbortController()
|
|
let attemptTimedOut = false
|
|
let attemptTimeoutId: ReturnType<typeof setTimeout> | undefined
|
|
|
|
const clearAttemptTimeout = () => {
|
|
if (attemptTimeoutId !== undefined) {
|
|
clearTimeout(attemptTimeoutId)
|
|
attemptTimeoutId = undefined
|
|
}
|
|
}
|
|
|
|
if (timeoutMs !== undefined) {
|
|
attemptTimeoutId = setTimeout(() => {
|
|
attemptTimedOut = true
|
|
attemptController.abort()
|
|
}, timeoutMs)
|
|
}
|
|
const onOuterAbort = () => attemptController.abort()
|
|
controller.signal.addEventListener("abort", onOuterAbort, { once: true })
|
|
const raceAttempt = <T>(promise: Promise<T>): Promise<T> =>
|
|
raceAbort(promise, attemptController.signal).catch((error: unknown) => {
|
|
if (attemptTimedOut) throw timeoutError(timeoutMs)
|
|
throw error
|
|
})
|
|
|
|
try {
|
|
try {
|
|
response = await fetchImpl(`${apiBase}/alpha/generate`, {
|
|
method: "POST",
|
|
headers: requestHeaders,
|
|
body: bodyStr,
|
|
signal: attemptController.signal,
|
|
})
|
|
} catch (fetchError: unknown) {
|
|
if (controller.signal.aborted) throw abortError("Aborted")
|
|
if (attemptTimedOut) {
|
|
if (attempt < maxRetries) continue retryLoop
|
|
throw timeoutError(timeoutMs)
|
|
}
|
|
throw fetchError
|
|
}
|
|
|
|
// --- HTTP-level retry ---
|
|
if (!response.ok && isRetryableStatus(response.status)) {
|
|
const retryAfter = response.headers.get("retry-after")
|
|
const waitMs = retryDelayMs(attempt, retryAfter, maxRetryDelayMs)
|
|
if (waitMs < 0) {
|
|
const requestedSeconds = parseRetryAfterSeconds(retryAfter) ?? 0
|
|
const capLabel =
|
|
maxRetryDelayMs === Number.POSITIVE_INFINITY ? "disabled" : `${maxRetryDelayMs}ms`
|
|
throw new Error(`Retry-After delay ${requestedSeconds}s exceeds max ${capLabel}`)
|
|
}
|
|
if (attempt < maxRetries) {
|
|
await response.text().catch(() => "")
|
|
if (waitMs > 0) await delay(waitMs, controller.signal)
|
|
continue retryLoop
|
|
}
|
|
}
|
|
|
|
try {
|
|
await raceAttempt(
|
|
Promise.resolve(
|
|
options?.onResponse?.(
|
|
{
|
|
status: response.status,
|
|
headers: headersToRecord(response.headers),
|
|
},
|
|
model,
|
|
),
|
|
),
|
|
)
|
|
} catch (error: unknown) {
|
|
if (attemptTimedOut && attempt < maxRetries) continue retryLoop
|
|
throw error
|
|
}
|
|
|
|
if (!response.ok) {
|
|
const errBody = await raceAttempt(response.text().catch(() => ""))
|
|
let errorDetail: string | undefined
|
|
try {
|
|
const parsedBody: unknown = JSON.parse(errBody)
|
|
errorDetail = commandCodeErrorMessage(parsedBody)
|
|
} catch {
|
|
// Preserve useful plain-text provider errors only after secret
|
|
// redaction; upstream/proxy bodies may echo credentials.
|
|
}
|
|
const safeBody = redactCommandCodeErrorText(errBody).slice(0, 500)
|
|
const detail = redactCommandCodeErrorText(
|
|
errorDetail ?? (safeBody || "Provider returned an error"),
|
|
)
|
|
throw new Error(`Command Code API error ${response.status}: ${detail}`)
|
|
}
|
|
|
|
// --- Read response stream ---
|
|
reader = response.body?.getReader()
|
|
if (!reader) throw new Error("No response body")
|
|
|
|
const decoder = new TextDecoder()
|
|
let buffer = ""
|
|
|
|
try {
|
|
readLoop: for (;;) {
|
|
if (controller.signal.aborted) throw abortError("Aborted")
|
|
const { done, value } = await raceAbort(reader.read(), attemptController.signal)
|
|
if (done) {
|
|
if (buffer.trim()) handleEvent(parseStreamEventLine(buffer))
|
|
break
|
|
}
|
|
if (controller.signal.aborted) throw abortError("Aborted")
|
|
|
|
buffer += decoder.decode(value, { stream: true })
|
|
const lines = buffer.split("\n")
|
|
buffer = lines.pop() ?? ""
|
|
|
|
for (const line of lines) {
|
|
if (controller.signal.aborted) throw abortError("Aborted")
|
|
handleEvent(parseStreamEventLine(line))
|
|
if (finished) break readLoop
|
|
}
|
|
}
|
|
} catch (streamError: unknown) {
|
|
// Stream-level error (e.g. API returned 200 OK but sent an error event)
|
|
// or per-attempt timeout during stream reading.
|
|
await reader.cancel().catch(() => {})
|
|
try {
|
|
reader.releaseLock()
|
|
} catch {}
|
|
reader = undefined
|
|
|
|
if (controller.signal.aborted) throw streamError
|
|
|
|
// Never retry after visible content was emitted (including timeout mid-stream).
|
|
const canRetry = output.content.length === 0 && attempt < maxRetries
|
|
if (canRetry) {
|
|
output.content.length = 0
|
|
textBlock = undefined
|
|
currentTextIdx = -1
|
|
thinkingIdx = -1
|
|
output.stopReason = "stop"
|
|
output.errorMessage = undefined
|
|
finished = false
|
|
const waitMs = attemptTimedOut ? 0 : retryDelayMs(attempt, null, maxRetryDelayMs)
|
|
if (waitMs > 0) await delay(waitMs, controller.signal)
|
|
continue retryLoop
|
|
}
|
|
if (attemptTimedOut) throw timeoutError(timeoutMs)
|
|
throw streamError
|
|
}
|
|
|
|
// Stream completed successfully.
|
|
endTextBlock()
|
|
endThinking()
|
|
|
|
stream.push({
|
|
type: "done",
|
|
reason: successStopReason(output.stopReason),
|
|
message: output,
|
|
})
|
|
stream.end()
|
|
break retryLoop
|
|
} finally {
|
|
controller.signal.removeEventListener("abort", onOuterAbort)
|
|
clearAttemptTimeout()
|
|
}
|
|
}
|
|
} catch (error: unknown) {
|
|
const reason: ErrorReason = controller.signal.aborted ? "aborted" : "error"
|
|
output.stopReason = reason
|
|
output.errorMessage =
|
|
reason === "aborted"
|
|
? "Request aborted"
|
|
: redactCommandCodeErrorText(error instanceof Error ? error.message : String(error))
|
|
stream.push({ type: "error", reason, error: output })
|
|
stream.end()
|
|
} finally {
|
|
options?.signal?.removeEventListener("abort", abortUpstream)
|
|
try {
|
|
await reader?.cancel()
|
|
} catch {
|
|
// Reader may already be closed/cancelled.
|
|
}
|
|
try {
|
|
reader?.releaseLock()
|
|
} catch {
|
|
// Reader may already be released/cancelled by the abort path.
|
|
}
|
|
}
|
|
}
|
|
|
|
run().catch((error: unknown) => {
|
|
const msg: AssistantMessageLike = {
|
|
role: "assistant",
|
|
content: [],
|
|
api: model.api,
|
|
provider: model.provider,
|
|
model: model.id,
|
|
usage: defaultUsage(),
|
|
stopReason: "error",
|
|
errorMessage: redactCommandCodeErrorText(
|
|
error instanceof Error ? error.message : String(error),
|
|
),
|
|
timestamp: now(),
|
|
}
|
|
stream.push({ type: "error", reason: "error", error: msg })
|
|
stream.end()
|
|
})
|
|
|
|
return stream
|
|
}
|
|
}
|