mirror of
https://github.com/claude-code-best/claude-code.git
synced 2026-06-17 22:05:50 +00:00
bee711f431
* refactor(acp): make bridge SDK message handling type-safe - Add BridgeSDKMessage type alias to eliminate 14 type errors from void-leaked IteratorResult - Replace 18 scattered as-casts with a single uniform as BridgeSDKMessage - Add 68 lines of unit tests covering bridge message handling - Fixes docstring coverage to pass CI threshold * fix(acp): restore IteratorResult return type to nextSdkMessageOrAbort The simplified SDKMessage | undefined return type collapsed two distinct states: generator truly done vs generator yielding undefined. This broke forwardSessionUpdates which needs to distinguish the two — when the generator yields null/undefined it should continue (calling next() again), not break out of the loop. Restored the original IteratorResult<SDKMessage, void> return type so done and yielded-null are distinct again.
1478 lines
45 KiB
TypeScript
1478 lines
45 KiB
TypeScript
/**
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* Bridge module: converts Claude Code's SDKMessage stream events from
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* QueryEngine.submitMessage() into ACP SessionUpdate notifications.
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*
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* Handles all SDKMessage types:
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* - system (compact_boundary, api_retry, local_command_output)
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* - user (message replay)
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* - assistant (full messages with content blocks)
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* - stream_event (real-time streaming: content_block_start/delta)
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* - result (turn termination with usage/cost)
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* - progress (subagent progress)
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* - tool_use_summary
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*/
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import type {
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AgentSideConnection,
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ClientCapabilities,
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ContentBlock,
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PlanEntry,
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SessionNotification,
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SessionUpdate,
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StopReason,
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ToolCallContent,
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ToolCallLocation,
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ToolKind,
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} from '@agentclientprotocol/sdk'
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import type { SDKMessage } from '../../entrypoints/sdk/coreTypes.generated.js'
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import { toDisplayPath, markdownEscape } from './utils.js'
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// ── ToolUseCache ──────────────────────────────────────────────────
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/** Maps tool_use_id → tool metadata for tracked inflight tool calls. */
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export type ToolUseCache = {
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[key: string]: {
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type: 'tool_use' | 'server_tool_use' | 'mcp_tool_use'
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id: string
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name: string
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input: unknown
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}
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}
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// ── Session usage tracking ────────────────────────────────────────
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/** Accumulated token usage across a session, updated per result message. */
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export type SessionUsage = {
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inputTokens: number
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outputTokens: number
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cachedReadTokens: number
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cachedWriteTokens: number
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}
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/** Token usage reported in SDK result messages. */
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type BridgeUsage = {
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input_tokens?: number
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output_tokens?: number
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cache_read_input_tokens?: number
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cache_creation_input_tokens?: number
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}
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/** system-init, compact_boundary, status, api_retry, local_command_output messages. */
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type BridgeSystemMessage = {
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type: 'system'
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subtype?: string
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session_id?: string
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content?: string
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status?: string
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compact_result?: string
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compact_error?: string
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model?: string
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uuid?: string
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[key: string]: unknown
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}
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/** Turn completion message: success with usage, or error with stop_reason. */
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type BridgeResultMessage = {
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type: 'result'
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subtype?: string
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usage?: BridgeUsage
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modelUsage?: Record<string, { contextWindow?: number }>
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total_cost_usd?: number
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is_error?: boolean
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stop_reason?: string | null
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result?: string
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errors?: string[]
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duration_ms?: number
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duration_api_ms?: number
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num_turns?: number
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permission_denials?: unknown[]
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session_id?: string
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[key: string]: unknown
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}
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/** Full assistant response message after the turn completes. */
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type BridgeAssistantMessage = {
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type: 'assistant'
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message?: {
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role?: string
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id?: string
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model?: string
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content?: string | Array<Record<string, unknown>>
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usage?: BridgeUsage | Record<string, unknown>
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stop_reason?: string | null
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[key: string]: unknown
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}
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parent_tool_use_id?: string | null
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uuid?: string
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session_id?: string
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error?: unknown
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[key: string]: unknown
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}
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/** Real-time streaming event (aka partial_assistant in the SDK schema). */
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type BridgeStreamEventMessage = {
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type: 'stream_event'
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event?: { type?: string; [key: string]: unknown }
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message?: Record<string, unknown>
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parent_tool_use_id?: string | null
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session_id?: string
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uuid?: string
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[key: string]: unknown
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}
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/** User prompt message (may include tool_use_result from prior turns). */
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type BridgeUserMessage = {
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type: 'user'
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message?: Record<string, unknown>
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uuid?: string
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isReplay?: boolean
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isMeta?: boolean
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timestamp?: string
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[key: string]: unknown
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}
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/** Subagent or hook progress notification (internal, not an SDK message member). */
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type BridgeProgressMessage = {
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type: 'progress'
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data?: {
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type?: string
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message?: Record<string, unknown>
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[key: string]: unknown
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}
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[key: string]: unknown
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}
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/** Summary of tool calls made during a turn. */
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type BridgeToolUseSummaryMessage = {
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type: 'tool_use_summary'
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summary?: string
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preceding_tool_use_ids?: string[]
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uuid?: string
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session_id?: string
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[key: string]: unknown
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}
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/** File attachment metadata (internal, not an SDK message member). */
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type BridgeAttachmentMessage = {
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type: 'attachment'
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[key: string]: unknown
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}
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/** Compaction boundary marker (type is 'compact_boundary', not 'system'). */
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type BridgeCompactBoundaryMessage = {
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type: 'compact_boundary'
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compact_metadata?: Record<string, unknown>
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[key: string]: unknown
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}
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/** ACP bridge local discriminated union — covers all message shapes consumed by the forwarding loop. */
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type BridgeSDKMessage =
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| BridgeSystemMessage
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| BridgeResultMessage
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| BridgeAssistantMessage
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| BridgeStreamEventMessage
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| BridgeUserMessage
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| BridgeProgressMessage
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| BridgeToolUseSummaryMessage
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| BridgeAttachmentMessage
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| BridgeCompactBoundaryMessage
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const logger: { debug: (...args: unknown[]) => void } = console
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// ── Tool info conversion ──────────────────────────────────────────
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/** Sanitised tool metadata sent to ACP client for tool_call notifications. */
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interface ToolInfo {
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title: string
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kind: ToolKind
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content: ToolCallContent[]
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locations?: ToolCallLocation[]
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}
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export function toolInfoFromToolUse(
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toolUse: { name: string; id: string; input: Record<string, unknown> },
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_supportsTerminalOutput: boolean = false,
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cwd?: string,
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): ToolInfo {
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const name = toolUse.name
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const input = toolUse.input
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switch (name) {
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case 'Agent':
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case 'Task': {
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const description = (input?.description as string | undefined) ?? 'Task'
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const prompt = input?.prompt as string | undefined
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return {
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title: description,
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kind: 'think',
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content: prompt
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? [
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{
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type: 'content' as const,
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content: { type: 'text' as const, text: prompt },
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},
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]
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: [],
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}
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}
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case 'Bash': {
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const command = (input?.command as string | undefined) ?? 'Terminal'
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const description = input?.description as string | undefined
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return {
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title: command,
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kind: 'execute',
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content: _supportsTerminalOutput
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? [{ type: 'terminal' as const, terminalId: toolUse.id }]
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: description
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? [
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{
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type: 'content' as const,
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content: { type: 'text' as const, text: description },
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},
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]
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: [],
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}
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}
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case 'Read': {
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const filePath = (input?.file_path as string | undefined) ?? 'File'
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const offset = input?.offset as number | undefined
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const limit = input?.limit as number | undefined
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let suffix = ''
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if (limit && limit > 0) {
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suffix = ` (${offset ?? 1} - ${(offset ?? 1) + limit - 1})`
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} else if (offset) {
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suffix = ` (from line ${offset})`
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}
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const displayPath = filePath ? toDisplayPath(filePath, cwd) : 'File'
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return {
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title: `Read ${displayPath}${suffix}`,
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kind: 'read',
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locations: filePath ? [{ path: filePath, line: offset ?? 1 }] : [],
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content: [],
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}
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}
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case 'Write': {
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const filePath = (input?.file_path as string | undefined) ?? ''
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const content = (input?.content as string | undefined) ?? ''
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const displayPath = filePath ? toDisplayPath(filePath, cwd) : undefined
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return {
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title: displayPath ? `Write ${displayPath}` : 'Write',
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kind: 'edit',
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content: filePath
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? [
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{
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type: 'diff' as const,
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path: filePath,
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oldText: null,
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newText: content,
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},
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]
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: [
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{
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type: 'content' as const,
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content: { type: 'text' as const, text: content },
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},
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],
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locations: filePath ? [{ path: filePath }] : [],
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}
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}
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case 'Edit': {
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const filePath = (input?.file_path as string | undefined) ?? ''
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const oldString = (input?.old_string as string | undefined) ?? ''
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const newString = (input?.new_string as string | undefined) ?? ''
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const displayPath = filePath ? toDisplayPath(filePath, cwd) : undefined
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return {
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title: displayPath ? `Edit ${displayPath}` : 'Edit',
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kind: 'edit',
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content: filePath
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? [
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{
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type: 'diff' as const,
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path: filePath,
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oldText: oldString || null,
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newText: newString,
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},
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]
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: [],
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locations: filePath ? [{ path: filePath }] : [],
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}
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}
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case 'Glob': {
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const globPath = (input?.path as string | undefined) ?? ''
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const pattern = (input?.pattern as string | undefined) ?? ''
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let label = 'Find'
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if (globPath) label += ` \`${globPath}\``
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if (pattern) label += ` \`${pattern}\``
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return {
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title: label,
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kind: 'search',
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content: [],
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locations: globPath ? [{ path: globPath }] : [],
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}
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}
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case 'Grep': {
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const grepPattern = (input?.pattern as string | undefined) ?? ''
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const grepPath = (input?.path as string | undefined) ?? ''
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let label = 'grep'
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if (input?.['-i']) label += ' -i'
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if (input?.['-n']) label += ' -n'
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if (input?.['-A'] !== undefined) label += ` -A ${input['-A'] as number}`
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if (input?.['-B'] !== undefined) label += ` -B ${input['-B'] as number}`
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if (input?.['-C'] !== undefined) label += ` -C ${input['-C'] as number}`
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if (input?.output_mode === 'files_with_matches') label += ' -l'
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else if (input?.output_mode === 'count') label += ' -c'
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if (input?.head_limit !== undefined)
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label += ` | head -${input.head_limit as number}`
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if (input?.glob) label += ` --include="${input.glob as string}"`
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if (input?.type) label += ` --type=${input.type as string}`
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if (input?.multiline) label += ' -P'
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if (grepPattern) label += ` "${grepPattern}"`
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if (grepPath) label += ` ${grepPath}`
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return {
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title: label,
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kind: 'search',
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content: [],
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}
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}
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case 'WebFetch': {
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const url = (input?.url as string | undefined) ?? ''
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const fetchPrompt = input?.prompt as string | undefined
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return {
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title: url ? `Fetch ${url}` : 'Fetch',
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kind: 'fetch',
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content: fetchPrompt
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? [
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{
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type: 'content' as const,
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content: { type: 'text' as const, text: fetchPrompt },
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},
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]
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: [],
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}
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}
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case 'WebSearch': {
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const query = (input?.query as string | undefined) ?? 'Web search'
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let label = `"${query}"`
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const allowed = input?.allowed_domains as string[] | undefined
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const blocked = input?.blocked_domains as string[] | undefined
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if (allowed && allowed.length > 0)
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label += ` (allowed: ${allowed.join(', ')})`
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if (blocked && blocked.length > 0)
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label += ` (blocked: ${blocked.join(', ')})`
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return {
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title: label,
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kind: 'fetch',
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content: [],
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}
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}
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case 'TodoWrite': {
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const todos = input?.todos as Array<{ content: string }> | undefined
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return {
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title: Array.isArray(todos)
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? `Update TODOs: ${todos.map(t => t.content).join(', ')}`
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: 'Update TODOs',
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kind: 'think',
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content: [],
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}
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}
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case 'ExitPlanMode': {
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const plan = (input as Record<string, unknown>)?.plan as
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| string
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| undefined
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return {
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title: 'Ready to code?',
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kind: 'switch_mode',
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content: plan
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? [
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{
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type: 'content' as const,
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content: { type: 'text' as const, text: plan },
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},
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]
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: [],
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}
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}
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default:
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return {
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title: name || 'Unknown Tool',
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kind: 'other',
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content: [],
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}
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}
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}
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// ── Tool result conversion ────────────────────────────────────────
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export function toolUpdateFromToolResult(
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toolResult: Record<string, unknown>,
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toolUse: { name: string; id: string } | undefined,
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_supportsTerminalOutput: boolean = false,
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): {
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content?: ToolCallContent[]
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title?: string
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_meta?: Record<string, unknown>
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} {
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if (!toolUse) return {}
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const isError = toolResult.is_error === true
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const resultContent = toolResult.content as
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| string
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| Array<Record<string, unknown>>
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| undefined
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// For error results, return error content
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if (isError && resultContent) {
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return toAcpContentUpdate(resultContent, true)
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}
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switch (toolUse.name) {
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case 'Read': {
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if (typeof resultContent === 'string' && resultContent.length > 0) {
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return {
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content: [
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{
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type: 'content' as const,
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content: {
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type: 'text' as const,
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text: markdownEscape(resultContent),
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},
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},
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],
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}
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}
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if (Array.isArray(resultContent) && resultContent.length > 0) {
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return {
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content: resultContent.map((c: Record<string, unknown>) => ({
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type: 'content' as const,
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content:
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c.type === 'text'
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? {
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type: 'text' as const,
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text: markdownEscape(c.text as string),
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}
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: toAcpContentBlock(c, false),
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})),
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}
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}
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return {}
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}
|
|
|
|
case 'Bash': {
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|
let output = ''
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|
let exitCode = isError ? 1 : 0
|
|
const terminalId = String(toolUse.id)
|
|
|
|
// Handle bash_code_execution_result format
|
|
if (
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resultContent &&
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typeof resultContent === 'object' &&
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|
!Array.isArray(resultContent) &&
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|
(resultContent as Record<string, unknown>).type ===
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|
'bash_code_execution_result'
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|
) {
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|
const bashResult = resultContent as Record<string, unknown>
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|
output = [bashResult.stdout, bashResult.stderr]
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|
.filter(Boolean)
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|
.join('\n')
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|
exitCode = (bashResult.return_code as number) ?? (isError ? 1 : 0)
|
|
} else if (typeof resultContent === 'string') {
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|
output = resultContent
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|
} else if (Array.isArray(resultContent) && resultContent.length > 0) {
|
|
output = resultContent
|
|
.map((c: Record<string, unknown>) =>
|
|
c.type === 'text' ? (c.text as string) : '',
|
|
)
|
|
.join('\n')
|
|
}
|
|
|
|
if (_supportsTerminalOutput) {
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|
return {
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|
content: [{ type: 'terminal' as const, terminalId }],
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|
_meta: {
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|
terminal_info: { terminal_id: terminalId },
|
|
terminal_output: { terminal_id: terminalId, data: output },
|
|
terminal_exit: {
|
|
terminal_id: terminalId,
|
|
exit_code: exitCode,
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|
signal: null,
|
|
},
|
|
},
|
|
}
|
|
}
|
|
|
|
if (output.trim()) {
|
|
return {
|
|
content: [
|
|
{
|
|
type: 'content' as const,
|
|
content: {
|
|
type: 'text' as const,
|
|
text: `\`\`\`console\n${output.trimEnd()}\n\`\`\``,
|
|
},
|
|
},
|
|
],
|
|
}
|
|
}
|
|
return {}
|
|
}
|
|
|
|
case 'Edit':
|
|
case 'Write': {
|
|
return {}
|
|
}
|
|
|
|
case 'ExitPlanMode': {
|
|
return { title: 'Exited Plan Mode' }
|
|
}
|
|
|
|
default: {
|
|
return toAcpContentUpdate(resultContent ?? '', isError)
|
|
}
|
|
}
|
|
}
|
|
|
|
function toAcpContentUpdate(
|
|
content: unknown,
|
|
isError: boolean,
|
|
): { content?: ToolCallContent[] } {
|
|
if (Array.isArray(content) && content.length > 0) {
|
|
return {
|
|
content: content.map((c: Record<string, unknown>) => ({
|
|
type: 'content' as const,
|
|
content: toAcpContentBlock(c, isError),
|
|
})),
|
|
}
|
|
}
|
|
if (typeof content === 'string' && content.length > 0) {
|
|
return {
|
|
content: [
|
|
{
|
|
type: 'content' as const,
|
|
content: {
|
|
type: 'text' as const,
|
|
text: isError ? `\`\`\`\n${content}\n\`\`\`` : content,
|
|
},
|
|
},
|
|
],
|
|
}
|
|
}
|
|
return {}
|
|
}
|
|
|
|
function toAcpContentBlock(
|
|
content: Record<string, unknown>,
|
|
isError: boolean,
|
|
): ContentBlock {
|
|
const wrapText = (text: string): ContentBlock => ({
|
|
type: 'text',
|
|
text: isError ? `\`\`\`\n${text}\n\`\`\`` : text,
|
|
})
|
|
|
|
const type = content.type as string
|
|
switch (type) {
|
|
case 'text': {
|
|
const text = content.text as string
|
|
return { type: 'text', text: isError ? `\`\`\`\n${text}\n\`\`\`` : text }
|
|
}
|
|
case 'image': {
|
|
const source = content.source as Record<string, unknown> | undefined
|
|
if (source?.type === 'base64') {
|
|
return {
|
|
type: 'image',
|
|
data: source.data as string,
|
|
mimeType: source.media_type as string,
|
|
}
|
|
}
|
|
return wrapText(
|
|
source?.type === 'url'
|
|
? `[image: ${source.url as string}]`
|
|
: '[image: file reference]',
|
|
)
|
|
}
|
|
case 'tool_reference':
|
|
return wrapText(`Tool: ${content.tool_name as string}`)
|
|
case 'tool_search_tool_search_result': {
|
|
const refs = content.tool_references as
|
|
| Array<{ tool_name: string }>
|
|
| undefined
|
|
return wrapText(
|
|
`Tools found: ${refs?.map(r => r.tool_name).join(', ') || 'none'}`,
|
|
)
|
|
}
|
|
case 'tool_search_tool_result_error':
|
|
return wrapText(
|
|
`Error: ${content.error_code as string}${content.error_message ? ` - ${content.error_message as string}` : ''}`,
|
|
)
|
|
case 'web_search_result':
|
|
return wrapText(`${content.title as string} (${content.url as string})`)
|
|
case 'web_search_tool_result_error':
|
|
return wrapText(`Error: ${content.error_code as string}`)
|
|
case 'web_fetch_result':
|
|
return wrapText(`Fetched: ${content.url as string}`)
|
|
case 'web_fetch_tool_result_error':
|
|
return wrapText(`Error: ${content.error_code as string}`)
|
|
case 'code_execution_result':
|
|
case 'bash_code_execution_result':
|
|
return wrapText(
|
|
`Output: ${(content.stdout as string) || (content.stderr as string) || ''}`,
|
|
)
|
|
case 'code_execution_tool_result_error':
|
|
case 'bash_code_execution_tool_result_error':
|
|
return wrapText(`Error: ${content.error_code as string}`)
|
|
case 'text_editor_code_execution_view_result':
|
|
return wrapText(content.content as string)
|
|
case 'text_editor_code_execution_create_result':
|
|
return wrapText(content.is_file_update ? 'File updated' : 'File created')
|
|
case 'text_editor_code_execution_str_replace_result': {
|
|
const lines = content.lines as string[] | undefined
|
|
return wrapText(lines?.join('\n') || '')
|
|
}
|
|
case 'text_editor_code_execution_tool_result_error':
|
|
return wrapText(
|
|
`Error: ${content.error_code as string}${content.error_message ? ` - ${content.error_message as string}` : ''}`,
|
|
)
|
|
default:
|
|
try {
|
|
return { type: 'text', text: JSON.stringify(content) }
|
|
} catch {
|
|
return { type: 'text', text: '[content]' }
|
|
}
|
|
}
|
|
}
|
|
|
|
// ── Edit tool response → diff ──────────────────────────────────────
|
|
|
|
/** Context lines and diff metadata for one hunk of an Edit tool response. */
|
|
interface EditToolResponseHunk {
|
|
oldStart: number
|
|
oldLines: number
|
|
newStart: number
|
|
newLines: number
|
|
lines: string[]
|
|
}
|
|
|
|
/** Result block for Edit/Write tool responses containing hunks and optional file stats. */
|
|
interface EditToolResponse {
|
|
filePath?: string
|
|
structuredPatch?: EditToolResponseHunk[]
|
|
}
|
|
|
|
/**
|
|
* Builds diff ToolUpdate content from the structured Edit toolResponse.
|
|
* Parses structuredPatch hunks (lines prefixed with -, +, space) into
|
|
* oldText/newText diff pairs.
|
|
*/
|
|
export function toolUpdateFromEditToolResponse(toolResponse: unknown): {
|
|
content?: ToolCallContent[]
|
|
locations?: ToolCallLocation[]
|
|
} {
|
|
if (!toolResponse || typeof toolResponse !== 'object') return {}
|
|
const response = toolResponse as EditToolResponse
|
|
if (!response.filePath || !Array.isArray(response.structuredPatch)) return {}
|
|
|
|
const content: ToolCallContent[] = []
|
|
const locations: ToolCallLocation[] = []
|
|
|
|
for (const { lines, newStart } of response.structuredPatch) {
|
|
const oldText: string[] = []
|
|
const newText: string[] = []
|
|
for (const line of lines) {
|
|
if (line.startsWith('-')) {
|
|
oldText.push(line.slice(1))
|
|
} else if (line.startsWith('+')) {
|
|
newText.push(line.slice(1))
|
|
} else {
|
|
oldText.push(line.slice(1))
|
|
newText.push(line.slice(1))
|
|
}
|
|
}
|
|
if (oldText.length > 0 || newText.length > 0) {
|
|
locations.push({ path: response.filePath, line: newStart })
|
|
content.push({
|
|
type: 'diff',
|
|
path: response.filePath,
|
|
oldText: oldText.join('\n') || null,
|
|
newText: newText.join('\n'),
|
|
})
|
|
}
|
|
}
|
|
|
|
const result: {
|
|
content?: ToolCallContent[]
|
|
locations?: ToolCallLocation[]
|
|
} = {}
|
|
if (content.length > 0) result.content = content
|
|
if (locations.length > 0) result.locations = locations
|
|
return result
|
|
}
|
|
|
|
export function nextSdkMessageOrAbort(
|
|
sdkMessages: AsyncGenerator<SDKMessage, void, unknown>,
|
|
abortSignal: AbortSignal,
|
|
): Promise<IteratorResult<SDKMessage, void>> {
|
|
if (abortSignal.aborted) {
|
|
return Promise.resolve({ done: true, value: undefined })
|
|
}
|
|
let abortHandler: (() => void) | undefined
|
|
const abortPromise = new Promise<IteratorResult<SDKMessage, void>>(
|
|
resolve => {
|
|
abortHandler = () => resolve({ done: true, value: undefined })
|
|
abortSignal.addEventListener('abort', abortHandler, { once: true })
|
|
},
|
|
)
|
|
return Promise.race([sdkMessages.next(), abortPromise]).finally(() => {
|
|
if (abortHandler) {
|
|
abortSignal.removeEventListener('abort', abortHandler)
|
|
}
|
|
})
|
|
}
|
|
|
|
// ── Main forwarding function ──────────────────────────────────────
|
|
|
|
/**
|
|
* Iterates SDKMessages from QueryEngine.submitMessage(), converts each
|
|
* to ACP SessionUpdate notifications, and sends them via conn.sessionUpdate().
|
|
* Returns the final StopReason and accumulated usage for the prompt turn.
|
|
*/
|
|
export async function forwardSessionUpdates(
|
|
sessionId: string,
|
|
sdkMessages: AsyncGenerator<SDKMessage, void, unknown>,
|
|
conn: AgentSideConnection,
|
|
abortSignal: AbortSignal,
|
|
toolUseCache: ToolUseCache,
|
|
clientCapabilities?: ClientCapabilities,
|
|
cwd?: string,
|
|
isCancelled?: () => boolean,
|
|
): Promise<{ stopReason: StopReason; usage?: SessionUsage }> {
|
|
let stopReason: StopReason = 'end_turn'
|
|
const accumulatedUsage: SessionUsage = {
|
|
inputTokens: 0,
|
|
outputTokens: 0,
|
|
cachedReadTokens: 0,
|
|
cachedWriteTokens: 0,
|
|
}
|
|
|
|
// Track last assistant usage/model for context window size computation
|
|
let lastAssistantTotalUsage: number | null = null
|
|
let lastAssistantModel: string | null = null
|
|
let lastContextWindowSize = 200000
|
|
let streamingActive = false
|
|
|
|
try {
|
|
while (!abortSignal.aborted) {
|
|
// Race the next message against the abort signal so we unblock
|
|
// immediately when cancelled, even if the generator is waiting for
|
|
// a slow API response.
|
|
const nextResult = await nextSdkMessageOrAbort(sdkMessages, abortSignal)
|
|
if (nextResult.done || abortSignal.aborted) break
|
|
const rawMsg = nextResult.value
|
|
if (rawMsg == null) continue
|
|
const msg = rawMsg as BridgeSDKMessage
|
|
|
|
switch (msg.type) {
|
|
// ── System messages ────────────────────────────────────────
|
|
case 'system': {
|
|
const subtype = msg.subtype
|
|
|
|
if (subtype === 'compact_boundary') {
|
|
// Reset assistant usage tracking after compaction
|
|
lastAssistantTotalUsage = 0
|
|
// Send usage reset after compaction
|
|
await conn.sessionUpdate({
|
|
sessionId,
|
|
update: {
|
|
sessionUpdate: 'usage_update',
|
|
used: 0,
|
|
size: lastContextWindowSize,
|
|
},
|
|
})
|
|
await conn.sessionUpdate({
|
|
sessionId,
|
|
update: {
|
|
sessionUpdate: 'agent_message_chunk',
|
|
content: { type: 'text', text: '\n\nCompacting completed.' },
|
|
},
|
|
})
|
|
}
|
|
// api_retry, local_command_output — skip for now
|
|
break
|
|
}
|
|
|
|
// ── Result messages ────────────────────────────────────────
|
|
case 'result': {
|
|
const usage = msg.usage
|
|
|
|
if (usage) {
|
|
accumulatedUsage.inputTokens += usage.input_tokens ?? 0
|
|
accumulatedUsage.outputTokens += usage.output_tokens ?? 0
|
|
accumulatedUsage.cachedReadTokens +=
|
|
usage.cache_read_input_tokens ?? 0
|
|
accumulatedUsage.cachedWriteTokens +=
|
|
usage.cache_creation_input_tokens ?? 0
|
|
}
|
|
|
|
// Resolve context window size from modelUsage via prefix matching
|
|
const modelUsage = msg.modelUsage
|
|
if (modelUsage && lastAssistantModel) {
|
|
const match = getMatchingModelUsage(modelUsage, lastAssistantModel)
|
|
if (match?.contextWindow) {
|
|
lastContextWindowSize = match.contextWindow
|
|
}
|
|
}
|
|
|
|
// Send usage_update — use lastAssistantTotalUsage if available
|
|
// (more accurate than accumulatedUsage which may include background tasks)
|
|
const usedTokens =
|
|
lastAssistantTotalUsage ??
|
|
accumulatedUsage.inputTokens +
|
|
accumulatedUsage.outputTokens +
|
|
accumulatedUsage.cachedReadTokens +
|
|
accumulatedUsage.cachedWriteTokens
|
|
|
|
const totalCostUsd = msg.total_cost_usd
|
|
await conn.sessionUpdate({
|
|
sessionId,
|
|
update: {
|
|
sessionUpdate: 'usage_update',
|
|
used: usedTokens,
|
|
size: lastContextWindowSize,
|
|
cost:
|
|
totalCostUsd != null
|
|
? { amount: totalCostUsd, currency: 'USD' }
|
|
: undefined,
|
|
},
|
|
})
|
|
|
|
// Determine stop reason
|
|
const subtype = msg.subtype
|
|
const isError = msg.is_error
|
|
|
|
if (abortSignal.aborted) {
|
|
stopReason = 'cancelled'
|
|
break
|
|
}
|
|
|
|
switch (subtype) {
|
|
case 'success': {
|
|
const stopReasonStr = msg.stop_reason
|
|
if (stopReasonStr === 'max_tokens') {
|
|
stopReason = 'max_tokens'
|
|
}
|
|
if (isError) {
|
|
// Report error as end_turn
|
|
stopReason = 'end_turn'
|
|
}
|
|
break
|
|
}
|
|
case 'error_during_execution': {
|
|
if (msg.stop_reason === 'max_tokens') {
|
|
stopReason = 'max_tokens'
|
|
} else if (isError) {
|
|
stopReason = 'end_turn'
|
|
} else {
|
|
stopReason = 'end_turn'
|
|
}
|
|
break
|
|
}
|
|
case 'error_max_budget_usd':
|
|
case 'error_max_turns':
|
|
case 'error_max_structured_output_retries':
|
|
if (isError) {
|
|
stopReason = 'max_turn_requests'
|
|
} else {
|
|
stopReason = 'max_turn_requests'
|
|
}
|
|
break
|
|
}
|
|
break
|
|
}
|
|
|
|
// ── Stream events ──────────────────────────────────────────
|
|
case 'stream_event': {
|
|
const notifications = streamEventToAcpNotifications(
|
|
msg,
|
|
sessionId,
|
|
toolUseCache,
|
|
conn,
|
|
{
|
|
clientCapabilities,
|
|
cwd,
|
|
},
|
|
)
|
|
for (const notification of notifications) {
|
|
await conn.sessionUpdate(notification)
|
|
}
|
|
streamingActive = true
|
|
break
|
|
}
|
|
|
|
// ── Assistant messages ─────────────────────────────────────
|
|
case 'assistant': {
|
|
// Track last assistant total usage for context window computation
|
|
// (only for top-level messages, not subagents)
|
|
const assistantMsg = msg.message
|
|
const parentToolUseId = msg.parent_tool_use_id
|
|
if (assistantMsg?.usage && parentToolUseId === null) {
|
|
const usage = assistantMsg.usage
|
|
lastAssistantTotalUsage =
|
|
(typeof usage.input_tokens === 'number'
|
|
? usage.input_tokens
|
|
: 0) +
|
|
(typeof usage.output_tokens === 'number'
|
|
? usage.output_tokens
|
|
: 0) +
|
|
(typeof usage.cache_read_input_tokens === 'number'
|
|
? usage.cache_read_input_tokens
|
|
: 0) +
|
|
(typeof usage.cache_creation_input_tokens === 'number'
|
|
? usage.cache_creation_input_tokens
|
|
: 0)
|
|
}
|
|
// Track the current top-level model for context window size lookup
|
|
if (
|
|
parentToolUseId === null &&
|
|
assistantMsg?.model &&
|
|
assistantMsg.model !== '<synthetic>'
|
|
) {
|
|
lastAssistantModel = assistantMsg.model
|
|
}
|
|
|
|
const notifications = assistantMessageToAcpNotifications(
|
|
msg,
|
|
sessionId,
|
|
toolUseCache,
|
|
conn,
|
|
{
|
|
clientCapabilities,
|
|
cwd,
|
|
parentToolUseId,
|
|
streamingActive,
|
|
},
|
|
)
|
|
for (const notification of notifications) {
|
|
await conn.sessionUpdate(notification)
|
|
}
|
|
break
|
|
}
|
|
|
|
// ── User messages ──────────────────────────────────────────
|
|
case 'user': {
|
|
// In ACP mode, user messages from replay/synthetic are typically skipped
|
|
// The client already knows what the user sent
|
|
break
|
|
}
|
|
|
|
// ── Progress messages ──────────────────────────────────────
|
|
case 'progress': {
|
|
const progressData = msg.data
|
|
if (!progressData) break
|
|
|
|
// Handle agent/skill subagent progress
|
|
const progressType = progressData.type
|
|
if (
|
|
progressType === 'agent_progress' ||
|
|
progressType === 'skill_progress'
|
|
) {
|
|
const progressMessage = progressData.message
|
|
if (progressMessage) {
|
|
const content = progressMessage.content as
|
|
| Array<Record<string, unknown>>
|
|
| undefined
|
|
if (content) {
|
|
for (const block of content) {
|
|
if (block.type === 'text') {
|
|
await conn.sessionUpdate({
|
|
sessionId,
|
|
update: {
|
|
sessionUpdate: 'agent_message_chunk',
|
|
content: { type: 'text', text: block.text as string },
|
|
},
|
|
})
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
break
|
|
}
|
|
|
|
// ── Tool use summary ───────────────────────────────────────
|
|
case 'tool_use_summary': {
|
|
// Skip for now — not critical for basic functionality
|
|
break
|
|
}
|
|
|
|
// ── Attachment messages ────────────────────────────────────
|
|
case 'attachment': {
|
|
// Skip — handled by QueryEngine internally
|
|
break
|
|
}
|
|
|
|
// ── Compact boundary ───────────────────────────────────────
|
|
case 'compact_boundary': {
|
|
lastAssistantTotalUsage = 0
|
|
await conn.sessionUpdate({
|
|
sessionId,
|
|
update: {
|
|
sessionUpdate: 'usage_update',
|
|
used: 0,
|
|
size: lastContextWindowSize,
|
|
},
|
|
})
|
|
await conn.sessionUpdate({
|
|
sessionId,
|
|
update: {
|
|
sessionUpdate: 'agent_message_chunk',
|
|
content: { type: 'text', text: '\n\nCompacting completed.' },
|
|
},
|
|
})
|
|
break
|
|
}
|
|
|
|
default:
|
|
logger.debug('Ignoring unknown SDK message type')
|
|
break
|
|
}
|
|
}
|
|
|
|
// If we exited the loop because abort fired or cancel was requested, return cancelled
|
|
if (abortSignal.aborted || isCancelled?.()) {
|
|
return { stopReason: 'cancelled', usage: accumulatedUsage }
|
|
}
|
|
} catch (err: unknown) {
|
|
if (abortSignal.aborted) {
|
|
return { stopReason: 'cancelled', usage: accumulatedUsage }
|
|
}
|
|
throw err
|
|
}
|
|
|
|
return { stopReason, usage: accumulatedUsage }
|
|
}
|
|
|
|
// ── Assistant message conversion ──────────────────────────────────
|
|
|
|
function assistantMessageToAcpNotifications(
|
|
msg: SDKMessage,
|
|
sessionId: string,
|
|
toolUseCache: ToolUseCache,
|
|
conn: AgentSideConnection,
|
|
options?: {
|
|
clientCapabilities?: ClientCapabilities
|
|
parentToolUseId?: string | null
|
|
cwd?: string
|
|
streamingActive?: boolean
|
|
},
|
|
): SessionNotification[] {
|
|
const message = msg.message as Record<string, unknown> | undefined
|
|
if (!message) return []
|
|
|
|
const content = message.content as
|
|
| string
|
|
| Array<Record<string, unknown>>
|
|
| undefined
|
|
if (!content) return []
|
|
|
|
// If content is a string, treat as text
|
|
if (typeof content === 'string') {
|
|
return [
|
|
{
|
|
sessionId,
|
|
update: {
|
|
sessionUpdate: 'agent_message_chunk',
|
|
content: { type: 'text', text: content },
|
|
},
|
|
},
|
|
]
|
|
}
|
|
|
|
// When streaming is active, text/thinking were already sent via stream_event
|
|
// messages. Filter them out to avoid duplicate agent_message_chunk /
|
|
// agent_thought_chunk notifications. String content (synthetic messages)
|
|
// is unaffected — those have no corresponding stream_events.
|
|
const contentToProcess = options?.streamingActive
|
|
? content.filter(
|
|
block => block.type !== 'text' && block.type !== 'thinking',
|
|
)
|
|
: content
|
|
|
|
if (contentToProcess.length === 0) return []
|
|
|
|
return toAcpNotifications(
|
|
contentToProcess,
|
|
'assistant',
|
|
sessionId,
|
|
toolUseCache,
|
|
conn,
|
|
undefined,
|
|
options,
|
|
)
|
|
}
|
|
|
|
// ── Stream event conversion ───────────────────────────────────────
|
|
|
|
function streamEventToAcpNotifications(
|
|
msg: SDKMessage,
|
|
sessionId: string,
|
|
toolUseCache: ToolUseCache,
|
|
conn: AgentSideConnection,
|
|
options?: {
|
|
clientCapabilities?: ClientCapabilities
|
|
cwd?: string
|
|
streamingActive?: boolean
|
|
},
|
|
): SessionNotification[] {
|
|
const event = (msg as unknown as { event: Record<string, unknown> }).event
|
|
if (!event) return []
|
|
|
|
switch (event.type as string) {
|
|
case 'content_block_start': {
|
|
const contentBlock = event.content_block as
|
|
| Record<string, unknown>
|
|
| undefined
|
|
if (!contentBlock) return []
|
|
return toAcpNotifications(
|
|
[contentBlock],
|
|
'assistant',
|
|
sessionId,
|
|
toolUseCache,
|
|
conn,
|
|
undefined,
|
|
{
|
|
clientCapabilities: options?.clientCapabilities,
|
|
parentToolUseId: msg.parent_tool_use_id as string | null | undefined,
|
|
cwd: options?.cwd,
|
|
},
|
|
)
|
|
}
|
|
case 'content_block_delta': {
|
|
const delta = event.delta as Record<string, unknown> | undefined
|
|
if (!delta) return []
|
|
return toAcpNotifications(
|
|
[delta],
|
|
'assistant',
|
|
sessionId,
|
|
toolUseCache,
|
|
conn,
|
|
undefined,
|
|
{
|
|
clientCapabilities: options?.clientCapabilities,
|
|
parentToolUseId: msg.parent_tool_use_id as string | null | undefined,
|
|
cwd: options?.cwd,
|
|
},
|
|
)
|
|
}
|
|
// No content to emit
|
|
case 'message_start':
|
|
case 'message_delta':
|
|
case 'message_stop':
|
|
case 'content_block_stop':
|
|
return []
|
|
|
|
default:
|
|
return []
|
|
}
|
|
}
|
|
|
|
// ── Core content block → ACP notification conversion ──────────────
|
|
|
|
function toAcpNotifications(
|
|
content: Array<Record<string, unknown>>,
|
|
role: 'assistant' | 'user',
|
|
sessionId: string,
|
|
toolUseCache: ToolUseCache,
|
|
_conn: AgentSideConnection,
|
|
_logger?: { error: (...args: unknown[]) => void },
|
|
options?: {
|
|
registerHooks?: boolean
|
|
clientCapabilities?: ClientCapabilities
|
|
parentToolUseId?: string | null
|
|
cwd?: string
|
|
streamingActive?: boolean
|
|
},
|
|
): SessionNotification[] {
|
|
const output: SessionNotification[] = []
|
|
|
|
for (const chunk of content) {
|
|
const chunkType = chunk.type as string
|
|
let update: SessionUpdate | null = null
|
|
|
|
switch (chunkType) {
|
|
case 'text':
|
|
case 'text_delta': {
|
|
const text = (chunk.text as string) ?? ''
|
|
update = {
|
|
sessionUpdate:
|
|
role === 'assistant' ? 'agent_message_chunk' : 'user_message_chunk',
|
|
content: { type: 'text', text },
|
|
}
|
|
break
|
|
}
|
|
|
|
case 'thinking':
|
|
case 'thinking_delta': {
|
|
const thinking = (chunk.thinking as string) ?? ''
|
|
update = {
|
|
sessionUpdate: 'agent_thought_chunk',
|
|
content: { type: 'text', text: thinking },
|
|
}
|
|
break
|
|
}
|
|
|
|
case 'image': {
|
|
const source = chunk.source as Record<string, unknown> | undefined
|
|
if (source?.type === 'base64') {
|
|
update = {
|
|
sessionUpdate:
|
|
role === 'assistant'
|
|
? 'agent_message_chunk'
|
|
: 'user_message_chunk',
|
|
content: {
|
|
type: 'image',
|
|
data: source.data as string,
|
|
mimeType: source.media_type as string,
|
|
},
|
|
}
|
|
}
|
|
break
|
|
}
|
|
|
|
case 'tool_use':
|
|
case 'server_tool_use':
|
|
case 'mcp_tool_use': {
|
|
const toolUseId = (chunk.id as string) ?? ''
|
|
const toolName = (chunk.name as string) ?? 'unknown'
|
|
const toolInput = chunk.input as Record<string, unknown> | undefined
|
|
const alreadyCached = toolUseId in toolUseCache
|
|
|
|
// Cache this tool_use for later matching
|
|
toolUseCache[toolUseId] = {
|
|
type: chunkType as 'tool_use' | 'server_tool_use' | 'mcp_tool_use',
|
|
id: toolUseId,
|
|
name: toolName,
|
|
input: toolInput,
|
|
}
|
|
|
|
// TodoWrite → plan update
|
|
if (toolName === 'TodoWrite') {
|
|
const todos = (toolInput as Record<string, unknown>)?.todos as
|
|
| Array<{ content: string; status: string }>
|
|
| undefined
|
|
if (Array.isArray(todos)) {
|
|
const entries: PlanEntry[] = todos.map(todo => ({
|
|
content: todo.content,
|
|
status: normalizePlanStatus(todo.status),
|
|
priority: 'medium',
|
|
}))
|
|
update = {
|
|
sessionUpdate: 'plan',
|
|
entries,
|
|
}
|
|
}
|
|
} else {
|
|
// Regular tool call
|
|
const rawInput = toolInput ? { ...toolInput } : {}
|
|
|
|
if (alreadyCached) {
|
|
// Second encounter — send as tool_call_update
|
|
update = {
|
|
_meta: {
|
|
claudeCode: { toolName },
|
|
},
|
|
toolCallId: toolUseId,
|
|
sessionUpdate: 'tool_call_update',
|
|
rawInput,
|
|
...toolInfoFromToolUse(
|
|
{ name: toolName, id: toolUseId, input: toolInput ?? {} },
|
|
false,
|
|
options?.cwd,
|
|
),
|
|
}
|
|
} else {
|
|
// First encounter — send as tool_call
|
|
update = {
|
|
_meta: {
|
|
claudeCode: { toolName },
|
|
},
|
|
toolCallId: toolUseId,
|
|
sessionUpdate: 'tool_call',
|
|
rawInput,
|
|
status: 'pending',
|
|
...toolInfoFromToolUse(
|
|
{ name: toolName, id: toolUseId, input: toolInput ?? {} },
|
|
false,
|
|
options?.cwd,
|
|
),
|
|
}
|
|
}
|
|
}
|
|
break
|
|
}
|
|
|
|
case 'tool_result':
|
|
case 'mcp_tool_result': {
|
|
const toolUseId = (chunk.tool_use_id as string | undefined) ?? ''
|
|
const toolUse = toolUseCache[toolUseId]
|
|
if (!toolUse) break
|
|
|
|
if (toolUse.name !== 'TodoWrite') {
|
|
const toolUpdate = toolUpdateFromToolResult(
|
|
chunk as unknown as Record<string, unknown>,
|
|
{ name: toolUse.name, id: toolUse.id },
|
|
false,
|
|
)
|
|
|
|
update = {
|
|
_meta: {
|
|
claudeCode: { toolName: toolUse.name },
|
|
},
|
|
toolCallId: toolUseId,
|
|
sessionUpdate: 'tool_call_update',
|
|
status:
|
|
(chunk.is_error as boolean | undefined) === true
|
|
? 'failed'
|
|
: 'completed',
|
|
rawOutput: chunk.content,
|
|
...toolUpdate,
|
|
}
|
|
}
|
|
break
|
|
}
|
|
|
|
case 'redacted_thinking':
|
|
case 'input_json_delta':
|
|
case 'citations_delta':
|
|
case 'signature_delta':
|
|
case 'container_upload':
|
|
case 'compaction':
|
|
case 'compaction_delta':
|
|
// Skip these types
|
|
break
|
|
}
|
|
|
|
if (update) {
|
|
// Add parentToolUseId to _meta if present
|
|
if (options?.parentToolUseId) {
|
|
const existingMeta = (update as Record<string, unknown>)._meta as
|
|
| Record<string, unknown>
|
|
| undefined
|
|
;(update as Record<string, unknown>)._meta = {
|
|
...existingMeta,
|
|
claudeCode: {
|
|
...((existingMeta?.claudeCode as Record<string, unknown>) ?? {}),
|
|
parentToolUseId: options.parentToolUseId,
|
|
},
|
|
}
|
|
}
|
|
output.push({ sessionId, update })
|
|
}
|
|
}
|
|
|
|
return output
|
|
}
|
|
|
|
function normalizePlanStatus(
|
|
status: string,
|
|
): 'pending' | 'in_progress' | 'completed' {
|
|
if (status === 'in_progress') return 'in_progress'
|
|
if (status === 'completed') return 'completed'
|
|
return 'pending'
|
|
}
|
|
|
|
// ── History replay ──────────────────────────────────────────────────
|
|
|
|
/**
|
|
* Replays conversation history messages to the ACP client as session updates.
|
|
* Used when resuming/loading a session to show the client the previous conversation.
|
|
*/
|
|
export async function replayHistoryMessages(
|
|
sessionId: string,
|
|
messages: Array<Record<string, unknown>>,
|
|
conn: AgentSideConnection,
|
|
toolUseCache: ToolUseCache,
|
|
clientCapabilities?: ClientCapabilities,
|
|
cwd?: string,
|
|
): Promise<void> {
|
|
for (const rawMsg of messages) {
|
|
const msg = rawMsg as BridgeSDKMessage
|
|
// Skip non-conversation messages
|
|
if (msg.type !== 'user' && msg.type !== 'assistant') {
|
|
logger.debug('Ignoring unknown SDK message type')
|
|
continue
|
|
}
|
|
// Skip meta messages (synthetic continuation prompts)
|
|
if (msg.isMeta === true) continue
|
|
|
|
const messageData = msg.message
|
|
const content = messageData?.content
|
|
if (!content) continue
|
|
|
|
const role: 'assistant' | 'user' =
|
|
msg.type === 'assistant' ? 'assistant' : 'user'
|
|
|
|
if (typeof content === 'string') {
|
|
if (!content.trim()) continue
|
|
await conn.sessionUpdate({
|
|
sessionId,
|
|
update: {
|
|
sessionUpdate:
|
|
role === 'assistant' ? 'agent_message_chunk' : 'user_message_chunk',
|
|
content: { type: 'text', text: content },
|
|
},
|
|
})
|
|
continue
|
|
}
|
|
|
|
if (Array.isArray(content)) {
|
|
const notifications = toAcpNotifications(
|
|
content as Array<Record<string, unknown>>,
|
|
role,
|
|
sessionId,
|
|
toolUseCache,
|
|
conn,
|
|
undefined,
|
|
{ clientCapabilities, cwd },
|
|
)
|
|
for (const notification of notifications) {
|
|
await conn.sessionUpdate(notification)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// ── Model usage matching ──────────────────────────────────────────
|
|
|
|
function commonPrefixLength(a: string, b: string): number {
|
|
let i = 0
|
|
const maxLen = Math.min(a.length, b.length)
|
|
while (i < maxLen && a[i] === b[i]) i++
|
|
return i
|
|
}
|
|
|
|
function getMatchingModelUsage(
|
|
modelUsage: Record<string, { contextWindow?: number }>,
|
|
currentModel: string,
|
|
): { contextWindow?: number } | null {
|
|
let bestKey: string | null = null
|
|
let bestLen = 0
|
|
|
|
for (const key of Object.keys(modelUsage)) {
|
|
const len = commonPrefixLength(key, currentModel)
|
|
if (len > bestLen) {
|
|
bestLen = len
|
|
bestKey = key
|
|
}
|
|
}
|
|
|
|
return bestKey ? (modelUsage[bestKey] ?? null) : null
|
|
}
|