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579 lines (525 loc) · 18.1 KB
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import { mkdirSync, writeFileSync } from "node:fs";
import { join } from "node:path";
import { log } from "../utils/cli.ts";
import { spawn } from "../utils/subprocess.ts";
import { addInstructions } from "./instructions.ts";
import {
agent,
type ConfigureMcpServersParams,
createAgentEnv,
installFromNpmTarball,
setupProcessAgentEnv,
} from "./shared.ts";
export const opencode = agent({
name: "opencode",
install: async () => {
return await installFromNpmTarball({
packageName: "opencode-ai",
version: "latest",
executablePath: "bin/opencode",
installDependencies: true,
});
},
run: async ({ payload, apiKey: _apiKey, apiKeys, mcpServers, cliPath, repo }) => {
// 1. configure home/config directory
const tempHome = process.env.PULLFROG_TEMP_DIR!;
const configDir = join(tempHome, ".config", "opencode");
mkdirSync(configDir, { recursive: true });
configureOpenCode({
mcpServers,
sandbox: payload.sandbox ?? false,
isPublicRepo: repo.isPublic,
});
const prompt = addInstructions({ payload, repo });
log.group("Full prompt", () => log.info(prompt));
// message positional must come right after "run", before flags
const args = ["run", prompt, "--format", "json"];
if (payload.sandbox) {
log.info("🔒 sandbox mode enabled: restricting to read-only operations");
}
// 6. set up environment
setupProcessAgentEnv({ HOME: tempHome });
// SECURITY: build env vars from whitelisted base env to prevent API key leakage
// this prevents leaking other API keys (ANTHROPIC, GEMINI, etc.) to OpenCode subprocess
// XDG_CONFIG_HOME must be set because GitHub Actions sets it to a different path,
// and OpenCode follows XDG spec (checks XDG_CONFIG_HOME before falling back to $HOME/.config)
const env: Record<string, string> = {
...createAgentEnv({ HOME: tempHome }),
XDG_CONFIG_HOME: join(tempHome, ".config"),
};
// OpenCode doesn't support GitHub App installation tokens
delete env.GITHUB_TOKEN;
// add API keys from apiKeys object
for (const [key, value] of Object.entries(apiKeys || {})) {
const upperKey = key.toUpperCase();
env[upperKey] = value;
// also set GOOGLE_GENERATIVE_AI_API_KEY for Google provider compatibility
if (upperKey === "GEMINI_API_KEY") {
env.GOOGLE_GENERATIVE_AI_API_KEY = value;
}
}
// run OpenCode in the repository directory (process.cwd() is set to GITHUB_WORKSPACE or repo dir)
const repoDir = process.cwd();
log.info(`🚀 Starting OpenCode CLI: ${cliPath} ${args.join(" ")}`);
log.info(`📁 Working directory: ${repoDir}`);
log.debug(`🏠 HOME: ${env.HOME}`);
log.debug(`📋 XDG_CONFIG_HOME: ${env.XDG_CONFIG_HOME}`);
const startTime = Date.now();
let lastActivityTime = startTime;
let eventCount = 0;
let output = "";
let stdoutBuffer = ""; // buffer for incomplete lines across chunks
const result = await spawn({
cmd: cliPath,
args,
cwd: repoDir,
env,
timeout: 600000, // 10 minutes timeout to prevent infinite hangs
stdio: ["ignore", "pipe", "pipe"],
onStdout: async (chunk) => {
const text = chunk.toString();
output += text;
// buffer incomplete lines across chunks (NDJSON format)
stdoutBuffer += text;
const lines = stdoutBuffer.split("\n");
// keep the last element (may be incomplete) in the buffer
stdoutBuffer = lines.pop() || "";
for (const line of lines) {
const trimmed = line.trim();
if (!trimmed) {
continue;
}
try {
const event = JSON.parse(trimmed) as OpenCodeEvent;
eventCount++;
// debug log all events to diagnose ordering and missing MCP/bash tool calls
log.debug(JSON.stringify(event, null, 2));
const timeSinceLastActivity = Date.now() - lastActivityTime;
if (timeSinceLastActivity > 10000) {
const activeToolCalls = toolCallTimings.size;
const toolCallInfo =
activeToolCalls > 0
? ` (waiting for ${activeToolCalls} tool call${activeToolCalls > 1 ? "s" : ""})`
: " (OpenCode may be processing internally - LLM calls, planning, etc.)";
log.warning(
`⚠️ No activity for ${(timeSinceLastActivity / 1000).toFixed(1)}s${toolCallInfo} (${eventCount} events processed so far)`
);
}
lastActivityTime = Date.now();
const handler = messageHandlers[event.type as keyof typeof messageHandlers];
if (handler) {
await handler(event as never);
} else {
// log unhandled event types for visibility
log.info(
`📋 OpenCode event (unhandled): type=${event.type}, data=${JSON.stringify(event).substring(0, 500)}`
);
}
} catch {
// non-JSON lines are ignored (might be debug output from opencode)
log.debug(`» non-JSON stdout line: ${trimmed.substring(0, 200)}`);
}
}
},
onStderr: (chunk) => {
try {
const parsed = JSON.parse(chunk);
log.debug(JSON.stringify(parsed, null, 2));
} catch {
// if not JSON, fall through to regular error logging
}
const trimmed = chunk.trim();
if (trimmed) {
log.warning(trimmed);
}
},
});
const duration = Date.now() - startTime;
log.info(`✅ OpenCode CLI completed in ${duration}ms with exit code ${result.exitCode}`);
// 8. log tokens if they weren't logged yet (fallback if result event wasn't emitted)
if (!tokensLogged && (accumulatedTokens.input > 0 || accumulatedTokens.output > 0)) {
const totalTokens = accumulatedTokens.input + accumulatedTokens.output;
await log.summaryTable([
[
{ data: "Input Tokens", header: true },
{ data: "Output Tokens", header: true },
{ data: "Total Tokens", header: true },
],
[String(accumulatedTokens.input), String(accumulatedTokens.output), String(totalTokens)],
]);
}
// 9. return result
if (result.exitCode !== 0) {
const errorMessage =
result.stderr || result.stdout || "Unknown error - no output from OpenCode CLI";
log.error(`OpenCode CLI exited with code ${result.exitCode}: ${errorMessage}`);
log.debug(`OpenCode stdout: ${result.stdout?.substring(0, 500)}`);
log.debug(`OpenCode stderr: ${result.stderr?.substring(0, 500)}`);
return {
success: false,
output: finalOutput || output,
error: errorMessage,
};
}
return {
success: true,
output: finalOutput || output,
};
},
});
interface ConfigureOpenCodeParams {
mcpServers: ConfigureMcpServersParams["mcpServers"];
sandbox: boolean;
isPublicRepo: boolean;
}
/**
* Configure OpenCode via opencode.json config file.
* Builds complete config with MCP servers and permissions in a single write to avoid race conditions.
*/
function configureOpenCode({ mcpServers, sandbox, isPublicRepo }: ConfigureOpenCodeParams): void {
const tempHome = process.env.PULLFROG_TEMP_DIR!;
const configDir = join(tempHome, ".config", "opencode");
mkdirSync(configDir, { recursive: true });
const configPath = join(configDir, "opencode.json");
// build MCP servers config
const opencodeMcpServers: Record<string, { type: "remote"; url: string }> = {};
for (const [serverName, serverConfig] of Object.entries(mcpServers)) {
if (serverConfig.type !== "http") {
log.error(
`unsupported MCP server type for OpenCode: ${(serverConfig as never as { type: string }).type || "unknown"}`
);
throw new Error(
`Unsupported MCP server type for OpenCode: ${(serverConfig as never as { type: string }).type || "unknown"}`
);
}
opencodeMcpServers[serverName] = {
type: "remote",
url: serverConfig.url,
};
}
// SECURITY: For PUBLIC repos, OpenCode spawns subprocesses with full process.env, leaking API keys.
// disable native bash; agents use MCP bash tool which filters secrets.
// for private repos, native bash is allowed.
const bashPermission = isPublicRepo ? "deny" : "allow";
const permission = sandbox
? {
edit: "deny",
bash: "deny",
webfetch: "deny",
doom_loop: "allow",
external_directory: "allow",
}
: {
edit: "allow",
bash: bashPermission,
webfetch: "allow",
doom_loop: "allow",
external_directory: "allow",
};
// build complete config in one object
const config = {
mcp: opencodeMcpServers,
permission,
};
const configJson = JSON.stringify(config, null, 2);
try {
writeFileSync(configPath, configJson, "utf-8");
} catch (error) {
log.error(
`failed to write OpenCode config to ${configPath}: ${error instanceof Error ? error.message : String(error)}`
);
throw error;
}
log.info(`» OpenCode config written to ${configPath} (sandbox: ${sandbox})`);
log.debug(`OpenCode config contents:\n${configJson}`);
}
////////////////////////////////////////////
//////////// EVENT HANDLERS ////////////
////////////////////////////////////////////
// opencode cli event types inferred from json output format
interface OpenCodeInitEvent {
type: "init";
timestamp?: string;
session_id?: string;
model?: string;
[key: string]: unknown;
}
interface OpenCodeMessageEvent {
type: "message";
timestamp?: string;
role?: "user" | "assistant";
content?: string;
delta?: boolean;
[key: string]: unknown;
}
interface OpenCodeTextEvent {
type: "text";
timestamp?: string;
sessionID?: string;
part?: {
id?: string;
type?: string;
text?: string;
[key: string]: unknown;
};
[key: string]: unknown;
}
interface OpenCodeStepStartEvent {
type: "step_start";
timestamp?: string;
sessionID?: string;
part?: {
id?: string;
type?: string;
[key: string]: unknown;
};
[key: string]: unknown;
}
interface OpenCodeStepFinishEvent {
type: "step_finish";
timestamp?: string;
sessionID?: string;
part?: {
id?: string;
type?: string;
reason?: string;
cost?: number;
tokens?: {
input?: number;
output?: number;
reasoning?: number;
cache?: {
read?: number;
write?: number;
};
};
[key: string]: unknown;
};
[key: string]: unknown;
}
interface OpenCodeToolUseEvent {
type: "tool_use";
timestamp?: number;
sessionID?: string;
part?: {
id?: string;
callID?: string;
tool?: string;
state?: {
status?: string;
input?: unknown;
output?: string;
};
};
[key: string]: unknown;
}
interface OpenCodeToolResultEvent {
type: "tool_result";
timestamp?: number;
sessionID?: string;
part?: {
callID?: string;
state?: {
status?: string;
output?: string;
};
};
// fallback fields for older format
tool_id?: string;
status?: "success" | "error";
output?: string;
[key: string]: unknown;
}
interface OpenCodeResultEvent {
type: "result";
timestamp?: string;
status?: "success" | "error";
stats?: {
total_tokens?: number;
input_tokens?: number;
output_tokens?: number;
duration_ms?: number;
tool_calls?: number;
};
[key: string]: unknown;
}
interface OpenCodeErrorEvent {
type: "error";
timestamp?: string;
sessionID?: string;
error?: {
name?: string;
message?: string;
data?: unknown;
[key: string]: unknown;
};
[key: string]: unknown;
}
type OpenCodeEvent =
| OpenCodeInitEvent
| OpenCodeMessageEvent
| OpenCodeTextEvent
| OpenCodeStepStartEvent
| OpenCodeStepFinishEvent
| OpenCodeToolUseEvent
| OpenCodeToolResultEvent
| OpenCodeResultEvent
| OpenCodeErrorEvent;
let finalOutput = "";
let accumulatedTokens: { input: number; output: number } = { input: 0, output: 0 };
let tokensLogged = false;
const toolCallTimings = new Map<string, number>();
let currentStepId: string | null = null;
let currentStepType: string | null = null;
let stepHistory: Array<{ stepId: string; stepType: string; toolCalls: string[] }> = [];
const messageHandlers = {
init: (event: OpenCodeInitEvent) => {
// initialization event - reset state
log.info(
`🔵 OpenCode init: session_id=${event.session_id || "unknown"}, model=${event.model || "unknown"}`
);
log.info(`🔵 OpenCode init event (full): ${JSON.stringify(event)}`);
finalOutput = "";
accumulatedTokens = { input: 0, output: 0 };
tokensLogged = false;
},
message: (event: OpenCodeMessageEvent) => {
if (event.role === "assistant" && event.content?.trim()) {
const message = event.content.trim();
if (message) {
if (event.delta) {
// delta messages are streaming thoughts/reasoning
log.info(
`💭 OpenCode thinking: ${message.substring(0, 300)}${message.length > 300 ? "..." : ""}`
);
} else {
// complete messages
log.info(
`💬 OpenCode message (${event.role}): ${message.substring(0, 100)}${message.length > 100 ? "..." : ""}`
);
finalOutput = message;
}
}
} else if (event.role === "user") {
log.info(
`💬 OpenCode message (${event.role}): ${event.content?.substring(0, 100) || ""}${event.content && event.content.length > 100 ? "..." : ""}`
);
}
},
text: (event: OpenCodeTextEvent) => {
// log from text events only to avoid duplicates
if (event.part?.text?.trim()) {
const message = event.part.text.trim();
log.box(message, { title: "OpenCode" });
finalOutput = message;
}
},
step_start: (event: OpenCodeStepStartEvent) => {
const stepType = event.part?.type || "unknown";
const stepId = event.part?.id || "unknown";
currentStepId = stepId;
currentStepType = stepType;
stepHistory.push({ stepId, stepType, toolCalls: [] });
},
step_finish: async (event: OpenCodeStepFinishEvent) => {
const stepId = event.part?.id || "unknown";
// accumulate tokens from step_finish events (they come here, not in result)
const eventTokens = event.part?.tokens;
if (eventTokens) {
const inputTokens = eventTokens.input || 0;
const outputTokens = eventTokens.output || 0;
// accumulate tokens (don't log yet - wait for result event)
accumulatedTokens.input += inputTokens;
accumulatedTokens.output += outputTokens;
}
// clear current step
if (currentStepId === stepId) {
currentStepId = null;
currentStepType = null;
}
},
tool_use: (event: OpenCodeToolUseEvent) => {
const toolName = event.part?.tool;
const toolId = event.part?.callID;
const parameters = event.part?.state?.input;
const status = event.part?.state?.status;
const output = event.part?.state?.output;
// debug log all tool_use events to diagnose missing bash/MCP tool calls
if (!toolName || !toolId) {
log.debug(`» tool_use event missing toolName or toolId: ${JSON.stringify(event)}`);
}
if (toolName && toolId) {
// track tool call in current step
if (stepHistory.length > 0) {
stepHistory[stepHistory.length - 1].toolCalls.push(toolName);
}
log.toolCall({
toolName,
input: parameters || {},
});
// if tool already completed (status in same event), log output
if (status === "completed" && output) {
log.debug(` output: ${output}`);
}
}
},
tool_result: (event: OpenCodeToolResultEvent) => {
// handle both new part structure and legacy flat structure
const toolId = event.part?.callID || event.tool_id;
const status = event.part?.state?.status || event.status || "unknown";
const output = event.part?.state?.output || event.output;
if (toolId) {
const toolStartTime = toolCallTimings.get(toolId);
if (toolStartTime) {
const toolDuration = Date.now() - toolStartTime;
toolCallTimings.delete(toolId);
const stepContext = currentStepId ? ` (step=${currentStepType || "unknown"})` : "";
log.info(
`🔧 OpenCode tool_result${stepContext}: id=${toolId}, status=${status}, duration=${toolDuration}ms`
);
if (output) {
log.debug(` output: ${typeof output === "string" ? output : JSON.stringify(output)}`);
}
if (toolDuration > 5000) {
log.warning(
`⚠️ Tool call took ${(toolDuration / 1000).toFixed(1)}s - this may indicate network latency or slow processing`
);
}
}
}
if (status === "error") {
const errorMsg = typeof output === "string" ? output : JSON.stringify(output);
log.warning(`❌ Tool call failed: ${errorMsg}`);
}
},
result: async (event: OpenCodeResultEvent) => {
const status = event.status || "unknown";
const duration = event.stats?.duration_ms || 0;
const toolCalls = event.stats?.tool_calls || 0;
log.info(
`🏁 OpenCode result: status=${status}, duration=${duration}ms, tool_calls=${toolCalls}`
);
if (event.status === "error") {
log.error(`❌ OpenCode CLI failed: ${JSON.stringify(event)}`);
} else {
// log tokens once at the end (use stats from result if available, otherwise use accumulated from step_finish)
const inputTokens = event.stats?.input_tokens || accumulatedTokens.input || 0;
const outputTokens = event.stats?.output_tokens || accumulatedTokens.output || 0;
const totalTokens = event.stats?.total_tokens || inputTokens + outputTokens;
log.info(
`📊 OpenCode final stats: input=${inputTokens}, output=${outputTokens}, total=${totalTokens}, tool_calls=${toolCalls}, duration=${duration}ms`
);
if ((inputTokens > 0 || outputTokens > 0) && !tokensLogged) {
await log.summaryTable([
[
{ data: "Input Tokens", header: true },
{ data: "Output Tokens", header: true },
{ data: "Total Tokens", header: true },
],
[String(inputTokens), String(outputTokens), String(totalTokens)],
]);
tokensLogged = true;
}
}
},
};