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// Delegates execution flow to ExecutionManager, manages state transitions and process control
import { ProcessController, type IProcessController } from "./process-controller";
import { mkdir } from "node:fs/promises";
import { existsSync } from "node:fs";
import { join } from "node:path";
import { Logger } from "@shared/logger";
import { getFastTmpBaseDir } from "@shared/utils/temp-paths";
import { ArduinoOutputParser as StderrParser } from "./arduino-output-parser";
import { RegistryManager } from "./registry-manager";
import { SimulationTimeoutManager } from "./simulation-timeout-manager";
import { SketchFileBuilder } from "./sketch-file-builder";
import { LocalCompiler } from "./local-compiler";
import type { RunSketchOptions } from "./run-sketch-types";
import { ProcessExecutor } from "./process-executor";
// Manager delegation imports
import { DockerManager } from "./sandbox/docker-manager";
import { StreamHandler } from "./sandbox/stream-handler";
import { FilesystemHelper } from "./sandbox/filesystem-helper";
import { ExecutionManager, type ExecutionState, SimulationState, SANDBOX_CONFIG } from "./sandbox/execution-manager";
export class SandboxRunner {
private static missingDockerSocketLogEmitted = false;
private readonly logger = new Logger("SandboxRunner");
private readonly tempDir: string;
private readonly processController: IProcessController;
private readonly registryManager: RegistryManager;
private readonly timeoutManager: SimulationTimeoutManager;
private readonly fileBuilder: SketchFileBuilder;
private readonly localCompiler: LocalCompiler;
private readonly dockerManager: DockerManager;
private readonly streamHandler: StreamHandler;
private readonly filesystemHelper: FilesystemHelper;
private readonly executionManager: ExecutionManager;
private readonly executionState: ExecutionState;
private readonly processExecutor: ProcessExecutor;
private dockerAvailable = false;
private dockerImageBuilt = false;
private dockerChecked = false;
private tempDirCreated = false;
private get state(): SimulationState { return this.executionState?.state ?? SimulationState.STOPPED; }
private set state(v: SimulationState | string) { this.executionState.state = v as SimulationState; }
constructor(options?: { tempDir?: string; processController?: IProcessController }) {
this.processController = options?.processController ?? new ProcessController();
this.tempDir = options?.tempDir ?? join(getFastTmpBaseDir(), "unosim-temp");
this.timeoutManager = new SimulationTimeoutManager();
this.fileBuilder = new SketchFileBuilder(this.tempDir);
this.localCompiler = new LocalCompiler();
this.processExecutor = new ProcessExecutor();
const stderrParser = new StderrParser();
this.registryManager = new RegistryManager({
onUpdate: (registry, baudrate, reason) => {
if (this.executionState?.ioRegistryCallback) {
this.executionState.ioRegistryCallback(registry, baudrate, reason);
}
this.executionManager.flushMessageQueue(this.executionState);
},
onTelemetry: (metrics) => {
if (this.executionState?.telemetryCallback) {
this.executionState.telemetryCallback(metrics);
}
},
enableTelemetry: true,
});
// Initialize managers with dependencies
this.dockerManager = new DockerManager(
this.processController,
stderrParser,
this.timeoutManager,
(parsed, callbacks) => {
// Delegate parsed line to stream handler
Eif (this.executionState) {
const streamState = {
pinStateBatcher: this.executionState.pinStateBatcher,
serialOutputBatcher: this.executionState.serialOutputBatcher,
backpressurePaused: this.executionState.backpressurePaused,
isPaused: this.executionState.state === SimulationState.PAUSED,
baudrate: this.executionState.baudrate,
registryManager: this.registryManager,
};
this.streamHandler.handleParsedLine(parsed, streamState, callbacks);
this.executionState.backpressurePaused = streamState.backpressurePaused;
}
},
);
this.streamHandler = new StreamHandler(this.processController);
this.filesystemHelper = new FilesystemHelper(this.fileBuilder, this.localCompiler);
// Initialize execution manager with dependencies
this.executionManager = new ExecutionManager(
this.registryManager,
this.timeoutManager,
this.fileBuilder,
this.localCompiler,
this.dockerManager,
this.streamHandler,
this.filesystemHelper,
);
// Initialize execution state
this.executionState = {
outputBuffer: "",
outputBufferIndex: 0,
isSendingOutput: false,
totalOutputBytes: 0,
messageQueue: [],
pauseStartTime: null,
totalPausedTime: 0,
isCompiling: false,
currentSketchDir: null,
currentRegistryFile: null,
processStartTime: null,
onOutputCallback: null,
pinStateCallback: null,
errorCallback: null,
telemetryCallback: null,
ioRegistryCallback: undefined,
pinStateBatcher: null,
serialOutputBatcher: null,
backpressurePaused: false,
baudrate: 9600,
stderrFallbackBuffer: "",
flushTimer: null,
state: SimulationState.STOPPED,
processKilled: false,
pendingCleanup: false,
processController: this.processController,
};
// Start docker check eagerly so getSandboxStatus() has cached results (S7059: moved to private method)
this._scheduleEagerDockerCheck();
}
/** Schedule docker availability check immediately after construction. (S7059: move async-op out of constructor) */
private _scheduleEagerDockerCheck(): void {
this.ensureDockerChecked().catch(() => {
// Docker check failed, but we already have defaults set
// (dockerAvailable=false, dockerImageBuilt=false)
});
}
get isRunning(): boolean {
return (
this.state === SimulationState.STARTING ||
this.state === SimulationState.RUNNING ||
this.state === SimulationState.PAUSED
);
}
get isPaused(): boolean {
return this.state === SimulationState.PAUSED;
}
get simulationState(): SimulationState {
return this.state;
}
private get pauseStartTime(): number | null { return this.executionState.pauseStartTime; }
async runSketch(options: RunSketchOptions): Promise<void> {
await this.ensureDockerChecked();
await this.ensureTempDir();
this.executionState.dockerAvailable = this.dockerAvailable;
this.executionState.dockerImageBuilt = this.dockerImageBuilt;
await this.executionManager.runSketch(options, this.executionState);
}
private async ensureDockerChecked(): Promise<void> {
if (this.dockerChecked) return;
Iif (process.env.FORCE_DOCKER === "1") {
this.dockerAvailable = true; this.dockerImageBuilt = true; this.dockerChecked = true; return;
}
// Always use async path; ProcessExecutor handles test mocking internally
try {
await this.checkDockerAsync();
} catch {
this.dockerAvailable = false;
this.dockerImageBuilt = false;
} finally {
this.dockerChecked = true;
}
}
private async checkDockerAsync(): Promise<void> {
const dockerSocketPath = this.getDockerSocketPath();
if (dockerSocketPath && !existsSync(dockerSocketPath)) {
this.dockerAvailable = false;
this.dockerImageBuilt = false;
this.logMissingDockerSocketOnce(dockerSocketPath);
return;
}
// Use ProcessExecutor for all Docker checks
// docker --version
const versionResult = await this.processExecutor.execute("docker", ["--version"], {
timeout: 2000,
stdio: "pipe",
});
if (versionResult.error || versionResult.code !== 0) {
this.dockerAvailable = false;
this.dockerImageBuilt = false;
return;
}
const versionOutput = versionResult.stdout || "";
Iif (!versionOutput.includes("Docker")) {
this.dockerAvailable = false;
this.dockerImageBuilt = false;
return;
}
// docker info
const infoResult = await this.processExecutor.execute("docker", ["info"], {
timeout: 2000,
stdio: "pipe",
});
if (infoResult.error || infoResult.code !== 0) {
this.dockerAvailable = false;
this.dockerImageBuilt = false;
return;
}
this.dockerAvailable = true;
// docker image inspect <image>
const imageName = SANDBOX_CONFIG.dockerImage;
const inspectResult = await this.processExecutor.execute("docker", ["image", "inspect", imageName], {
timeout: 2000,
stdio: "pipe",
});
this.dockerImageBuilt = inspectResult.code === 0;
}
private getDockerSocketPath(): string | null {
const dockerHost = process.env.DOCKER_HOST?.trim();
if (!dockerHost) {
return "/var/run/docker.sock";
}
Iif (!dockerHost.startsWith("unix://")) {
return null;
}
const socketPath = dockerHost.slice("unix://".length).trim();
return socketPath || "/var/run/docker.sock";
}
private logMissingDockerSocketOnce(socketPath: string): void {
if (SandboxRunner.missingDockerSocketLogEmitted) {
return;
}
SandboxRunner.missingDockerSocketLogEmitted = true;
this.logger.info(
`Docker socket not available at ${socketPath}; sandbox mode disabled, using local-limited execution`,
);
}
private async ensureTempDir(): Promise<void> {
if (this.tempDirCreated) return;
this.tempDirCreated = true;
try { await mkdir(this.tempDir, { recursive: true }); } catch { /* ignore */ }
}
private async cleanupDockerContainer(containerName?: string): Promise<void> {
if (!containerName) return;
try {
const result = await this.processExecutor.execute("docker", ["rm", "-f", containerName], {
timeout: 5000,
stdio: "pipe",
});
this.logger.info(`Docker cleanup for ${containerName} finished (code ${result.code})`);
} catch (error) {
this.logger.debug(`Docker cleanup for ${containerName} failed: ${error}`);
}
}
pause(): boolean {
const s = this.executionState;
Eif (this.state !== SimulationState.RUNNING || !this.processController.hasProcess()) return false;
this.state = SimulationState.PAUSED;
this.timeoutManager.pause();
s.pinStateBatcher?.pause();
s.serialOutputBatcher?.pause();
this.registryManager.pauseTelemetry();
Iif (!s.processKilled) this.processController.writeStdin("[[PAUSE_TIME]]\n");
s.pauseStartTime = Date.now();
this.registryManager.markPauseTime(s.pauseStartTime);
this.processController.kill("SIGSTOP");
this.logger.info("Simulation paused (SIGSTOP)");
return true;
}
resume(): boolean {
const s = this.executionState;
Eif (this.state !== SimulationState.PAUSED || !this.processController.hasProcess()) return false;
this.processController.kill("SIGCONT");
const pauseDuration = Date.now() - (this.pauseStartTime ?? Date.now());
s.totalPausedTime += pauseDuration;
Iif (!s.processKilled) this.processController.writeStdin(`[[RESUME_TIME:${pauseDuration}]]\n`);
s.pauseStartTime = null;
this.registryManager.markPauseTime(null);
this.state = SimulationState.RUNNING;
this.timeoutManager.resume();
s.pinStateBatcher?.resume();
s.serialOutputBatcher?.resume();
this.registryManager.resumeTelemetry();
this.logger.info(`Simulation resumed after ${pauseDuration}ms (SIGCONT)`);
Iif (!s.processKilled) this.processController.writeStdin("\n");
if (s.outputBuffer.length > 0 && s.onOutputCallback && !s.isSendingOutput) {
this.sendOutputWithDelay(s.onOutputCallback);
}
return true;
}
sendSerialInput(input: string): void {
const s = this.executionState;
if (this.isRunning && !this.isPaused && this.processController.hasProcess() && !s.processKilled) {
this.processController.writeStdin(input + "\n");
} else E{
this.logger.warn("Simulator is not running or is paused — serial input ignored");
}
}
setRegistryFile(filePath: string): void { this.executionState.currentRegistryFile = filePath; }
getSketchDir(): string | null { return this.executionState.currentSketchDir; }
setPinValue(pin: number, value: number): void {
const s = this.executionState;
if ((this.isRunning || this.isPaused) && this.processController.hasProcess() && !s.processKilled) {
this.processController.writeStdin(`[[SET_PIN:${pin}:${value}]]\n`);
}
}
// Send output character by character with baudrate delay
private sendOutputWithDelay(onOutput: (line: string, isComplete?: boolean) => void): void {
const s = this.executionState;
if (!this.isRunning || this.isPaused) { s.isSendingOutput = false; return; }
if (s.outputBufferIndex >= s.outputBuffer.length) { s.isSendingOutput = false; return; }
s.isSendingOutput = true;
const char = s.outputBuffer[s.outputBufferIndex++];
s.totalOutputBytes++;
if (s.totalOutputBytes > SANDBOX_CONFIG.maxOutputBytes) { void this.stop(); return; }
onOutput(char, char === "\n");
setTimeout(() => this.sendOutputWithDelay(onOutput), Math.max(1, 10_000 / s.baudrate));
}
async stop(): Promise<void> {
const s = this.executionState;
if (this.state === SimulationState.STOPPED || s.processKilled) return;
this.state = SimulationState.STOPPED;
s.processKilled = true;
s.pendingCleanup = true;
s.pauseStartTime = null;
s.totalPausedTime = 0;
s.pinStateBatcher?.stop(); s.pinStateBatcher?.destroy(); s.pinStateBatcher = null;
s.serialOutputBatcher?.stop(); s.serialOutputBatcher?.destroy(); s.serialOutputBatcher = null;
this.registryManager.pauseTelemetry();
s.onOutputCallback = null; s.errorCallback = null;
s.telemetryCallback = null; s.pinStateCallback = null; s.ioRegistryCallback = undefined;
this.registryManager.reset();
this.timeoutManager.clear();
this.localCompiler.kill();
this.processController.kill("SIGKILL");
this.processController.destroySockets();
const fsState = {
currentSketchDir: s.currentSketchDir, isCompiling: s.isCompiling,
pendingCleanup: s.pendingCleanup, cleanupRetries: new Map<string, number>(),
currentRegistryFile: s.currentRegistryFile,
};
this.filesystemHelper.markRegistryForCleanup(fsState);
this.filesystemHelper.markTempDirForCleanup(fsState);
s.currentSketchDir = fsState.currentSketchDir;
s.currentRegistryFile = fsState.currentRegistryFile;
s.pendingCleanup = fsState.pendingCleanup;
for (const dir of this.fileBuilder.getCreatedSketchDirs()) {
if (!existsSync(dir)) { this.fileBuilder.clearCreatedSketchDir(dir); continue; }
if (this.filesystemHelper.attemptCleanupDir(dir)) {
this.fileBuilder.clearCreatedSketchDir(dir);
} else E{
this.filesystemHelper.scheduleCleanupRetry(fsState, dir);
}
}
s.outputBuffer = ""; s.outputBufferIndex = 0; s.isSendingOutput = false;
const containerName = s.currentContainerName;
s.currentContainerName = undefined;
Iif (s.flushTimer) { clearTimeout(s.flushTimer); s.flushTimer = null; }
await this.cleanupDockerContainer(containerName);
}
getSandboxStatus(): { dockerAvailable: boolean; dockerImageBuilt: boolean; mode: "docker-sandbox" | "local-limited" } {
// Docker check is started in constructor, so just return cached values
return {
dockerAvailable: this.dockerAvailable,
dockerImageBuilt: this.dockerImageBuilt,
mode: this.dockerAvailable && this.dockerImageBuilt ? "docker-sandbox" : "local-limited",
};
}
}
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