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// Orchestrates the complete simulation lifecycle (prepare, compile, run)
// Extracted from SandboxRunner to reduce runner complexity
import { randomUUID } from "node:crypto";
import { Logger } from "@shared/logger";
import { ProcessExecutor } from "../process-executor";
import type { IOPinRecord } from "@shared/schema";
import type { IProcessController } from "../process-controller";
import { ArduinoOutputParser as StderrParser } from "../arduino-output-parser";
import { RegistryManager } from "../registry-manager";
import { SimulationTimeoutManager } from "../simulation-timeout-manager";
import { DockerCommandBuilder } from "../docker-command-builder";
import { SketchFileBuilder } from "../sketch-file-builder";
import { LocalCompiler } from "../local-compiler";
import { PinStateBatcher, type PinStateBatch } from "../pin-state-batcher";
import { SerialOutputBatcher } from "../serial-output-batcher";
import type { RunSketchOptions } from "../run-sketch-types";
import { getCompileGatekeeper } from "../compile-gatekeeper";
import { DockerManager } from "./docker-manager";
import { StreamHandler } from "./stream-handler";
import { FilesystemHelper } from "./filesystem-helper";
export enum SimulationState {
STOPPED = "stopped",
STARTING = "starting",
RUNNING = "running",
PAUSED = "paused",
ERROR = "error",
}
export const SANDBOX_CONFIG = {
dockerImage: process.env.DOCKER_SANDBOX_IMAGE ?? "unosim-sandbox:latest",
useDocker: true,
maxMemoryMB: 256,
maxCpuPercent: 50,
maxExecutionTimeSec: 60,
maxOutputBytes: 100 * 1024 * 1024,
noNetwork: true,
readOnlyFs: true,
dropCapabilities: true,
};
// Type aliases for callbacks
// Output / error / pin state callbacks (from sandbox runner to consumers)
type OutputCallback = (line: string, isComplete?: boolean) => void;
type PinStateCallback = (pin: number, type: "mode" | "value" | "pwm", value: number) => void;
type ErrorCallback = (line: string) => void;
export interface TelemetryMetrics {
timestamp: number;
intendedPinChangesPerSecond: number;
actualPinChangesPerSecond: number;
droppedPinChangesPerSecond: number;
batchesPerSecond: number;
avgStatesPerBatch: number;
serialOutputPerSecond: number;
serialBytesPerSecond: number;
serialBytesTotal: number;
serialIntendedBytesPerSecond: number;
serialDroppedBytesPerSecond: number;
}
type TelemetryCallback = (metrics: TelemetryMetrics) => void;
type ProcessMessage =
| { type: "pinState"; data: { pin: number; stateType: "mode" | "value" | "pwm"; value: number } }
| { type: "output"; data: { line: string; isComplete?: boolean } }
| { type: "error"; data: { line: string } };
type ParsedStderrOutput = ReturnType<InstanceType<typeof StderrParser>["parseStderrLine"]>;
type DockerState = {
isCompilePhase: { value: boolean };
compileErrorBuffer: { value: string };
compileSuccessSent: { value: boolean };
totalOutputBytes: number;
processStartTime: number | null;
stderrFallbackBuffer: string;
flushTimer: NodeJS.Timeout | null;
};
interface ExecutionCallbacks {
onOutput: OutputCallback;
onError: ErrorCallback;
onPinState?: PinStateCallback;
}
type IORegistryCallback = (registry: IOPinRecord[], baudrate: number | undefined, reason?: string) => void;
// Nullable type aliases
type Nullable<T> = T | null;
export interface ExecutionState {
outputBuffer: string;
outputBufferIndex: number;
isSendingOutput: boolean;
totalOutputBytes: number;
messageQueue: ProcessMessage[];
pauseStartTime: Nullable<number>;
totalPausedTime: number;
isCompiling: boolean;
currentSketchDir: Nullable<string>;
currentRegistryFile: Nullable<string>;
processStartTime: Nullable<number>;
onOutputCallback: Nullable<OutputCallback>;
pinStateCallback: Nullable<PinStateCallback>;
errorCallback: Nullable<ErrorCallback>;
telemetryCallback: Nullable<TelemetryCallback>;
ioRegistryCallback?: IORegistryCallback;
pinStateBatcher: Nullable<PinStateBatcher>;
serialOutputBatcher: Nullable<SerialOutputBatcher>;
backpressurePaused: boolean;
baudrate: number;
stderrFallbackBuffer: string;
flushTimer: Nullable<NodeJS.Timeout>;
state: SimulationState;
processKilled: boolean;
pendingCleanup: boolean;
processController: IProcessController;
currentContainerName?: string;
dockerAvailable?: boolean;
dockerImageBuilt?: boolean;
}
export class ExecutionManager {
private readonly logger = new Logger("ExecutionManager");
private readonly stderrParser = new StderrParser();
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 processExecutor: ProcessExecutor;
constructor(
registryManager: RegistryManager,
timeoutManager: SimulationTimeoutManager,
fileBuilder: SketchFileBuilder,
localCompiler: LocalCompiler,
dockerManager: DockerManager,
streamHandler: StreamHandler,
filesystemHelper: FilesystemHelper,
) {
this.registryManager = registryManager;
this.timeoutManager = timeoutManager;
this.fileBuilder = fileBuilder;
this.localCompiler = localCompiler;
this.dockerManager = dockerManager;
this.streamHandler = streamHandler;
this.filesystemHelper = filesystemHelper;
this.processExecutor = new ProcessExecutor();
}
private static get compileGatekeeper() {
return getCompileGatekeeper();
}
/**
* Main execution entry point: prepare, compile, and run a sketch
*/
async runSketch(options: RunSketchOptions, state: ExecutionState): Promise<void> {
const opts = options;
const { code, onOutput, onError, onExit, onCompileError, onPinState, timeoutSec, onIORegistry, onTelemetry, onPinStateBatch } = opts;
// Transition to STARTING state
const canStart = this.transitionTo(state, SimulationState.STARTING);
if (!canStart) {
this.logger.warn(`runSketch ignored - invalid state: ${state.state}`);
return;
}
// Clear pending cleanup for a fresh run
state.pendingCleanup = false;
// Create and start PinStateBatcher
state.pinStateBatcher = new PinStateBatcher({
tickIntervalMs: 50,
onBatch: (batch: PinStateBatch) => {
if (state.messageQueue && this.registryManager.isWaiting()) {
for (const s of batch.states) {
state.messageQueue.push({
type: "pinState",
data: { pin: s.pin, stateType: s.stateType, value: s.value },
});
}
} else if (onPinStateBatch) {
onPinStateBatch(batch);
} else if (onPinState) {
for (const s of batch.states) {
onPinState(s.pin, s.stateType, s.value);
}
}
},
});
state.pinStateBatcher.start();
this.registryManager.setPinStateBatcher(state.pinStateBatcher);
// Bind callbacks
state.onOutputCallback = onOutput;
state.errorCallback = onError;
state.pinStateCallback = onPinState || null;
state.telemetryCallback = onTelemetry || null;
// Initialize run state
this.initializeRunState(code, onOutput, onIORegistry, timeoutSec, state);
// Create and start SerialOutputBatcher
state.serialOutputBatcher = new SerialOutputBatcher({
baudrate: state.baudrate,
tickIntervalMs: 50,
onChunk: (data: string, firstLineIncomplete?: boolean) => {
Iif (typeof onOutput !== "function") return;
Iif (state.backpressurePaused) {
setTimeout(() => {
if (
state.backpressurePaused &&
state.serialOutputBatcher &&
!state.serialOutputBatcher.isOverloaded() &&
state.state !== SimulationState.PAUSED &&
state.processController.hasProcess()
) {
this.logger.info("Backpressure relieved, sending SIGCONT");
state.processController.kill("SIGCONT");
state.backpressurePaused = false;
}
}, 0);
}
const endsWithNewline = data.endsWith("\n");
const parts = data.split("\n");
for (let i = 0; i < parts.length; i++) {
const isLastPart = i === parts.length - 1;
if (isLastPart && endsWithNewline) {
break;
}
const isComplete = !isLastPart && !(i === 0 && firstLineIncomplete);
onOutput(parts[i], isComplete);
}
},
});
state.serialOutputBatcher.start();
this.registryManager.setSerialOutputBatcher(state.serialOutputBatcher);
try {
// Prepare environment
const files = await this.prepareEnvironment(code, state);
state.processKilled = false;
Iif (state.pendingCleanup || state.processKilled || state.state === SimulationState.STOPPED) {
this.filesystemHelper.markTempDirForCleanup(this.extractFilesystemState(state));
return;
}
// Create wrapped callbacks
const wrapped = this.createWrappedCallbacks(onOutput, onError, onPinState, state);
// Setup and run simulation
await this.setupSimulationProcess(files, wrapped, opts, state);
} catch (err) {
const errorMessage = err instanceof Error ? err.message : String(err);
this.logger.error(`Kompilierfehler oder Timeout: ${errorMessage}`);
if (onCompileError) {
onCompileError(errorMessage);
}
Eif (onExit) {
onExit(-1);
}
state.processController.destroySockets();
this.filesystemHelper.markTempDirForCleanup(this.extractFilesystemState(state));
}
}
/**
* Initialize run state for a new execution
*/
private initializeRunState(
code: string,
onOutput: (line: string, isComplete?: boolean) => void,
onIORegistry?: (registry: IOPinRecord[], baudrate: number | undefined, reason?: string) => void,
timeoutSec?: number,
state?: ExecutionState,
): void {
Iif (!state) return;
const baudMatch = /Serial\s*\.\s*begin\s*\(\s*(\d+)\s*\)/.exec(code);
state.baudrate = baudMatch ? Number.parseInt(baudMatch[1]) : 9600;
const executionTimeout = timeoutSec ?? SANDBOX_CONFIG.maxExecutionTimeSec;
this.logger.info(
`🕐 runSketch called with timeoutSec=${timeoutSec}, using executionTimeout=${executionTimeout}s`,
);
this.logger.info(`Parsed baudrate: ${state.baudrate}`);
state.pauseStartTime = null;
state.totalPausedTime = 0;
this.registryManager.reset();
this.registryManager.setBaudrate(state.baudrate);
this.registryManager.enableWaitMode(5000); // Original 5s timeout
state.messageQueue = [];
state.outputBuffer = "";
state.outputBufferIndex = 0;
state.isSendingOutput = false;
state.totalOutputBytes = 0;
state.onOutputCallback = onOutput;
state.ioRegistryCallback = onIORegistry;
}
/**
* Prepare environment: write sketch files
*/
private async prepareEnvironment(
code: string,
state: ExecutionState,
): Promise<{ sketchDir: string; sketchFile: string; exeFile: string }> {
const sketchId = randomUUID();
const files = await this.fileBuilder.build(code, sketchId);
state.currentSketchDir = files.sketchDir;
return files;
}
/**
* Perform compilation (local path only; Docker handles internally)
*/
private async performCompilation(
sketchFile: string,
exeFile: string,
opts: RunSketchOptions,
state: ExecutionState,
): Promise<void> {
const WAIT_TIMEOUT_MS = 30000;
let release: () => void;
try {
release = await Promise.race([
ExecutionManager.compileGatekeeper.acquireHighPriority(),
new Promise<never>((_, reject) =>
setTimeout(() => reject(new Error("compile-gatekeeper timeout")), WAIT_TIMEOUT_MS),
),
]);
} catch (err) {
this.logger.error(`Gatekeeper wait failed: ${err instanceof Error ? err.message : String(err)}`);
this.transitionTo(state, SimulationState.ERROR);
throw err;
}
try {
Eif (state.processController && this.localCompiler) {
await this.localCompiler.compile(sketchFile, exeFile);
if (opts.onCompileSuccess) opts.onCompileSuccess();
await this.localCompiler.makeExecutable(exeFile);
}
} finally {
try {
release();
} catch {
// should never happen
}
}
}
/**
* Setup simulation process: compile and spawn
*/
private async setupSimulationProcess(
files: { sketchDir: string; sketchFile: string; exeFile: string },
callbacks: ExecutionCallbacks,
opts: RunSketchOptions,
state: ExecutionState,
): Promise<void> {
const { timeoutSec } = opts;
const executionTimeout = timeoutSec ?? SANDBOX_CONFIG.maxExecutionTimeSec;
const useDocker = !!(state.dockerAvailable && state.dockerImageBuilt);
if (useDocker) {
await this.runDocker(files, callbacks, opts, state, executionTimeout);
} else {
await this.runLocal(files, callbacks, opts, state, executionTimeout);
}
}
/**
* Run in Docker container
*/
private async runDocker(
files: { sketchDir: string; sketchFile: string; exeFile: string },
callbacks: ExecutionCallbacks,
opts: RunSketchOptions,
state: ExecutionState,
executionTimeout: number,
): Promise<void> {
const containerName = `unosim-sandbox-${randomUUID()}`;
state.currentContainerName = containerName;
const dockerArgs = DockerCommandBuilder.buildSecureRunCommand({
sketchDir: files.sketchDir,
memoryMB: SANDBOX_CONFIG.maxMemoryMB,
cpuLimit: "0.5",
pidsLimit: 50,
imageName: SANDBOX_CONFIG.dockerImage,
command: DockerCommandBuilder.buildCompileAndRunCommand(),
containerName,
arduinoCacheDir: process.env.ARDUINO_CACHE_DIR,
});
const { onCompileError, onCompileSuccess, onExit } = opts;
try {
state.processController.clearListeners();
await state.processController.spawn("docker", dockerArgs);
this.logger.info("🚀 Docker: Compile + Run in single container");
state.processStartTime = Date.now();
this.transitionTo(state, SimulationState.RUNNING);
const dockerState: DockerState = {
isCompilePhase: { value: true },
compileErrorBuffer: { value: "" },
compileSuccessSent: { value: false },
totalOutputBytes: state.totalOutputBytes,
processStartTime: state.processStartTime,
stderrFallbackBuffer: state.stderrFallbackBuffer,
flushTimer: state.flushTimer,
};
const dockerCallbacks = {
onOutput: callbacks.onOutput,
onPinState: callbacks.onPinState ?? (() => {}),
onError: callbacks.onError,
};
state.processController.onError((err) => {
this.logger.error(`Docker process error: ${err.message}`);
callbacks.onError(`Docker process failed: ${err.message}`);
});
// Single close handler: state transition + cleanup.
// Note: compile callbacks, batchers, and onExit are handled exclusively
// by dockerManager.setupDockerHandlers → handleDockerExit to avoid
// double invocation (which previously caused a double "stopped" event).
state.processController.onClose((_code) => {
this.transitionTo(state, SimulationState.STOPPED);
Iif (state.flushTimer) {
clearTimeout(state.flushTimer);
state.flushTimer = null;
}
void this.cleanupDockerContainer(state.currentContainerName);
this.filesystemHelper.markTempDirForCleanup(this.extractFilesystemState(state));
});
this.dockerManager.setupDockerHandlers(
dockerCallbacks,
dockerState,
{
flushBatchers: () => this.flushBatchers(state),
flushMessageQueue: () => this.flushMessageQueue(state),
getProcessKilled: () => state.processKilled,
executionTimeout,
},
{
onCompileError,
onCompileSuccess,
onExit,
},
);
} catch (err) {
this.logger.error(`Docker process spawn failed: ${err instanceof Error ? err.message : String(err)}`);
this.transitionTo(state, SimulationState.STOPPED);
state.processController.destroySockets();
this.filesystemHelper.markTempDirForCleanup(this.extractFilesystemState(state));
throw err;
}
}
/**
* Run locally (without Docker)
*/
private async runLocal(
files: { sketchDir: string; sketchFile: string; exeFile: string },
callbacks: ExecutionCallbacks,
opts: RunSketchOptions,
state: ExecutionState,
executionTimeout: number,
): Promise<void> {
const { onCompileError, onExit } = opts;
try {
state.isCompiling = true;
await this.performCompilation(files.sketchFile, files.exeFile, opts, state);
state.isCompiling = false;
if (state.pendingCleanup || state.processKilled || state.state === SimulationState.STOPPED) {
this.filesystemHelper.markTempDirForCleanup(this.extractFilesystemState(state));
return;
}
state.processController.clearListeners();
await state.processController.spawn(files.exeFile);
state.processStartTime = Date.now();
this.transitionTo(state, SimulationState.RUNNING);
this.setupLocalHandlers(callbacks, onExit, executionTimeout, state);
} catch (err) {
state.isCompiling = false;
if (onCompileError) onCompileError(err instanceof Error ? err.message : String(err));
Eif (onExit) onExit(-1);
this.transitionTo(state, SimulationState.STOPPED);
state.processController.destroySockets();
this.filesystemHelper.markTempDirForCleanup(this.extractFilesystemState(state));
throw err;
}
}
/**
* Setup event handlers for local process
*/
private setupLocalHandlers(
callbacks: ExecutionCallbacks,
onExit?: (code: number | null) => void,
executionTimeout?: number,
state?: ExecutionState,
): void {
Iif (!state) return;
const handleTimeout = () => {
this.handleExecutionTimeout(executionTimeout, state, callbacks);
};
this.timeoutManager.schedule(executionTimeout && executionTimeout > 0 ? executionTimeout * 1000 : null, handleTimeout);
state.processController.onStdout((data) => {
const str = data.toString();
state.totalOutputBytes += str.length;
if (state.totalOutputBytes > SANDBOX_CONFIG.maxOutputBytes) {
state.processController.kill("SIGKILL"); // Trigger stop
callbacks.onError("Output size limit exceeded");
return;
}
const lines = str.split(/\r?\n/);
lines.forEach((line) => {
if (!line) return;
const parsed = this.stderrParser.parseStderrLine(line, state.processStartTime);
this.delegateParsedLineToStreamHandler(parsed, callbacks.onPinState, callbacks.onOutput, callbacks.onError, state);
});
});
const useFallbackParser = !state.processController.supportsStderrLineStreaming();
state.stderrFallbackBuffer = "";
state.processController.onStderr((data) => {
Iif (useFallbackParser) {
this.handleStderrFallbackData(data, state, callbacks);
}
});
state.processController.onStderrLine((line) => {
Iif (line.length === 0) return;
const parsed = this.stderrParser.parseStderrLine(line, state.processStartTime);
this.delegateParsedLineToStreamHandler(parsed, callbacks.onPinState, callbacks.onOutput, callbacks.onError, state);
});
state.processController.onClose((code) => {
const wasRunning = state.state === SimulationState.RUNNING;
this.transitionTo(state, SimulationState.STOPPED);
Iif (state.flushTimer) {
clearTimeout(state.flushTimer);
state.flushTimer = null;
}
Iif (state.stderrFallbackBuffer) {
const buffered = state.stderrFallbackBuffer;
state.stderrFallbackBuffer = "";
if (buffered.trim()) {
const parsed = this.stderrParser.parseStderrLine(buffered, state.processStartTime);
this.delegateParsedLineToStreamHandler(parsed, callbacks.onPinState, callbacks.onOutput, callbacks.onError, state);
}
}
this.flushMessageQueue(state);
if (wasRunning) {
this.flushBatchers(state);
Eif (state.serialOutputBatcher) {
state.serialOutputBatcher.destroy();
state.serialOutputBatcher = null;
}
Eif (state.pinStateBatcher) {
state.pinStateBatcher.destroy();
state.pinStateBatcher = null;
}
}
if (state.ioRegistryCallback) {
const finalRegistry = this.registryManager.getRegistry();
Iif (finalRegistry.length > 0) {
state.ioRegistryCallback([...finalRegistry], state.baudrate, "process-exit");
}
}
if (!state.processKilled && onExit) onExit(code);
this.filesystemHelper.markTempDirForCleanup(this.extractFilesystemState(state));
});
}
/**
* Create wrapped callbacks for message queuing
*/
private createWrappedCallbacks(
onOutput: OutputCallback,
onError: ErrorCallback,
onPinState?: PinStateCallback,
state?: ExecutionState,
) {
return {
onOutput: (line: string, isComplete?: boolean) => {
Iif (typeof line === "string" && line.startsWith("[[SIM_TELEMETRY:") && line.endsWith("]]")) {
try {
const jsonStr = line.slice("[[SIM_TELEMETRY:".length, -2);
const metrics = JSON.parse(jsonStr);
if (state?.telemetryCallback) {
state.telemetryCallback(metrics);
}
return;
} catch (err) {
this.logger.warn(`Failed to parse telemetry marker: ${err}`);
}
}
if (state?.serialOutputBatcher) {
state.serialOutputBatcher.enqueue(line);
E} else if (onOutput && state?.processKilled === false) {
onOutput(line, isComplete);
}
},
onPinState: (pin: number, stateType: "mode" | "value" | "pwm", value: number) => {
if (state && this.registryManager.isWaiting()) {
state.messageQueue.push({
type: "pinState",
data: { pin, stateType, value },
});
} else if (onPinState) {
onPinState(pin, stateType, value);
}
},
onError: (line: string) => {
Eif (onError) {
onError(line);
}
},
};
}
/**
* Delegate parsed line to StreamHandler
*/
private delegateParsedLineToStreamHandler(
parsed: ParsedStderrOutput,
onPinState?: (pin: number, type: "mode" | "value" | "pwm", value: number) => void,
onOutput?: (line: string, isComplete?: boolean) => void,
onError?: (line: string) => void,
state?: ExecutionState,
): void {
Iif (!state) return;
const streamState = {
pinStateBatcher: state.pinStateBatcher,
serialOutputBatcher: state.serialOutputBatcher,
backpressurePaused: state.backpressurePaused,
isPaused: state.state === SimulationState.PAUSED,
baudrate: state.baudrate,
registryManager: this.registryManager,
};
const callbacks = {
onPinState,
onOutput,
onError,
};
this.streamHandler.handleParsedLine(parsed, streamState, callbacks);
state.backpressurePaused = streamState.backpressurePaused;
}
/**
* Flush message queue
*/
flushMessageQueue(state: ExecutionState): void {
Eif (state.messageQueue.length === 0) {
return;
}
this.logger.debug(`[Registry] Flushing ${state.messageQueue.length} queued messages`);
const queue = state.messageQueue;
state.messageQueue = [];
for (const msg of queue) {
if (msg.type === "pinState" && state.pinStateCallback) {
state.pinStateCallback(msg.data.pin, msg.data.stateType, msg.data.value);
} else if (msg.type === "output" && state.onOutputCallback) {
state.onOutputCallback(msg.data.line, msg.data.isComplete);
} else if (msg.type === "error" && state.errorCallback) {
state.errorCallback(msg.data.line);
}
}
}
/**
* Flush batchers
*/
private flushBatchers(state: ExecutionState): void {
Eif (state.serialOutputBatcher) {
state.serialOutputBatcher.stop();
}
Eif (state.pinStateBatcher) {
state.pinStateBatcher.stop();
}
}
/**
* Handle execution timeout by killing process and notifying output
*/
private handleExecutionTimeout(
executionTimeout: number | undefined,
state: ExecutionState,
callbacks: ExecutionCallbacks,
): void {
state.processController.kill("SIGKILL");
callbacks.onOutput(`--- Simulation timeout (${executionTimeout}s) ---`, true);
void this.cleanupDockerContainer(state.currentContainerName);
}
/**
* Ensure no container remains after Docker process exit or timeout.
*/
private async cleanupDockerContainer(containerName?: string): Promise<void> {
if (!containerName) {
return;
}
try {
await this.processExecutor.execute("docker", ["rm", "-f", containerName], {
timeout: 5000,
stdio: "pipe",
});
this.logger.info(`Docker container cleanup: ${containerName}`);
} catch (error) {
this.logger.debug(`Docker cleanup failed for ${containerName}: ${error}`);
}
}
/**
* Process buffered stderr data in fallback mode
*/
private handleStderrFallbackData(
data: Buffer,
state: ExecutionState,
callbacks: ExecutionCallbacks,
): void {
state.stderrFallbackBuffer += data.toString();
const lines = state.stderrFallbackBuffer.split(/\r?\n/);
state.stderrFallbackBuffer = lines.pop() || "";
for (const line of lines) {
if (!line) continue;
const parsed = this.stderrParser.parseStderrLine(line, state.processStartTime);
this.delegateParsedLineToStreamHandler(parsed, callbacks.onPinState, callbacks.onOutput, callbacks.onError, state);
}
}
/**
* State transition (delegated from runner)
*/
private transitionTo(state: ExecutionState, newState: SimulationState): boolean {
// Guard: no transition from ERROR
Iif (state.state === SimulationState.ERROR) {
return false;
}
// Guard: can't stop paused simulation
Iif (newState === SimulationState.STOPPED && state.state === SimulationState.PAUSED) {
return true; // Allow stop from paused
}
// Check valid transitions
const validTransitions: Record<SimulationState, SimulationState[]> = {
[SimulationState.STOPPED]: [SimulationState.STARTING],
[SimulationState.STARTING]: [SimulationState.STOPPED, SimulationState.RUNNING, SimulationState.ERROR],
[SimulationState.RUNNING]: [SimulationState.PAUSED, SimulationState.STOPPED, SimulationState.ERROR],
[SimulationState.PAUSED]: [SimulationState.RUNNING, SimulationState.STOPPED, SimulationState.ERROR],
[SimulationState.ERROR]: [],
};
if (!validTransitions[state.state].includes(newState)) {
return false;
}
state.state = newState;
return true;
}
/**
* Extract filesystem state for delegation
*/
private extractFilesystemState(state: ExecutionState) {
return {
currentSketchDir: state.currentSketchDir,
isCompiling: state.isCompiling,
pendingCleanup: state.pendingCleanup,
cleanupRetries: new Map(),
currentRegistryFile: null,
};
}
}
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