feat(KB-616): add ProjectRuntime abstraction for task execution isolation

- Define ProjectRuntime interface with unified task execution contract\n- Implement IPC protocol for host-worker communication (messages, streaming, heartbeats)\n- Add InProcessRuntime for synchronous in-process task execution\n- Add ChildProcessRuntime with isolated worker processes for sandboxed execution\n- Implement ProjectManager to coordinate runtime selection and task lifecycle\n- Update engine exports to expose runtime APIs\n- Add comprehensive tests for all runtime implementations and IPC protocol
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gsxdsm
2026-03-31 20:12:28 -07:00
parent adb4b3e196
commit 52a74036d5
15 changed files with 3454 additions and 0 deletions

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import { EventEmitter } from "node:events";
import type { Task, CentralCore, RegisteredProject } from "@fusion/core";
import { InProcessRuntime } from "./runtimes/in-process-runtime.js";
import { ChildProcessRuntime } from "./runtimes/child-process-runtime.js";
import { AgentSemaphore } from "./concurrency.js";
import type {
ProjectRuntime,
ProjectRuntimeConfig,
RuntimeStatus,
GlobalMetrics,
} from "./project-runtime.js";
import { projectManagerLog } from "./logger.js";
/**
* Events emitted by ProjectManager with project attribution.
*/
export interface ProjectManagerEvents {
/** Emitted when a task is created in any project */
"task:created": [data: { projectId: string; projectName: string; task: Task }];
/** Emitted when a task is moved in any project */
"task:moved": [
data: {
projectId: string;
projectName: string;
task: Task;
from: string;
to: string;
}
];
/** Emitted when a task is updated in any project */
"task:updated": [data: { projectId: string; projectName: string; task: Task }];
/** Emitted when an error occurs in any project */
"error": [data: { projectId: string; projectName: string; error: Error }];
/** Emitted when project health status changes */
"health:changed": [
data: {
projectId: string;
projectName: string;
status: RuntimeStatus;
previous: RuntimeStatus;
}
];
/** Emitted when a runtime is added */
"runtime:added": [data: { projectId: string; projectName: string }];
/** Emitted when a runtime is removed */
"runtime:removed": [data: { projectId: string; projectName: string }];
}
/**
* ProjectManager orchestrates all project runtimes and enforces global
* concurrency limits from CentralCore.
*
* This is the main entry point for multi-project support in the engine.
* It manages multiple ProjectRuntime instances (one per project) and:
* - Creates appropriate runtime type based on isolation mode
* - Forwards runtime events with project attribution
* - Enforces global concurrency limits via CentralCore
* - Updates project health in CentralCore
* - Logs activity to CentralCore's unified feed
*
* **Project Registration Assumption:**
* ProjectManager assumes projects are already registered in CentralCore.
* Call `centralCore.registerProject()` before `addProject()`.
*
* @example
* ```typescript
* const central = new CentralCore();
* await central.init();
*
* const manager = new ProjectManager(central);
*
* // Register project in CentralCore first
* const project = await central.registerProject({
* name: "My Project",
* path: "/path/to/project"
* });
*
* // Then add runtime
* const runtime = await manager.addProject({
* projectId: project.id,
* workingDirectory: project.path,
* isolationMode: "in-process",
* maxConcurrent: 2,
* maxWorktrees: 4,
* });
*
* // Listen to all project events
* manager.on("task:created", ({ projectId, projectName, task }) => {
* console.log(`${projectName}: Task ${task.id} created`);
* });
* ```
*/
export class ProjectManager extends EventEmitter<ProjectManagerEvents> {
private runtimes = new Map<string, ProjectRuntime>();
private projectNames = new Map<string, string>();
private globalSemaphore: AgentSemaphore;
/**
* @param centralCore - CentralCore reference for global coordination
*/
constructor(private centralCore: CentralCore) {
super();
this.setMaxListeners(100);
// Initialize global semaphore with limit from CentralCore
this.globalSemaphore = new AgentSemaphore(() => {
// This will be updated dynamically from CentralCore
return 4; // Default, will refresh
});
// Refresh the global limit periodically
this.refreshGlobalLimit();
setInterval(() => this.refreshGlobalLimit(), 30000); // Refresh every 30s
projectManagerLog.log("ProjectManager initialized");
}
/**
* Refresh the global concurrency limit from CentralCore.
*/
private async refreshGlobalLimit(): Promise<void> {
try {
const state = await this.centralCore.getGlobalConcurrencyState();
// Update semaphore limit dynamically
// Note: AgentSemaphore reads limit via getter, so we update the source
this.globalSemaphore = new AgentSemaphore(() => state.globalMaxConcurrent);
} catch (error) {
projectManagerLog.warn("Failed to refresh global concurrency limit:", error);
}
}
/**
* Add a project runtime and start it.
*
* **Prerequisite:** Project must already be registered in CentralCore.
*
* @param config - Runtime configuration (must match a registered project)
* @returns The created and started ProjectRuntime
* @throws Error if project not found in CentralCore or runtime already exists
*/
async addProject(config: ProjectRuntimeConfig): Promise<ProjectRuntime> {
// Validate project exists in CentralCore
const project = await this.centralCore.getProject(config.projectId);
if (!project) {
throw new Error(
`Project ${config.projectId} not found in CentralCore. ` +
"Register the project first with centralCore.registerProject()."
);
}
// Check if runtime already exists
if (this.runtimes.has(config.projectId)) {
throw new Error(`Runtime already exists for project ${config.projectId}`);
}
projectManagerLog.log(`Adding project runtime for ${config.projectId} (${project.name})`);
// Store project name for event attribution
this.projectNames.set(config.projectId, project.name);
// Create appropriate runtime based on isolation mode
let runtime: ProjectRuntime;
if (config.isolationMode === "child-process") {
runtime = new ChildProcessRuntime(config, this.centralCore);
} else {
// Default to in-process
runtime = new InProcessRuntime(config, this.centralCore);
}
// Set up event forwarding with project attribution
this.setupEventForwarding(runtime, config.projectId, project.name);
// Start the runtime
await runtime.start();
// Update project health to active
await this.centralCore.updateProjectHealth(config.projectId, {
status: "active",
activeTaskCount: 0,
inFlightAgentCount: 0,
totalTasksCompleted: 0,
totalTasksFailed: 0,
updatedAt: new Date().toISOString(),
});
// Store runtime
this.runtimes.set(config.projectId, runtime);
// Log to activity feed
await this.centralCore.logActivity({
type: "task:created", // Using task:created as a generic activity type
projectId: config.projectId,
projectName: project.name,
timestamp: new Date().toISOString(),
details: `Project runtime started for ${project.name}`,
});
this.emit("runtime:added", { projectId: config.projectId, projectName: project.name });
projectManagerLog.log(`Project runtime added for ${config.projectId}`);
return runtime;
}
/**
* Remove a project runtime and stop it.
*
* @param id - Project ID to remove
* @throws Error if runtime not found
*/
async removeProject(id: string): Promise<void> {
const runtime = this.runtimes.get(id);
if (!runtime) {
throw new Error(`Runtime not found for project ${id}`);
}
const projectName = this.projectNames.get(id) ?? id;
projectManagerLog.log(`Removing project runtime for ${id}`);
// Stop the runtime
await runtime.stop();
// Remove from maps
this.runtimes.delete(id);
this.projectNames.delete(id);
// Update project health to paused
await this.centralCore.updateProjectHealth(id, {
status: "paused",
activeTaskCount: 0,
inFlightAgentCount: 0,
updatedAt: new Date().toISOString(),
});
// Log to activity feed
await this.centralCore.logActivity({
type: "task:created",
projectId: id,
projectName: projectName,
timestamp: new Date().toISOString(),
details: `Project runtime stopped for ${projectName}`,
});
this.emit("runtime:removed", { projectId: id, projectName });
projectManagerLog.log(`Project runtime removed for ${id}`);
}
/**
* Get a runtime by project ID.
*/
getRuntime(id: string): ProjectRuntime | undefined {
return this.runtimes.get(id);
}
/**
* List all managed runtimes.
*/
listRuntimes(): ProjectRuntime[] {
return Array.from(this.runtimes.values());
}
/**
* Get all project IDs.
*/
getProjectIds(): string[] {
return Array.from(this.runtimes.keys());
}
/**
* Get global metrics aggregated across all runtimes.
*/
async getGlobalMetrics(): Promise<GlobalMetrics> {
const statusCounts: Record<RuntimeStatus, number> = {
active: 0,
paused: 0,
errored: 0,
stopped: 0,
starting: 0,
stopping: 0,
};
let totalInFlight = 0;
let totalActiveAgents = 0;
for (const [id, runtime] of this.runtimes) {
const status = runtime.getStatus();
statusCounts[status]++;
try {
const metrics = runtime.getMetrics();
totalInFlight += metrics.inFlightTasks;
totalActiveAgents += metrics.activeAgents;
// Update health in CentralCore
const project = await this.centralCore.getProject(id);
if (project) {
await this.centralCore.updateProjectHealth(id, {
status: status as "active" | "paused" | "errored" | "initializing",
activeTaskCount: metrics.inFlightTasks,
inFlightAgentCount: metrics.activeAgents,
lastActivityAt: metrics.lastActivityAt,
updatedAt: new Date().toISOString(),
});
}
} catch (error) {
projectManagerLog.warn(`Failed to get metrics for ${id}:`, error);
}
}
return {
totalInFlightTasks: totalInFlight,
totalActiveAgents: totalActiveAgents,
runtimeCountByStatus: statusCounts,
totalRuntimes: this.runtimes.size,
};
}
/**
* Set up event forwarding from runtime to ProjectManager listeners.
*/
private setupEventForwarding(
runtime: ProjectRuntime,
projectId: string,
projectName: string
): void {
// Forward task:created
runtime.on("task:created", (task: Task) => {
this.emit("task:created", { projectId, projectName, task });
this.logActivity("task:created", projectId, projectName, `Task ${task.id} created`, task.id, task.title);
});
// Forward task:moved
runtime.on("task:moved", (data: { task: Task; from: string; to: string }) => {
this.emit("task:moved", { projectId, projectName, task: data.task, from: data.from, to: data.to });
this.logActivity(
"task:moved",
projectId,
projectName,
`Task ${data.task.id} moved: ${data.from}${data.to}`,
data.task.id,
data.task.title,
{ from: data.from, to: data.to }
);
});
// Forward task:updated
runtime.on("task:updated", (task: Task) => {
this.emit("task:updated", { projectId, projectName, task });
});
// Forward errors
runtime.on("error", (error: Error) => {
this.emit("error", { projectId, projectName, error });
this.logActivity(
"task:failed",
projectId,
projectName,
`Error in ${projectName}: ${error.message}`
);
});
// Forward health changes
runtime.on("health-changed", (data: { status: RuntimeStatus; previous: RuntimeStatus }) => {
this.emit("health:changed", { projectId, projectName, status: data.status, previous: data.previous });
// Update health in CentralCore
this.centralCore.updateProjectHealth(projectId, {
status: data.status as "active" | "paused" | "errored" | "initializing",
updatedAt: new Date().toISOString(),
}).catch((err: unknown) => {
projectManagerLog.warn(`Failed to update health for ${projectId}:`, err);
});
});
}
/**
* Log activity to CentralCore's unified feed.
*/
private async logActivity(
type: "task:created" | "task:moved" | "task:failed",
projectId: string,
projectName: string,
details: string,
taskId?: string,
taskTitle?: string,
metadata?: Record<string, unknown>
): Promise<void> {
try {
await this.centralCore.logActivity({
type,
projectId,
projectName,
timestamp: new Date().toISOString(),
details,
taskId,
taskTitle,
metadata,
});
} catch (error) {
// Best-effort logging
projectManagerLog.warn("Failed to log activity:", error);
}
}
/**
* Acquire a global concurrency slot.
* Call this before starting task execution.
*/
async acquireGlobalSlot(projectId: string): Promise<boolean> {
try {
return await this.centralCore.acquireGlobalSlot(projectId);
} catch (error) {
projectManagerLog.error(`Failed to acquire global slot for ${projectId}:`, error);
return false;
}
}
/**
* Release a global concurrency slot.
* Call this after task execution completes.
*/
async releaseGlobalSlot(projectId: string): Promise<void> {
try {
await this.centralCore.releaseGlobalSlot(projectId);
} catch (error) {
projectManagerLog.error(`Failed to release global slot for ${projectId}:`, error);
}
}
/**
* Stop all runtimes and clean up.
*/
async stopAll(): Promise<void> {
projectManagerLog.log("Stopping all project runtimes...");
const stopPromises = Array.from(this.runtimes.keys()).map((id) =>
this.removeProject(id).catch((error) => {
projectManagerLog.error(`Failed to stop runtime ${id}:`, error);
})
);
await Promise.all(stopPromises);
projectManagerLog.log("All project runtimes stopped");
this.removeAllListeners();
}
}