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Codewalkers/coverage/src/preview/manager.ts.html
Lukas May 34578d39c6 refactor: Restructure monorepo to apps/server/ and apps/web/ layout
Move src/ → apps/server/ and packages/web/ → apps/web/ to adopt
standard monorepo conventions (apps/ for runnable apps, packages/
for reusable libraries). Update all config files, shared package
imports, test fixtures, and documentation to reflect new paths.

Key fixes:
- Update workspace config to ["apps/*", "packages/*"]
- Update tsconfig.json rootDir/include for apps/server/
- Add apps/web/** to vitest exclude list
- Update drizzle.config.ts schema path
- Fix ensure-schema.ts migration path detection (3 levels up in dev,
  2 levels up in dist)
- Fix tests/integration/cli-server.test.ts import paths
- Update packages/shared imports to apps/server/ paths
- Update all docs/ files with new paths
2026-03-03 11:22:53 +01:00

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<span class="cline-any cline-neutral">&nbsp;</span></td><td class="text"><pre class="prettyprint lang-js">/**
* Preview Manager
*
* Orchestrates preview deployment lifecycle: start, stop, list, status.
* Uses Docker as the source of truth — no database persistence.
*/
&nbsp;
import { join } from 'node:path';
import { mkdir, writeFile, rm } from 'node:fs/promises';
import { nanoid } from 'nanoid';
import type { ProjectRepository } from '../db/repositories/project-repository.js';
import type { EventBus } from '../events/types.js';
import type {
PreviewStatus,
StartPreviewOptions,
} from './types.js';
import { COMPOSE_PROJECT_PREFIX, PREVIEW_LABELS } from './types.js';
import { discoverConfig } from './config-reader.js';
import { generateComposeFile, generateCaddyfile, generateLabels } from './compose-generator.js';
import {
isDockerAvailable,
composeUp,
composeDown,
composePs,
listPreviewProjects,
getContainerLabels,
} from './docker-client.js';
import { waitForHealthy } from './health-checker.js';
import { allocatePort } from './port-allocator.js';
import { getProjectCloneDir } from '../git/project-clones.js';
import { createModuleLogger } from '../logger/index.js';
import type {
PreviewBuildingEvent,
PreviewReadyEvent,
PreviewStoppedEvent,
PreviewFailedEvent,
} from '../events/types.js';
&nbsp;
const log = createModuleLogger('preview');
&nbsp;
/** Directory for preview deployment artifacts (relative to workspace root) */
const PREVIEWS_DIR = '.cw-previews';
&nbsp;
export class PreviewManager {
private readonly projectRepository: ProjectRepository;
private readonly eventBus: EventBus;
private readonly workspaceRoot: string;
&nbsp;
constructor(
projectRepository: ProjectRepository,
eventBus: EventBus,
workspaceRoot: string,
) {
this.projectRepository = projectRepository;
this.eventBus = eventBus;
this.workspaceRoot = workspaceRoot;
}
&nbsp;
/**
* Start a preview deployment.
*
* 1. Check Docker availability
* 2. Resolve project clone path
* 3. Discover config from project at target branch
* 4. Allocate port, generate ID
* 5. Generate compose + Caddyfile, write to .cw-previews/&lt;id&gt;/
* 6. Run composeUp, wait for healthy
* 7. Emit events and return status
*/
async start(options: StartPreviewOptions): Promise&lt;PreviewStatus&gt; {
// 1. Check Docker
if (!(await isDockerAvailable())) {
throw new Error(
'Docker is not available. Please ensure Docker is installed and running.',
);
}
&nbsp;
// 2. Resolve project
const project = await this.projectRepository.findById(options.projectId);
if (!project) {
throw new Error(`Project '${options.projectId}' not found`);
}
&nbsp;
const clonePath = join(
this.workspaceRoot,
getProjectCloneDir(project.name, project.id),
);
&nbsp;
// 3. Discover config
const config = await discoverConfig(clonePath);
&nbsp;
// 4. Allocate port and generate ID
const port = await allocatePort();
const id = nanoid(10);
const projectName = `${COMPOSE_PROJECT_PREFIX}${id}`;
&nbsp;
// 5. Generate compose artifacts
const labels = generateLabels({
initiativeId: options.initiativeId,
phaseId: options.phaseId,
projectId: options.projectId,
branch: options.branch,
port,
previewId: id,
});
&nbsp;
const composeYaml = generateComposeFile(config, {
projectPath: clonePath,
port,
deploymentId: id,
labels,
});
const caddyfile = generateCaddyfile(config);
&nbsp;
// Write artifacts
const deployDir = join(this.workspaceRoot, PREVIEWS_DIR, id);
await mkdir(deployDir, { recursive: true });
&nbsp;
const composePath = join(deployDir, 'docker-compose.yml');
await writeFile(composePath, composeYaml, 'utf-8');
await writeFile(join(deployDir, 'Caddyfile'), caddyfile, 'utf-8');
&nbsp;
log.info({ id, projectName, port, composePath }, 'preview deployment prepared');
&nbsp;
// 6. Emit building event
this.eventBus.emit&lt;PreviewBuildingEvent&gt;({
type: 'preview:building',
timestamp: new Date(),
payload: { previewId: id, initiativeId: options.initiativeId, branch: options.branch, port },
});
&nbsp;
// 7. Build and start
try {
await composeUp(composePath, projectName);
} catch (error) {
log.error({ id, err: error }, 'compose up failed');
&nbsp;
this.eventBus.emit&lt;PreviewFailedEvent&gt;({
type: 'preview:failed',
timestamp: new Date(),
payload: {
previewId: id,
initiativeId: options.initiativeId,
error: (error as Error).message,
},
});
&nbsp;
// Clean up
await composeDown(projectName).catch(<span class="fstat-no" title="function not covered" >() =&gt; {</span>});
await rm(deployDir, { recursive: true, force: true }).catch(<span class="fstat-no" title="function not covered" >() =&gt; {</span>});
&nbsp;
throw new Error(`Preview build failed: ${(error as Error).message}`);
}
&nbsp;
// 8. Health check
const healthResults = await waitForHealthy(port, config);
const allHealthy = healthResults.every((r) =&gt; r.healthy);
&nbsp;
if (!allHealthy &amp;&amp; healthResults.length &gt; 0) {
const failedServices = healthResults
.filter((r) =&gt; !r.healthy)
.map((r) =&gt; r.name);
log.warn({ id, failedServices }, 'some services failed health checks');
&nbsp;
this.eventBus.emit&lt;PreviewFailedEvent&gt;({
type: 'preview:failed',
timestamp: new Date(),
payload: {
previewId: id,
initiativeId: options.initiativeId,
error: `Health checks failed for: ${failedServices.join(', ')}`,
},
});
&nbsp;
await composeDown(projectName).catch(<span class="fstat-no" title="function not covered" >() =&gt; {</span>});
await rm(deployDir, { recursive: true, force: true }).catch(<span class="fstat-no" title="function not covered" >() =&gt; {</span>});
&nbsp;
throw new Error(
`Preview health checks failed for services: ${failedServices.join(', ')}`,
);
}
&nbsp;
// 9. Success
const url = `http://localhost:${port}`;
log.info({ id, url }, 'preview deployment ready');
&nbsp;
this.eventBus.emit&lt;PreviewReadyEvent&gt;({
type: 'preview:ready',
timestamp: new Date(),
payload: {
previewId: id,
initiativeId: options.initiativeId,
branch: options.branch,
port,
url,
},
});
&nbsp;
const services = await composePs(projectName);
&nbsp;
return {
id,
projectName,
initiativeId: options.initiativeId,
phaseId: options.phaseId,
projectId: options.projectId,
branch: options.branch,
port,
status: 'running',
services,
composePath,
};
}
&nbsp;
/**
* Stop a preview deployment and clean up artifacts.
*/
async stop(previewId: string): Promise&lt;void&gt; {
const projectName = `${COMPOSE_PROJECT_PREFIX}${previewId}`;
&nbsp;
// Get labels before stopping to emit event
const labels = await getContainerLabels(projectName);
const initiativeId = labels[PREVIEW_LABELS.initiativeId] ?? '';
&nbsp;
await composeDown(projectName);
&nbsp;
// Clean up deployment directory
const deployDir = join(this.workspaceRoot, PREVIEWS_DIR, previewId);
await rm(deployDir, { recursive: true, force: true }).catch(<span class="fstat-no" title="function not covered" >() =&gt; {</span>});
&nbsp;
log.info({ previewId, projectName }, 'preview stopped');
&nbsp;
this.eventBus.emit&lt;PreviewStoppedEvent&gt;({
type: 'preview:stopped',
timestamp: new Date(),
payload: { previewId, initiativeId },
});
}
&nbsp;
/**
* List all active preview deployments, optionally filtered by initiative.
*/
async list(initiativeId?: string): Promise&lt;PreviewStatus[]&gt; {
const projects = await listPreviewProjects();
const previews: PreviewStatus[] = [];
&nbsp;
for (const project of projects) {
const labels = await getContainerLabels(project.Name);
if (!labels[PREVIEW_LABELS.preview]) continue;
&nbsp;
const preview = this.labelsToStatus(project.Name, labels, project.ConfigFiles);
if (!preview) continue;
&nbsp;
if (initiativeId &amp;&amp; preview.initiativeId !== initiativeId) continue;
&nbsp;
// Get service statuses
preview.services = await composePs(project.Name);
previews.push(preview);
}
&nbsp;
return previews;
}
&nbsp;
/**
* Get the status of a specific preview deployment.
*/
async getStatus(previewId: string): Promise&lt;PreviewStatus | null&gt; {
const projectName = `${COMPOSE_PROJECT_PREFIX}${previewId}`;
const labels = await getContainerLabels(projectName);
&nbsp;
if (!labels[PREVIEW_LABELS.preview]) {
return null;
}
&nbsp;
const preview = this.labelsToStatus(projectName, labels, '');
<span class="missing-if-branch" title="if path not taken" >I</span>if (!preview) <span class="cstat-no" title="statement not covered" >return null;</span>
&nbsp;
preview.services = await composePs(projectName);
&nbsp;
// Determine status from service states
if (preview.services.length === 0) {
preview.status = 'stopped';
} else if (preview.services.every((s) =&gt; s.state === 'running')) {
preview.status = 'running';
} else if (preview.services.some((s) =&gt; s.state === 'exited' || s.state === 'dead')) {
preview.status = 'failed';
} else {
preview.status = 'building';
}
&nbsp;
return preview;
}
&nbsp;
/**
* Stop all preview deployments. Called on server shutdown.
*/
async stopAll(): Promise&lt;void&gt; {
const projects = await listPreviewProjects();
log.info({ count: projects.length }, 'stopping all preview deployments');
&nbsp;
await Promise.all(
projects.map(async (project) =&gt; {
const id = project.Name.replace(COMPOSE_PROJECT_PREFIX, '');
await this.stop(id).catch((err) =&gt; {
log.warn({ projectName: project.Name, err }, 'failed to stop preview');
});
}),
);
}
&nbsp;
/**
* Reconstruct PreviewStatus from Docker container labels.
*/
private labelsToStatus(
projectName: string,
labels: Record&lt;string, string&gt;,
composePath: string,
): PreviewStatus | null {
const previewId = labels[PREVIEW_LABELS.previewId] ?? projectName.replace(COMPOSE_PROJECT_PREFIX, '');
const initiativeId = labels[PREVIEW_LABELS.initiativeId];
const projectId = labels[PREVIEW_LABELS.projectId];
const branch = labels[PREVIEW_LABELS.branch];
const port = parseInt(labels[PREVIEW_LABELS.port] ?? '0', 10);
&nbsp;
if (!initiativeId || !projectId || !branch) {
return null;
}
&nbsp;
return {
id: previewId,
projectName,
initiativeId,
phaseId: labels[PREVIEW_LABELS.phaseId],
projectId,
branch,
port,
status: 'running',
services: [],
composePath,
};
}
}
&nbsp;</pre></td></tr></table></pre>
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