code-server/channel.ts

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import * as path from "path";
import { VSBuffer } from "vs/base/common/buffer";
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import { Emitter, Event } from "vs/base/common/event";
import { IDisposable } from "vs/base/common/lifecycle";
import { Schemas } from "vs/base/common/network";
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import { OS } from "vs/base/common/platform";
import { URI, UriComponents } from "vs/base/common/uri";
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import { IServerChannel } from "vs/base/parts/ipc/common/ipc";
import { IDiagnosticInfo } from "vs/platform/diagnostics/common/diagnosticsService";
import { IEnvironmentService } from "vs/platform/environment/common/environment";
import { FileDeleteOptions, FileOverwriteOptions, FileType, IStat, IWatchOptions, FileOpenOptions } from "vs/platform/files/common/files";
import { ILogService } from "vs/platform/log/common/log";
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import { IRemoteAgentEnvironment } from "vs/platform/remote/common/remoteAgentEnvironment";
import { DiskFileSystemProvider } from "vs/workbench/services/files/node/diskFileSystemProvider";
/**
* Extend the file provider to allow unwatching.
*/
class Watcher extends DiskFileSystemProvider {
public readonly watches = new Map<number, IDisposable>();
public dispose(): void {
this.watches.forEach((w) => w.dispose());
this.watches.clear();
super.dispose();
}
public _watch(req: number, resource: URI, opts: IWatchOptions): void {
this.watches.set(req, this.watch(resource, opts));
}
public unwatch(req: number): void {
this.watches.get(req)!.dispose();
this.watches.delete(req);
}
}
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/**
* See: src/vs/platform/remote/common/remoteAgentFileSystemChannel.ts.
*/
export class FileProviderChannel implements IServerChannel {
private readonly provider: DiskFileSystemProvider;
private readonly watchers = new Map<string, Watcher>();
public constructor(private readonly logService: ILogService) {
this.provider = new DiskFileSystemProvider(this.logService);
}
public listen(_: unknown, event: string, args?: any): Event<any> {
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switch (event) {
// This is where the actual file changes are sent. The watch method just
// adds things that will fire here. That means we have to split up
// watchers based on the session otherwise sessions would get events for
// other sessions. There is also no point in having the watcher unless
// something is listening. I'm not sure there is a different way to
// dispose, anyway.
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case "filechange":
const session = args[0];
const emitter = new Emitter({
onFirstListenerAdd: () => {
const provider = new Watcher(this.logService);
this.watchers.set(session, provider);
provider.onDidChangeFile((events) => {
emitter.fire(events.map((event) => ({
...event,
resource: event.resource.with({ scheme: Schemas.vscodeRemote }),
})));
});
provider.onDidErrorOccur((event) => emitter.fire(event));
},
onLastListenerRemove: () => {
this.watchers.get(session)!.dispose();
this.watchers.delete(session);
},
});
return emitter.event;
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}
throw new Error(`Invalid listen "${event}"`);
}
public call(_: unknown, command: string, args?: any): Promise<any> {
switch (command) {
case "stat": return this.stat(args[0]);
case "open": return this.open(args[0], args[1]);
case "close": return this.close(args[0]);
case "read": return this.read(args[0], args[1], args[2]);
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case "write": return this.write(args[0], args[1], args[2], args[3], args[4]);
case "delete": return this.delete(args[0], args[1]);
case "mkdir": return this.mkdir(args[0]);
case "readdir": return this.readdir(args[0]);
case "rename": return this.rename(args[0], args[1], args[2]);
case "copy": return this.copy(args[0], args[1], args[2]);
case "watch": return this.watch(args[0], args[1], args[2], args[3]);
case "unwatch": return this.unwatch(args[0], args[1]);
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}
throw new Error(`Invalid call "${command}"`);
}
private async stat(resource: UriComponents): Promise<IStat> {
return this.provider.stat(URI.from(resource));
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}
private async open(resource: UriComponents, opts: FileOpenOptions): Promise<number> {
return this.provider.open(URI.from(resource), opts);
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}
private async close(fd: number): Promise<void> {
return this.provider.close(fd);
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}
private async read(fd: number, pos: number, length: number): Promise<[VSBuffer, number]> {
const buffer = VSBuffer.alloc(length);
const bytesRead = await this.provider.read(fd, pos, buffer.buffer, 0, length);
return [buffer, bytesRead];
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}
private write(fd: number, pos: number, buffer: VSBuffer, offset: number, length: number): Promise<number> {
return this.provider.write(fd, pos, buffer.buffer, offset, length);
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}
private async delete(resource: UriComponents, opts: FileDeleteOptions): Promise<void> {
return this.provider.delete(URI.from(resource), opts);
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}
private async mkdir(resource: UriComponents): Promise<void> {
return this.provider.mkdir(URI.from(resource));
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}
private async readdir(resource: UriComponents): Promise<[string, FileType][]> {
return this.provider.readdir(URI.from(resource));
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}
private async rename(resource: UriComponents, target: UriComponents, opts: FileOverwriteOptions): Promise<void> {
return this.provider.rename(URI.from(resource), URI.from(target), opts);
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}
private copy(resource: UriComponents, target: UriComponents, opts: FileOverwriteOptions): Promise<void> {
return this.provider.copy(URI.from(resource), URI.from(target), opts);
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}
private async watch(session: string, req: number, resource: UriComponents, opts: IWatchOptions): Promise<void> {
this.watchers.get(session)!._watch(req, URI.from(resource), opts);
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}
private async unwatch(session: string, req: number): Promise<void> {
this.watchers.get(session)!.unwatch(req);
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}
}
/**
* See: src/vs/workbench/services/remote/common/remoteAgentEnvironmentChannel.ts.
*/
export class ExtensionEnvironmentChannel implements IServerChannel {
public constructor(private readonly environment: IEnvironmentService) {}
public listen(_context: any, event: string): Event<any> {
throw new Error(`Invalid listen "${event}"`);
}
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public call(_: unknown, command: string, _args?: any): Promise<any> {
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switch (command) {
case "getEnvironmentData": return this.getEnvironmentData();
case "getDiagnosticInfo": return this.getDiagnosticInfo();
case "disableTelemetry": return this.disableTelemetry();
}
throw new Error(`Invalid call "${command}"`);
}
private async getEnvironmentData(): Promise<IRemoteAgentEnvironment> {
// TODO: this `with` stuff feels a bit jank.
// Maybe it should already come in like this instead.
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return {
pid: process.pid,
appRoot: URI.file(this.environment.appRoot).with({ scheme: Schemas.vscodeRemote }),
appSettingsHome: this.environment.appSettingsHome.with({ scheme: Schemas.vscodeRemote }),
settingsPath: this.environment.machineSettingsHome.with({ scheme: Schemas.vscodeRemote }),
logsPath: URI.file(this.environment.logsPath).with({ scheme: Schemas.vscodeRemote }),
extensionsPath: URI.file(this.environment.extensionsPath).with({ scheme: Schemas.vscodeRemote }),
extensionHostLogsPath: URI.file(path.join(this.environment.logsPath, "extension-host")).with({ scheme: Schemas.vscodeRemote }), // TODO
globalStorageHome: URI.file(this.environment.globalStorageHome).with({ scheme: Schemas.vscodeRemote }),
userHome: URI.file(this.environment.userHome).with({ scheme: Schemas.vscodeRemote }),
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extensions: [], // TODO
os: OS,
};
}
private getDiagnosticInfo(): Promise<IDiagnosticInfo> {
throw new Error("not implemented");
}
private disableTelemetry(): Promise<void> {
throw new Error("not implemented");
}
}