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Copy pathzmq-kernel.ts
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305 lines (287 loc) · 10.2 KB
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import * as child_process from 'child_process';
import * as path from 'path';
import * as fs from 'fs';
import { Kernel } from './kernel';
import * as vscode from 'vscode';
import { KernelspecMetadata, JupyterMessage } from './contracts';
import { JmpModuleLoadError } from '../common/errors';
const uuid = require('uuid');
export class ZMQKernel extends Kernel {
private executionCallbacks: Map<string, Function>;
constructor(kernelSpec: KernelspecMetadata, language: string, private connection: any, private connectionFile: string, public kernelProcess?: child_process.ChildProcess) {
super(kernelSpec, language);
let getKernelNotificationsRegExp: Function;
this.executionCallbacks = new Map<string, Function>();
this._connect();
if (this.kernelProcess != null) {
getKernelNotificationsRegExp = () => {
try {
const pattern = '(?!)';
const flags = 'im';
return new RegExp(pattern, flags);
} catch (_error) {
return null;
}
};
this.kernelProcess.stdout.on('data', data => {
data = data.toString();
const regexp = getKernelNotificationsRegExp();
if (regexp != null ? regexp.test(data) : null) {
return vscode.window.showInformationMessage(data);
}
});
this.kernelProcess.stderr.on('data', data => {
data = data.toString();
const regexp = getKernelNotificationsRegExp();
if (regexp !== null ? regexp.test(data) : null) {
return vscode.window.showErrorMessage(data);
}
});
} else {
vscode.window.showInformationMessage('Using an existing kernel connection');
}
}
private shellSocket: any;
private controlSocket: any;
private shellSocstdinSocketket: any;
private stdinSocket: any;
private ioSocket: any;
private jmp: any;
public _connect() {
throw new Error('Support for zmq kernel has been deprecated');
};
public interrupt(): any {
if (this.kernelProcess != null) {
return this.kernelProcess.kill('SIGINT');
} else {
return vscode.window.showWarningMessage('Cannot interrupt this kernel');
}
};
public _kill(): any {
if (this.kernelProcess != null) {
return this.kernelProcess.kill('SIGKILL');
} else {
return vscode.window.showWarningMessage('Cannot kill this kernel');
}
};
public shutdown(restart?: boolean) {
if (!this.jmp) {
return;
}
if (restart == null) {
restart = false;
}
const requestId = 'shutdown_' + uuid.v4();
const message = this._createMessage('shutdown_request', requestId);
message.content = {
restart: restart
};
return this.shellSocket.send(new this.jmp.Message(message));
};
public _execute(code: string, requestId: string, onResults: Function) {
const message = this._createMessage('execute_request', requestId);
message.content = {
code: code,
silent: false,
store_history: true,
user_expressions: {},
allow_stdin: true
};
this.executionCallbacks.set(requestId, onResults);
return this.shellSocket.send(new this.jmp.Message(message));
};
public execute(code: string, onResults: Function) {
const requestId = 'execute_' + uuid.v4();
return this._execute(code, requestId, onResults);
};
public executeWatch(code: string, onResults: Function) {
const requestId = 'watch_' + uuid.v4();
return this._execute(code, requestId, onResults);
};
public complete(code: string, onResults: Function) {
const requestId = 'complete_' + uuid.v4();
const message = this._createMessage('complete_request', requestId);
message.content = {
code: code,
text: code,
line: code,
cursor_pos: code.length
};
this.executionCallbacks.set(requestId, onResults);
return this.shellSocket.send(new this.jmp.Message(message));
};
public inspect(code: string, cursor_pos, onResults: Function) {
const requestId = 'inspect_' + uuid.v4();
const message = this._createMessage('inspect_request', requestId);
message.content = {
code: code,
cursor_pos: cursor_pos,
detail_level: 0
};
this.executionCallbacks.set(requestId, onResults);
return this.shellSocket.send(new this.jmp.Message(message));
};
public inputReply(input: string) {
const requestId = 'input_reply_' + uuid.v4();
const message = this._createMessage('input_reply', requestId);
message.content = {
value: input
};
return this.stdinSocket.send(new this.jmp.Message(message));
};
private onShellMessage(message: JupyterMessage) {
let callback: Function;
if (!this._isValidMessage(message)) {
return;
}
const msg_id = message.parent_header.msg_id;
if (msg_id != null && this.executionCallbacks.has(msg_id)) {
callback = this.executionCallbacks.get(msg_id);
}
if (!callback) {
return;
}
const status = message.content.status;
if (status === 'error') {
const msg_type = message.header.msg_type;
// http://jupyter-client.readthedocs.io/en/latest/messaging.html#request-reply
if (msg_type === 'execution_reply' || msg_type === 'execute_reply') {
this.executionCallbacks.delete(msg_id);
return callback({
data: 'error',
type: 'text',
stream: 'status'
});
}
return;
}
if (status === 'ok') {
const msg_type = message.header.msg_type;
// http://jupyter-client.readthedocs.io/en/latest/messaging.html#request-reply
if (msg_type === 'execution_reply' || msg_type === 'execute_reply') {
this.executionCallbacks.delete(msg_id);
return callback({
data: 'ok',
type: 'text',
stream: 'status'
});
} else if (msg_type === 'complete_reply') {
return callback(message.content);
} else if (msg_type === 'inspect_reply') {
return callback({
data: message.content.data,
found: message.content.found
});
} else {
this.executionCallbacks.delete(msg_id);
return callback({
data: 'ok',
type: 'text',
stream: 'status'
});
}
}
};
private onStdinMessage(message: JupyterMessage) {
if (!this._isValidMessage(message)) {
return;
}
const msg_type = message.header.msg_type;
if (msg_type === 'input_request') {
vscode.window.showInputBox({ prompt: message.content.prompt }).then(value => {
this.inputReply(value);
});
}
};
private onIOMessage(message: JupyterMessage) {
let callback: Function;
let msg_id;
if (!this._isValidMessage(message)) {
return;
}
const msg_type = message.header.msg_type;
if (msg_type === 'status') {
const status = message.content.execution_state;
this.raiseOnStatusChange(status);
msg_id = message.parent_header !== null ? message.parent_header.msg_id : null;
if (status === 'idle' && (msg_id !== null ? msg_id.startsWith('execute') : null)) {
this._callWatchCallbacks();
}
}
msg_id = message.parent_header.msg_id;
if (msg_id != null && this.executionCallbacks.has(msg_id)) {
callback = this.executionCallbacks.get(msg_id);
}
if (callback == null) {
return;
}
const result = this._parseIOMessage(message);
if (result != null) {
return callback(result);
}
};
public _isValidMessage(message) {
if (message == null) {
return false;
}
if (message.content == null) {
return false;
}
if (message.content.execution_state === 'starting') {
return false;
}
if (message.parent_header == null) {
return false;
}
if (message.parent_header.msg_id == null) {
return false;
}
if (message.parent_header.msg_type == null) {
return false;
}
if (message.header == null) {
return false;
}
if (message.header.msg_id == null) {
return false;
}
if (message.header.msg_type == null) {
return false;
}
return true;
};
public dispose() {
this.shutdown();
if (this.kernelProcess != null) {
this._kill();
fs.unlink(this.connectionFile);
}
this.shellSocket.close();
this.controlSocket.close();
this.ioSocket.close();
this.stdinSocket.close();
super.dispose();
};
public _getUsername() {
return process.env.LOGNAME || process.env.USER || process.env.LNAME || process.env.USERNAME;
};
public _createMessage(msg_type, msg_id) {
if (msg_id == null) {
msg_id = uuid.v4();
}
const message = {
header: {
username: this._getUsername(),
session: '00000000-0000-0000-0000-000000000000',
msg_type: msg_type,
msg_id: msg_id,
date: new Date(),
version: '5.0'
},
metadata: {},
parent_header: {},
content: {}
};
return message;
};
}