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Console.ts
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Console.ts
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/** Abstraction over native console
* To create extra categories and capture messages in WebWorker or Compute Worker
*/
import JSONfn from 'json-fn';
/** A console Message */
export interface ConsoleMessage
{
type: string,
time: string,
from: string, // component
message: string,
}
export class Console
{
output = null; // Vuex store, console, webworker instance or a local array [ null ]
buffer:Array<ConsoleMessage> = []; // If we cannot output somewhere put in buffer
_originalConsole = null // avoid circular references
constructor(output:any)
{
this.connect(output);
this.info(`**** INIT AY CONSOLE - MODE: ${this._getOutputType()} ****`);
// this.component = curScope.prototype.name;
}
/** Binds either to Vuex store, WebWorker, direct console or an internal array */
connect(output:any = null)
{
this._originalConsole = console; // We can always use this to output directly to original console
this.output = output;
}
/** Reset the Console, removing all previous messages */
reset()
{
switch(this._getOutputType())
{
case 'store':
this.output.commit('clearConsoleMessages');
break;
case 'buffer':
this.buffer = [];
break;
}
}
_getOutputType():string
{
if( this.output.hasOwnProperty('commit'))
{
return 'store';
}
else if (this.output.hasOwnProperty('assert'))
{
return 'console';
}
else if (this.output.hasOwnProperty('postMessage'))
{
return 'webworker'
}
else
{
// internal storage of messages
return 'buffer';
}
}
/** pass the message allong */
sendMessage(message:ConsoleMessage)
{
// directly output to console
const MESSAGE_TO_CONSOLE_TYPE = {
'info' : 'info',
'geom' : 'info',
'user' : 'user',
'warn' : 'warn',
'error' : 'error',
'exec' : 'info',
}
switch(this._getOutputType())
{
case 'store':
this.output.commit('pushConsoleMessage', message);
break;
case 'console':
let origConsoleFunc = MESSAGE_TO_CONSOLE_TYPE[message.type] || 'log';
try {
this._originalConsole[origConsoleFunc](message.message); // IMPORTANT: don't use output here, because it can lead to unending loops
}
catch(e)
{
console.error(`Console::sendMessage: Could not output data: ${message.message}: ${e}`);
}
break;
case 'webworker':
this.output.postMessage({ type : 'console', payload : { message : message }});
break;
default: // put in buffer
this.buffer.push(message);
this._originalConsole[MESSAGE_TO_CONSOLE_TYPE[message.type]](message.message); // also put into normal console for debug
}
}
newMessage(type:string, message:any)
{
// NOTE: we allow in console mode to output non-strings - for example Objects
//this._originalConsole.log(type, message, this._getOutputType()) // example of debug output
let msgStr = (typeof message === 'string' || this._getOutputType() == 'console') ? message as any : this.stringifyMessage(message);
let newMessage:ConsoleMessage = { type: type, time : this._currentTime() , from: null, message : msgStr };
this.sendMessage(newMessage);
}
stringifyMessage(message:any):string
{
if (message === null || message === undefined)
{
return 'undefined';
}
// Use serialization methods toString of Shapes
let serializatedObj = null;
try
{
serializatedObj = message.toString();
}
catch(e)
{
console.log(`Console.stringifyMessage: Could not simply stringify`)
}
if (!serializatedObj)
{
try {
serializatedObj = JSONfn.stringify(message);
}
catch(e)
{
console.error(`stringifyMessage: Serious error exporting Object to JSON: ${e}`);
return null;
}
}
return serializatedObj;
}
info(message:any)
{
this.newMessage('info', message);
}
log(message:any)
{
this.newMessage('info', message);
}
/** Make a user message */
user(message:any)
{
this.newMessage('user', message);
}
/** log an error */
error(message:any)
{
this.newMessage('error', message);
}
warn(message:any)
{
this.newMessage('warn', message);
}
/** Creation of geometry */
geom(message:any)
{
this.newMessage('geom', message);
}
/** Messages about statement execution */
exec(message:any)
{
this.newMessage('exec', message);
}
_currentTime()
{
let t = new Date();
return `${t.toLocaleTimeString()}.${t.getMilliseconds()}`;
}
getBufferedMessages()
{
return this.buffer;
}
}