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Use create-error for better error creation

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This commit is contained in:
calzoneman 2015-09-24 23:36:05 -07:00
parent 5ec9c2b029
commit 20dc871303
7 changed files with 46 additions and 38 deletions
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2
src/channel-storage/channelstore.js
View file

@ -1,6 +1,6 @@
import { FileStore } from './filestore';
var CHANNEL_STORE = new FileStore();
const CHANNEL_STORE = new FileStore();
export function load(channelName) {
return CHANNEL_STORE.load(channelName);

17
src/channel-storage/filestore.js
View file

@ -2,6 +2,7 @@ import * as Promise from 'bluebird';
import { stat } from 'fs';
import * as fs from 'graceful-fs';
import path from 'path';
import { ChannelStateSizeError } from '../errors';
const readFileAsync = Promise.promisify(fs.readFile);
const writeFileAsync = Promise.promisify(fs.writeFile);
@ -18,7 +19,10 @@ export class FileStore {
const filename = this.filenameForChannel(channelName);
return statAsync(filename).then(stats => {
if (stats.size > SIZE_LIMIT) {
throw new Error('Channel state file is too large: ' + stats.size);
throw new ChannelStateSizeError('Channel state file is too large', {
limit: SIZE_LIMIT,
actual: stats.size
});
} else {
return readFileAsync(filename);
}
@ -34,11 +38,12 @@ export class FileStore {
save(channelName, data) {
const filename = this.filenameForChannel(channelName);
const fileContents = new Buffer(JSON.stringify(data), 'utf8');
if (fileContents.length > SIZE_LIMIT) {
let error = new Error('Channel state size is too large');
error.limit = SIZE_LIMIT;
error.size = fileContents.length;
return Promise.reject(error);
if (fileContents.length > 0*SIZE_LIMIT) {
return Promise.reject(new ChannelStateSizeError(
'Channel state size is too large', {
limit: SIZE_LIMIT,
actual: fileContents.length
}));
}
return writeFileAsync(filename, fileContents);