308 lines
7.5 KiB
JavaScript
308 lines
7.5 KiB
JavaScript
'use strict';
|
|
|
|
const {createClient} = require('redis');
|
|
const objValidate = require('../utils/object_validate');
|
|
const conf = require('../conf');
|
|
|
|
const client = createClient({});
|
|
client.connect();
|
|
|
|
function redisPrefix(key){
|
|
return `${conf.redis.prefix}${key}`;
|
|
}
|
|
|
|
class QueryHelper{
|
|
hisroty = []
|
|
constructor(orgin){
|
|
this.orgin = orgin
|
|
this.hisroty.push(orgin.constructor.name);
|
|
}
|
|
|
|
static isNotCycle(modleName, queryHelper){
|
|
if(queryHelper instanceof this){
|
|
if(queryHelper.hisroty.includes(modleName)){
|
|
return true;
|
|
}
|
|
queryHelper.hisroty.push(modleName)
|
|
}
|
|
}
|
|
}
|
|
|
|
class Table{
|
|
static errors = {
|
|
ObjectValidateError: objValidate.ObjectValidateError,
|
|
EntryNameUsed: ()=>{
|
|
let error = new Error('EntryNameUsed');
|
|
error.name = 'EntryNameUsed';
|
|
error.message = `${this.prototype.constructor.name}:${data[this._key]} already exists`;
|
|
error.keys = [{
|
|
key: this._key,
|
|
message: `${this.prototype.constructor.name}:${data[this._key]} already exists`
|
|
}]
|
|
error.status = 409;
|
|
|
|
return error;
|
|
}
|
|
}
|
|
|
|
static redisClient = client;
|
|
|
|
static models = {}
|
|
static register = function(Model){
|
|
Model = Model || this;
|
|
this.models[Model.name] = Model;
|
|
}
|
|
|
|
constructor(data){
|
|
for(let key in data){
|
|
this[key] = data[key];
|
|
}
|
|
}
|
|
|
|
static async get(index, queryHelper){
|
|
try{
|
|
if(typeof index === 'object'){
|
|
index = index[this._key];
|
|
}
|
|
|
|
let result = await client.HGETALL(
|
|
redisPrefix(`${this.prototype.constructor.name}_${index}`)
|
|
);
|
|
|
|
if(!Object.keys(result).length){
|
|
let error = new Error('EntryNotFound');
|
|
error.name = 'EntryNotFound';
|
|
error.message = `${this.prototype.constructor.name}:${index} does not exists`;
|
|
error.status = 404;
|
|
throw error;
|
|
}
|
|
|
|
// Redis always returns strings, use the keyMap schema to turn them
|
|
// back to native values.
|
|
result = objValidate.parseFromString(this._keyMap, result);
|
|
|
|
let instance = new this(result);
|
|
await instance.buildRelations(queryHelper);
|
|
|
|
return instance;
|
|
}catch(error){
|
|
throw error;
|
|
}
|
|
}
|
|
|
|
async buildRelations(queryHelper){
|
|
|
|
for(let [key, options] of Object.entries(this.constructor._keyMap)){
|
|
if(options.model){
|
|
let remoteModel = this.constructor.models[options.model]
|
|
try{
|
|
if(QueryHelper.isNotCycle(remoteModel.name, queryHelper)) continue;
|
|
if(options.rel === 'one'){
|
|
// console.log('relone:', this[key], queryHelper, remoteModel, await remoteModel.get(this[key], queryHelper || new QueryHelper(this)))
|
|
this[key] = await remoteModel.get(this[key] || this[options.localKey || this.constructor._key] , queryHelper || new QueryHelper(this))
|
|
}
|
|
if(options.rel === 'many'){
|
|
this[key] = await remoteModel.listDetail({
|
|
[options.remoteKey]: this[options.localKey || this.constructor._key],
|
|
},queryHelper || new QueryHelper(this))
|
|
|
|
}
|
|
}catch{}
|
|
}
|
|
}
|
|
}
|
|
|
|
static async exists(index){
|
|
if(typeof index === 'object'){
|
|
index = index[this._key];
|
|
}
|
|
|
|
return await client.SISMEMBER(
|
|
redisPrefix(this.prototype.constructor.name),
|
|
index
|
|
);
|
|
}
|
|
|
|
static async list(){
|
|
// return a list of all the index keys for this table.
|
|
try{
|
|
return await client.SMEMBERS(
|
|
redisPrefix(this.prototype.constructor.name)
|
|
);
|
|
|
|
}catch(error){
|
|
throw error;
|
|
}
|
|
}
|
|
|
|
static async listDetail(options, queryHelper){
|
|
|
|
// Return a list of the entries as instances.
|
|
let out = [];
|
|
|
|
for(let entry of await this.list()){
|
|
let instance = await this.get(entry, arguments[arguments.length - 1]);
|
|
if(!options) out.push(instance);
|
|
let matchCount = 0;
|
|
for(let option in options){
|
|
if(instance[option] === options[option] && ++matchCount === Object.keys(options).length){
|
|
out.push(instance);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return out;
|
|
}
|
|
|
|
static findall(...args){
|
|
return this.listDetail(...args);
|
|
}
|
|
|
|
static async create(data){
|
|
// Add a entry to this redis table.
|
|
try{
|
|
|
|
// Validate the passed data by the keyMap schema.
|
|
data = objValidate.processKeys(this._keyMap, data);
|
|
|
|
// Do not allow the caller to overwrite an existing index key,
|
|
if(data[this._key] && await this.exists(data)){
|
|
let error = new Error('EntryNameUsed');
|
|
error.name = 'EntryNameUsed';
|
|
error.message = `${this.prototype.constructor.name}:${data[this._key]} already exists`;
|
|
error.keys = [{
|
|
key: this._key,
|
|
message: `${this.prototype.constructor.name}:${data[this._key]} already exists`
|
|
}]
|
|
error.status = 409;
|
|
|
|
throw error;
|
|
}
|
|
|
|
// Add the key to the members for this redis table
|
|
await client.SADD(
|
|
redisPrefix(this.prototype.constructor.name),
|
|
data[this._key]
|
|
);
|
|
|
|
// Add the values for this entry.
|
|
for(let key of Object.keys(data)){
|
|
if(data[key] === undefined) continue;
|
|
await client.HSET(
|
|
redisPrefix(`${this.prototype.constructor.name}_${data[this._key]}`),
|
|
key,
|
|
objValidate.parseToString(data[key])
|
|
);
|
|
}
|
|
|
|
// return the created redis entry as entry instance.
|
|
return await this.get(data[this._key]);
|
|
} catch(error){
|
|
throw error;
|
|
}
|
|
}
|
|
|
|
async update(data, key){
|
|
// Update an existing entry.
|
|
try{
|
|
// Validate the passed data, ignoring required fields.
|
|
data = objValidate.processKeys(this.constructor._keyMap, data, true);
|
|
|
|
// Check to see if entry name changed.
|
|
if(data[this.constructor._key] && data[this.constructor._key] !== this[this.constructor._key]){
|
|
// Remove the index key from the tables members list.
|
|
|
|
if(data[this.constructor._key] && await this.constructor.exists(data)){
|
|
let error = new Error('EntryNameUsed');
|
|
error.name = 'EntryNameUsed';
|
|
error.message = `${this.constructor.name}:${data[this.constructor._key]} already exists`;
|
|
error.keys = [{
|
|
key: this.constructor._key,
|
|
message: `${this.constructor.name}:${data[this.constructor._key]} already exists`
|
|
}]
|
|
error.status = 409;
|
|
|
|
throw error;
|
|
}
|
|
|
|
await client.SREM(
|
|
redisPrefix(this.constructor.name),
|
|
this[this.constructor._key]
|
|
);
|
|
|
|
// Add the key to the members for this redis table
|
|
await client.SADD(
|
|
redisPrefix(this.constructor.name),
|
|
data[this.constructor._key]
|
|
);
|
|
|
|
await client.RENAME(
|
|
redisPrefix(`${this.constructor.name}_${this[this.constructor._key]}`),
|
|
redisPrefix(`${this.constructor.name}_${data[this.constructor._key]}`),
|
|
);
|
|
|
|
}
|
|
// Update what ever fields that where passed.
|
|
|
|
// Loop over the data fields and apply them to redis
|
|
for(let key of Object.keys(data)){
|
|
this[key] = data[key];
|
|
await client.HSET(
|
|
redisPrefix(`${this.constructor.name}_${this[this.constructor._key]}`),
|
|
key, String(data[key])
|
|
);
|
|
}
|
|
|
|
|
|
return this;
|
|
|
|
} catch(error){
|
|
// Pass any error to the calling function
|
|
throw error;
|
|
}
|
|
}
|
|
|
|
async remove(data){
|
|
// Remove an entry from this table.
|
|
|
|
try{
|
|
// Remove the index key from the tables members list.
|
|
await client.SREM(
|
|
redisPrefix(this.constructor.name),
|
|
this[this.constructor._key]
|
|
);
|
|
|
|
// Remove the entries hash values.
|
|
let count = await client.DEL(
|
|
redisPrefix(`${this.constructor.name}_${this[this.constructor._key]}`)
|
|
);
|
|
|
|
// Return the number of removed values to the caller.
|
|
return this;
|
|
|
|
} catch(error) {
|
|
throw error;
|
|
}
|
|
};
|
|
|
|
toJSON(){
|
|
let result = {};
|
|
for (const [key, value] of Object.entries(this)) {
|
|
if(this.constructor._keyMap[key] && this.constructor._keyMap[key].isPrivate) continue;
|
|
result[key] = value;
|
|
}
|
|
|
|
return result
|
|
|
|
// return JSON.stringify(result);
|
|
}
|
|
|
|
toString(){
|
|
return this[this.constructor._key];
|
|
}
|
|
|
|
}
|
|
|
|
|
|
module.exports = Table; |