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+Promise

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This commit is contained in:
eshengsky
2019-06-19 14:04:31 +08:00
parent 53513a9327
commit a324417752
12 changed files with 757 additions and 1106 deletions
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316
proxy/post.js
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@@ -6,7 +6,6 @@ const tool = require('../utility/tool');
/**
* 为首页数据查询构建条件对象
* @param params 查询参数对象
* @returns {{}}
*/
function getPostsQuery(params) {
const query = {};
@@ -56,37 +55,33 @@ function getPostsQuery(params) {
/**
* 获取首页的文章数据
* @param params 参数对象
* @param callback 回调函数
*/
exports.getPosts = function (params, callback) {
exports.getPosts = params => {
const cache_key = tool.generateKey('posts', params);
redisClient.getItem(cache_key, (err, posts) => {
if (err) {
return callback(err);
}
if (posts) {
return callback(null, posts);
}
let page = parseInt(params.pageIndex) || 1;
const size = parseInt(params.pageSize) || 10;
page = page > 0 ? page : 1;
const options = {};
options.skip = (page - 1) * size;
options.limit = size;
options.sort = params.sortBy === 'title' ? 'Title -CreateTime' : '-CreateTime';
const query = getPostsQuery(params);
postModel.find(query, {}, options, (err, posts) => {
if (err) {
return callback(err);
}
return new Promise((resolve, reject) => {
redisClient.getItem(cache_key).then(posts => {
if (posts) {
redisClient.setItem(cache_key, posts, redisClient.defaultExpired, err => {
if (err) {
return callback(err);
}
});
return resolve(posts);
}
return callback(null, posts);
let page = parseInt(params.pageIndex) || 1;
const size = parseInt(params.pageSize) || 10;
page = page > 0 ? page : 1;
const options = {};
options.skip = (page - 1) * size;
options.limit = size;
options.sort = params.sortBy === 'title' ? 'Title -CreateTime' : '-CreateTime';
const query = getPostsQuery(params);
postModel.find(query, {}, options, (err, posts) => {
if (err) {
return reject(err);
}
if (posts) {
redisClient.setItem(cache_key, posts, redisClient.defaultExpired);
}
return resolve(posts);
});
}, err => {
reject(err);
});
});
};
@@ -94,29 +89,25 @@ exports.getPosts = function (params, callback) {
/**
* 获取首页文章的页数
* @param params 参数对象
* @param callback 回调函数
*/
exports.getPageCount = function (params, callback) {
exports.getPageCount = params => {
const cache_key = tool.generateKey('posts_count', params);
redisClient.getItem(cache_key, (err, pageCount) => {
if (err) {
return callback(err);
}
if (pageCount) {
return callback(null, pageCount);
}
const query = getPostsQuery(params);
postModel.count(query, (err, count) => {
if (err) {
return callback(err);
return new Promise((resolve, reject) => {
redisClient.getItem(cache_key).then(pageCount => {
if (pageCount) {
return resolve(pageCount);
}
const pageCount = count % params.pageSize === 0 ? parseInt(count / params.pageSize) : parseInt(count / params.pageSize) + 1;
redisClient.setItem(cache_key, pageCount, redisClient.defaultExpired, err => {
const query = getPostsQuery(params);
postModel.count(query, (err, count) => {
if (err) {
return callback(err);
return reject(err);
}
const pageCount = count % params.pageSize === 0 ? parseInt(count / params.pageSize) : parseInt(count / params.pageSize) + 1;
redisClient.setItem(cache_key, pageCount, redisClient.defaultExpired);
return resolve(pageCount);
});
return callback(null, pageCount);
}, err => {
reject(err);
});
});
};
@@ -124,31 +115,30 @@ exports.getPageCount = function (params, callback) {
/**
* 根据alias获取文章
* @param alias 文章alias
* @param callback 回调函数
*/
exports.getPostByAlias = function (alias, callback) {
exports.getPostByAlias = alias => {
const cache_key = `article_${alias}`;
// 文章浏览数+1
postModel.update({ Alias: alias }, { $inc: { ViewCount: 1 } })
.exec();
redisClient.getItem(cache_key, (err, article) => {
if (err) {
return callback(err);
}
if (article) {
return callback(null, article);
}
postModel.findOne({ Alias: alias }, (err, article) => {
if (err) {
return callback(err);
}
return new Promise((resolve, reject) => {
redisClient.getItem(cache_key).then(article => {
if (article) {
redisClient.setItem(cache_key, article, redisClient.defaultExpired, err => {
if (err) {
return callback(err);
}
});
return resolve(article);
}
return callback(null, article);
postModel.findOne({ Alias: alias }, (err, article) => {
if (err) {
return reject(err);
}
if (article) {
redisClient.setItem(cache_key, article, redisClient.defaultExpired);
}
return resolve(article);
});
}, err => {
reject(err);
});
});
};
@@ -156,7 +146,6 @@ exports.getPostByAlias = function (alias, callback) {
/**
* 为后台数据查询构建条件对象
* @param params
* @returns {{}}
*/
function getArticlesQuery(params) {
const query = {};
@@ -208,9 +197,8 @@ function getArticlesQuery(params) {
/**
* 获取管理页面的文章数据
* @param params 参数对象
* @param callback 回调函数
*/
exports.getArticles = function (params, callback) {
exports.getArticles = params => {
let page = parseInt(params.pageIndex) || 1;
const size = parseInt(params.pageSize) || 10;
page = page > 0 ? page : 1;
@@ -229,26 +217,29 @@ exports.getArticles = function (params, callback) {
break;
}
const query = getArticlesQuery(params);
postModel.find(query, {}, options, (err, posts) => {
if (err) {
return callback(err);
}
return callback(null, posts);
return new Promise((resolve, reject) => {
postModel.find(query, {}, options, (err, posts) => {
if (err) {
return reject(err);
}
return resolve(posts);
});
});
};
/**
* 获取管理页面的文章数
* @param params 参数对象
* @param callback 回调函数
*/
exports.getArticlesCount = function (params, callback) {
exports.getArticlesCount = params => {
const query = getArticlesQuery(params);
postModel.count(query, (err, count) => {
if (err) {
return callback(err);
}
return callback(null, count);
return new Promise((resolve, reject) => {
postModel.count(query, (err, count) => {
if (err) {
return reject(err);
}
return resolve(count);
});
});
};
@@ -256,107 +247,103 @@ exports.getArticlesCount = function (params, callback) {
* 判断文章Alias是否唯一
* @param alias 文章Alias
* @param articleId 文章Id
* @param callback 回调函数
*/
exports.checkAlias = function (alias, articleId, callback) {
postModel.findOne({ Alias: alias }, (err, article) => {
if (err) {
return callback(err);
}
if (!article) {
return callback(null, true);
}
if (article._id === articleId) {
return callback(null, true);
}
return callback(null, false);
exports.checkAlias = (alias, articleId) => {
return new Promise((resolve, reject) => {
postModel.findOne({ Alias: alias }, (err, article) => {
if (err) {
return reject(err);
}
if (!article) {
return resolve(true);
}
if (article._id === articleId) {
return resolve(true);
}
return resolve(false);
});
});
};
/**
* 根据id获取文章
* @param id 文章id
* @param callback 回调函数
*/
exports.getById = function (id, callback) {
postModel.findById(id, (err, article) => {
if (err) {
return callback(err);
}
return callback(null, article);
exports.getById = id => {
return new Promise((resolve, reject) => {
postModel.findById(id, (err, article) => {
if (err) {
return reject(err);
}
return resolve(article);
});
});
};
/**
* 新增或更新文章
* @param params 参数对象
* @param callback 回调函数
*/
exports.save = function (params, callback) {
let _id = params.UniqueId,
entity = new postModel({
Title: params.Title,
Alias: params.Alias,
Summary: params.Summary,
Source: params.Source,
Content: params.Content,
ContentType: params.ContentType || '',
CategoryId: params.CategoryId,
Labels: params.Labels,
Url: params.Url,
IsDraft: params.IsDraft === 'True',
IsActive: params.IsActive === 'True',
ModifyTime: new Date()
exports.save = params => {
const _id = params.UniqueId;
const entity = new postModel({
Title: params.Title,
Alias: params.Alias,
Summary: params.Summary,
Source: params.Source,
Content: params.Content,
ContentType: params.ContentType || '',
CategoryId: params.CategoryId,
Labels: params.Labels,
Url: params.Url,
IsDraft: params.IsDraft === 'True',
IsActive: params.IsActive === 'True',
ModifyTime: new Date()
});
return new Promise((resolve, reject) => {
postModel.findById(_id, (err, article) => {
if (err) {
return reject(err);
}
if (!article) {
// 新增
entity._id = _id;
entity.IsActive = true;
entity.ViewCount = 0;
entity.CreateTime = new Date();
entity.save(err => {
if (err) {
return reject(err);
}
return resolve();
});
} else {
// 更新
postModel.update({ _id }, entity, err => {
if (err) {
return reject(err);
}
return resolve();
});
}
});
postModel.findById(_id, (err, article) => {
if (err) {
return callback(err);
}
if (!article) {
// 新增
entity._id = _id;
entity.IsActive = true;
entity.ViewCount = 0;
entity.CreateTime = new Date();
entity.save(err => {
if (err) {
return callback(err);
}
return callback(null);
});
} else {
// 更新
postModel.update({ _id }, entity, err => {
if (err) {
return callback(err);
}
return callback(null);
});
}
});
};
/**
* 软删除文章
* @param ids 文章id，多个id以逗号分隔
* @param callback 回调函数
*/
exports.delete = function (ids, callback) {
let idArray = ids.split(','),
hasErr = false,
index = 0;
idArray.forEach(id => {
postModel.update({ _id: id }, { IsActive: false }, err => {
index++;
if (err) {
hasErr = true;
}
if (index === idArray.length) {
if (hasErr) {
return callback(err);
}
return callback(null);
}
exports.delete = ids => {
const idArray = ids.split(',');
const promiseArr = idArray.map(id => {
return postModel.update({ _id: id }, { IsActive: false }).exec()
});
return new Promise((resolve, reject) => {
Promise.all(promiseArr).then(() => {
resolve();
}, err => {
reject(err);
});
});
};
@@ -364,13 +351,14 @@ exports.delete = function (ids, callback) {
/**
* 恢复删除的文章
* @param id 文章id
* @param callback 回调函数
*/
exports.undo = function (id, callback) {
postModel.update({ _id: id }, { IsActive: true }, err => {
if (err) {
return callback(err);
}
return callback(null);
exports.undo = id => {
return new Promise((resolve, reject) => {
postModel.update({ _id: id }, { IsActive: true }, err => {
if (err) {
return reject(err);
}
return resolve();
});
});
};