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Chapter 7: prettier

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This commit is contained in:
Beth Griggs
2020-05-20 12:05:00 +01:00
parent a0cf6a254c
commit 85007a6879
12 changed files with 269 additions and 262 deletions
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Chapter07/leveldb-app/tasks.js
+15 -15
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@@ -1,26 +1,26 @@
const levelup = require('levelup')
const leveldown = require('leveldown')
const levelup = require("levelup");
const leveldown = require("leveldown");
const db = levelup(leveldown('./data'))
const db = levelup(leveldown("./data"));
const task = process.argv[2]
const task = process.argv[2];
if (!task) {
listTasks()
listTasks();
} else {
addTask()
addTask();
}
function addTask() {
const key = `Task: ${Math.random().toString(32).replace('.', '')}`
db.put(key, task, (err) => {
if (err) throw err
listTasks()
})
const key = `Task: ${Math.random().toString(32).replace(".", "")}`;
db.put(key, task, (err) => {
if (err) throw err;
listTasks();
});
}
function listTasks() {
db.createReadStream().on('data', (data) => {
console.log(data.key.toString(), '=', data.value.toString())
})
}
db.createReadStream().on("data", (data) => {
console.log(data.key.toString(), "=", data.value.toString());
});
}
Chapter07/leveldb-filter/filter.js
+16 -20
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@@ -1,25 +1,21 @@
const levelup = require('levelup')
const leveldown = require('leveldown')
const db = levelup(leveldown('./data'))
const levelup = require("levelup");
const leveldown = require("leveldown");
const db = levelup(leveldown("./data"));
db.put('Task:1', '')
db.put('Task:2', '')
db.put('Task:3', '')
db.put('Task:4', '')
db.put("Task:1", "");
db.put("Task:2", "");
db.put("Task:3", "");
db.put("Task:4", "");
db.createReadStream({
gte: 'Task:1',
lte: 'Task:3'
}).on('data', function (data) {
console.log(data.key.toString())
})
gte: "Task:1",
lte: "Task:3",
}).on("data", function (data) {
console.log(data.key.toString());
});
db.batch()
.put('forename', 'Beth')
.put('surname', 'Griggs')
.del('forename')
.write(() => console.log('Batch operations complete.'))
.put("forename", "Beth")
.put("surname", "Griggs")
.del("forename")
.write(() => console.log("Batch operations complete."));
Chapter07/leveldb-memdown-app/tasks.js
+15 -15
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@@ -1,26 +1,26 @@
const levelup = require('levelup')
const leveldown = require('leveldown')
const levelup = require("levelup");
const leveldown = require("leveldown");
const db = levelup(leveldown('./data'))
const db = levelup(leveldown("./data"));
const task = process.argv[2]
const task = process.argv[2];
if (!task) {
listTasks()
listTasks();
} else {
addTask()
addTask();
}
function addTask() {
const key = `Task: ${Math.random().toString(32).replace('.', '')}`
db.put(key, task, (err) => {
if (err) throw err
listTasks()
})
const key = `Task: ${Math.random().toString(32).replace(".", "")}`;
db.put(key, task, (err) => {
if (err) throw err;
listTasks();
});
}
function listTasks() {
db.createReadStream().on('data', (data) => {
console.log(data.key.toString(), '=', data.value.toString())
})
}
db.createReadStream().on("data", (data) => {
console.log(data.key.toString(), "=", data.value.toString());
});
}
Chapter07/leveldb-sql-app/tasks.js
+15 -15
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@@ -1,26 +1,26 @@
const levelup = require('levelup')
const memdown = require('memdown')
const levelup = require("levelup");
const memdown = require("memdown");
const db = levelup(memdown('./data'))
const db = levelup(memdown("./data"));
const task = process.argv[2]
const task = process.argv[2];
if (!task) {
listTasks()
listTasks();
} else {
addTask()
addTask();
}
function addTask() {
const key = `Task: ${Math.random().toString(32).replace('.', '')}`
db.put(key, task, (err) => {
if (err) throw err
listTasks()
})
const key = `Task: ${Math.random().toString(32).replace(".", "")}`;
db.put(key, task, (err) => {
if (err) throw err;
listTasks();
});
}
function listTasks() {
db.createReadStream().on('data', (data) => {
console.log(data.key.toString(), '=', data.value.toString())
})
}
db.createReadStream().on("data", (data) => {
console.log(data.key.toString(), "=", data.value.toString());
});
}
Chapter07/mongodb-app/tasks.js
+36 -31
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@@ -1,42 +1,47 @@
const {
MongoClient
} = require('mongodb')
const task = process.argv[2]
const { MongoClient } = require("mongodb");
const task = process.argv[2];
const URI = 'mongodb://localhost:27017/'
const URI = "mongodb://localhost:27017/";
MongoClient.connect(URI, {
useUnifiedTopology: true
}, connected)
MongoClient.connect(
URI,
{
useUnifiedTopology: true,
},
connected
);
function connected(err, client) {
if (err) throw err
const tasks = client.db('tasklist').collection('tasks')
if (err) throw err;
const tasks = client.db("tasklist").collection("tasks");
if (task) {
addTask(client, tasks)
} else {
listTasks(client, tasks)
}
if (task) {
addTask(client, tasks);
} else {
listTasks(client, tasks);
}
}
function addTask(client, tasks) {
tasks.insertOne({
task: task
}, (err) => {
if (err) throw err
console.log("New Task: ", task);
listTasks(client, tasks)
})
tasks.insertOne(
{
task: task,
},
(err) => {
if (err) throw err;
console.log("New Task: ", task);
listTasks(client, tasks);
}
);
}
function listTasks(client, tasks) {
tasks.find().each((err, doc) => {
if (err) throw err
if (!doc) {
client.close()
return
}
console.log(doc)
})
}
tasks.find().each((err, doc) => {
if (err) throw err;
if (!doc) {
client.close();
return;
}
console.log(doc);
});
}
Chapter07/mongoose-app/tasks.js
+14 -15
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@@ -1,23 +1,22 @@
const mongoose = require('mongoose');
const URI = 'mongodb://localhost:27017/customers'
const mongoose = require("mongoose");
const URI = "mongodb://localhost:27017/customers";
mongoose.connect(URI, {
useNewUrlParser: true,
useUnifiedTopology: true
})
useNewUrlParser: true,
useUnifiedTopology: true,
});
const Customer = mongoose.model('Customer', {
forename: String,
surname: String
})
const Customer = mongoose.model("Customer", {
forename: String,
surname: String,
});
const customer_1 = new Customer({
forename: 'Beth',
surname: 'Griggs'
})
forename: "Beth",
surname: "Griggs",
});
customer_1.save().then((doc) => {
console.log('Added new customer', doc.forename, doc.surname)
})
console.log("Added new customer", doc.forename, doc.surname);
});
Chapter07/mysql-app/index.js
+26 -24
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@@ -1,38 +1,40 @@
require('dotenv').config()
const mysql = require('mysql')
require("dotenv").config();
const mysql = require("mysql");
const db = mysql.createConnection({
user: process.env.DB_MYSQL_USER,
password: process.env.DB_MYSQL_PASSWORD
})
user: process.env.DB_MYSQL_USER,
password: process.env.DB_MYSQL_PASSWORD,
});
db.query('CREATE DATABASE tasks')
db.query('USE tasks')
db.query("CREATE DATABASE tasks");
db.query("USE tasks");
db.query(
'CREATE TABLE tasks.tasks (' +
'id INT NOT NULL AUTO_INCREMENT, ' +
'task TEXT NOT NULL, PRIMARY KEY ( id )' +
')')
"CREATE TABLE tasks.tasks (" +
"id INT NOT NULL AUTO_INCREMENT, " +
"task TEXT NOT NULL, PRIMARY KEY ( id )" +
")"
);
const ignore = new Set([
'ER_DB_CREATE_EXISTS', 'ER_TABLE_EXISTS_ERROR'
])
const ignore = new Set(["ER_DB_CREATE_EXISTS", "ER_TABLE_EXISTS_ERROR"]);
db.on('error', (err) => {
if (ignore.has(err.code)) return
throw err
})
db.on("error", (err) => {
if (ignore.has(err.code)) return;
throw err;
});
db.query(`
INSERT INTO tasks.tasks (task)
VALUES ("Walk the dog");
`)
`);
db.query(`
db.query(
`
SELECT * FROM tasks.tasks;
`, (err, results) => {
console.log(results)
})
`,
(err, results) => {
console.log(results);
}
);
db.end()
db.end();
Chapter07/mysql-app/insert.js
+30 -25
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@@ -1,40 +1,45 @@
require('dotenv').config()
const mysql = require('mysql')
require("dotenv").config();
const mysql = require("mysql");
const db = mysql.createConnection({
user: process.env.DB_MYSQL_USER,
password: process.env.DB_MYSQL_PASSWORD
})
user: process.env.DB_MYSQL_USER,
password: process.env.DB_MYSQL_PASSWORD,
});
db.query('CREATE DATABASE tasks')
db.query('USE tasks')
db.query("CREATE DATABASE tasks");
db.query("USE tasks");
db.query(
'CREATE TABLE tasks.tasks (' +
'id INT NOT NULL AUTO_INCREMENT, ' +
'task TEXT NOT NULL, PRIMARY KEY ( id )' +
')')
"CREATE TABLE tasks.tasks (" +
"id INT NOT NULL AUTO_INCREMENT, " +
"task TEXT NOT NULL, PRIMARY KEY ( id )" +
")"
);
const ignore = new Set([
'ER_DB_CREATE_EXISTS', 'ER_TABLE_EXISTS_ERROR'
])
const ignore = new Set(["ER_DB_CREATE_EXISTS", "ER_TABLE_EXISTS_ERROR"]);
db.on('error', (err) => {
if (ignore.has(err.code)) return
throw err
})
db.on("error", (err) => {
if (ignore.has(err.code)) return;
throw err;
});
if (process.argv[2]) {
db.query(`
db.query(
`
INSERT INTO tasks.tasks (task)
VALUES (?);
`, [process.argv[2]])
`,
[process.argv[2]]
);
}
db.query(`
db.query(
`
SELECT * FROM tasks.tasks;
`, (err, results, fields) => {
console.log(results)
})
`,
(err, results, fields) => {
console.log(results);
}
);
db.end()
db.end();
Chapter07/postgres-app/tasks.js
+26 -26
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@@ -1,32 +1,32 @@
require('dotenv').config()
const pg = require('pg')
const db = new pg.Client()
const task = process.argv[2]
require("dotenv").config();
const pg = require("pg");
const db = new pg.Client();
const task = process.argv[2];
const CREATE_TABLE_SQL = `CREATE TABLE IF NOT EXISTS tasks
(id SERIAL, task TEXT NOT NULL, PRIMARY KEY ( id ))`
const INSERT_TASK_SQL = `INSERT INTO tasks (task) VALUES ($1);`
const GET_TASKS_SQL = `SELECT * FROM tasks;`
(id SERIAL, task TEXT NOT NULL, PRIMARY KEY ( id ))`;
const INSERT_TASK_SQL = `INSERT INTO tasks (task) VALUES ($1);`;
const GET_TASKS_SQL = `SELECT * FROM tasks;`;
db.connect((err) => {
if (err) throw err
db.query(CREATE_TABLE_SQL, (err) => {
if (err) throw err
if (task) {
db.query(INSERT_TASK_SQL, [task], (err) => {
if (err) throw err
listTasks()
})
} else {
listTasks()
}
})
})
if (err) throw err;
db.query(CREATE_TABLE_SQL, (err) => {
if (err) throw err;
if (task) {
db.query(INSERT_TASK_SQL, [task], (err) => {
if (err) throw err;
listTasks();
});
} else {
listTasks();
}
});
});
function listTasks() {
db.query(GET_TASKS_SQL, (err, results) => {
if (err) throw err
console.log(results.rows);
db.end()
})
}
db.query(GET_TASKS_SQL, (err, results) => {
if (err) throw err;
console.log(results.rows);
db.end();
});
}
Chapter07/postgres-object-app/tasks.js
+26 -26
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@@ -1,32 +1,32 @@
require('dotenv').config()
const pg = require('pg')
const db = new pg.Client()
const task = process.argv[2]
require("dotenv").config();
const pg = require("pg");
const db = new pg.Client();
const task = process.argv[2];
const CREATE_TABLE_SQL = `CREATE TABLE IF NOT EXISTS task_docs
(id SERIAL, doc jsonb);`
const INSERT_TASK_SQL = `INSERT INTO task_docs (doc) VALUES ($1);`
const GET_TASKS_SQL = `SELECT * FROM task_docs;`
(id SERIAL, doc jsonb);`;
const INSERT_TASK_SQL = `INSERT INTO task_docs (doc) VALUES ($1);`;
const GET_TASKS_SQL = `SELECT * FROM task_docs;`;
db.connect((err) => {
if (err) throw err
db.query(CREATE_TABLE_SQL, (err) => {
if (err) throw err
if (task) {
db.query(INSERT_TASK_SQL, [task], (err) => {
if (err) throw err
listTasks()
})
} else {
listTasks()
}
})
})
if (err) throw err;
db.query(CREATE_TABLE_SQL, (err) => {
if (err) throw err;
if (task) {
db.query(INSERT_TASK_SQL, [task], (err) => {
if (err) throw err;
listTasks();
});
} else {
listTasks();
}
});
});
function listTasks() {
db.query(GET_TASKS_SQL, (err, results) => {
if (err) throw err
console.log(results.rows);
db.end()
})
}
db.query(GET_TASKS_SQL, (err, results) => {
if (err) throw err;
console.log(results.rows);
db.end();
});
}
Chapter07/redis-app/tasks-auth.js
+26 -26
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@@ -1,37 +1,37 @@
const redis = require('redis')
const redis = require("redis");
const client = redis.createClient({
port: 6380,
password: "PASSWORD"
})
const task = process.argv[2]
port: 6380,
password: "PASSWORD",
});
const task = process.argv[2];
client.on('error', (err) => {
console.log("Error:", err)
})
client.on("error", (err) => {
console.log("Error:", err);
});
if (!task) {
listTasks()
listTasks();
} else {
addTask(task)
addTask(task);
}
function addTask(task) {
const key = `Task: ${Math.random().toString(32).replace('.', '')}`
client.hmset(key, {
task
})
listTasks()
const key = `Task: ${Math.random().toString(32).replace(".", "")}`;
client.hmset(key, {
task,
});
listTasks();
}
function listTasks() {
client.keys('Task:*', (err, keys) => {
if (err) throw err
keys.forEach(key => {
client.hgetall(key, (err, task) => {
if (err) throw err
console.log(task)
})
})
client.quit()
})
}
client.keys("Task:*", (err, keys) => {
if (err) throw err;
keys.forEach((key) => {
client.hgetall(key, (err, task) => {
if (err) throw err;
console.log(task);
});
});
client.quit();
});
}
Chapter07/redis-app/tasks.js
+24 -24
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@@ -1,34 +1,34 @@
const redis = require('redis')
const client = redis.createClient()
const task = process.argv[2]
const redis = require("redis");
const client = redis.createClient();
const task = process.argv[2];
client.on('error', (err) => {
console.log("Error:", err)
})
client.on("error", (err) => {
console.log("Error:", err);
});
if (!task) {
listTasks()
listTasks();
} else {
addTask(task)
addTask(task);
}
function addTask(task) {
const key = `Task: ${Math.random().toString(32).replace('.', '')}`
client.hmset(key, {
task
})
listTasks()
const key = `Task: ${Math.random().toString(32).replace(".", "")}`;
client.hmset(key, {
task,
});
listTasks();
}
function listTasks() {
client.keys('Task:*', (err, keys) => {
if (err) throw err
keys.forEach(key => {
client.hgetall(key, (err, task) => {
if (err) throw err
console.log(task)
})
})
client.quit()
})
}
client.keys("Task:*", (err, keys) => {
if (err) throw err;
keys.forEach((key) => {
client.hgetall(key, (err, task) => {
if (err) throw err;
console.log(task);
});
});
client.quit();
});
}