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Add script to migrate database from MongoDB to PostgreSQL

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TheEssem 2020-07-10 13:31:06 -05:00
parent 2a67b76169
commit a097312620
1 changed files with 76 additions and 0 deletions
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convertdb.js Normal file
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require("dotenv").config();
const { promisify } = require("util");
const { writeFile } = require("fs");
const { Pool } = require("pg");
const pool = new Pool({
user: "esmbot",
host: "localhost",
database: "esmbot",
port: 5432
});
const mongoose = require("mongoose");
mongoose.connect(process.env.MONGO, { poolSize: 10, bufferMaxEntries: 0, reconnectTries: 5000, useNewUrlParser: true, useUnifiedTopology: true });
const guildSchema = new mongoose.Schema({
id: String,
tags: Map,
prefix: String,
warns: Map,
disabledChannels: [String]
});
const Guild = mongoose.model("Guild", guildSchema);
const tweetSchema = new mongoose.Schema({
tweets: [String],
replies: [String],
media: [String],
phrases: [String],
games: [String],
characters: [String],
download: [String],
enabled: Boolean
});
const TweetCollection = mongoose.model("TweetCollection", tweetSchema);
const globalSchema = new mongoose.Schema({
cmdCounts: Map
});
const Global = mongoose.model("Global", globalSchema);
(async () => {
console.log("Migrating guilds...");
const guilds = await Guild.find();
try {
await pool.query("CREATE TABLE guilds ( guild_id VARCHAR(30) NOT NULL, tags json NOT NULL, prefix VARCHAR(15) NOT NULL, warns json NOT NULL, disabled text ARRAY NOT NULL )");
} catch {
console.log("Skipping table creation due to error...");
}
for (const guild of guilds) {
if ((await pool.query("SELECT * FROM guilds WHERE guild_id = $1", [guild.id])).rows.length !== 0) {
await pool.query("UPDATE guilds SET tags = $1, prefix = $2, warns = $3, disabled = $4 WHERE guild_id = $5", [guild.tags, guild.prefix, guild.warns, guild.disabledChannels, guild.id]);
} else {
await pool.query("INSERT INTO guilds (guild_id, tags, prefix, warns, disabled) VALUES ($1, $2, $3, $4, $5)", [guild.id, guild.tags, guild.prefix, guild.warns, guild.disabledChannels]);
}
console.log(`Migrated guild with ID ${guild.id}`);
}
console.log("Migrating Tweets...");
const tweets = await TweetCollection.find();
await promisify(writeFile)("../tweets.json", JSON.stringify(tweets, null, 2));
console.log("Migrating command counts...");
const global = await Global.findOne();
try {
await pool.query("CREATE TABLE counts ( command VARCHAR NOT NULL, count integer NOT NULL )");
} catch {
console.log("Skipping table creation due to error...");
}
console.log(global);
for (const [key, value] of global.cmdCounts) {
if ((await pool.query("SELECT * FROM counts WHERE command = $1", [key])).rows.length !== 0) {
await pool.query("UPDATE counts SET count = $1 WHERE command = $2", [value, key]);
} else {
await pool.query("INSERT INTO counts (command, count) VALUES ($1, $2)", [key, value]);
}
console.log(`Migrated counts for command ${key}`);
}
console.log("Done!");
return;
})();