myt/myvc-push.js

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JavaScript
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2020-12-02 07:35:26 +00:00
const MyVC = require('./index');
const fs = require('fs-extra');
const typeMap = {
events: {
name: 'EVENT',
abbr: 'EVNT',
color: 'cyan'
},
functions: {
name: 'FUNCTION',
abbr: 'FUNC',
color: 'cyan'
},
procedures: {
name: 'PROCEDURE',
abbr: 'PROC',
color: 'yellow'
},
triggers: {
name: 'TRIGGER',
abbr: 'TRIG',
color: 'blue'
},
views: {
name: 'VIEW',
abbr: 'VIEW',
color: 'magenta'
},
};
class Routine {
construct(path, mark) {
const path = path
const split = path.split('/');
const fullPath = `${this.opts.workspace}/routines/${path}.sql`;
const schema = split[0];
const type = typeMap[split[1]];
const name = split[2];
Object.assign(this, {
path,
mark: mark,
exists: await fs.pathExists(fullPath),
type,
schema,
name,
fullName: `${schema}.${name}`,
isRoutine: ['FUNC', 'PROC'].indexOf(type.abbr) !== -1
});
}
}
const tokens = {
string: {
start: '\'',
end: '\'',
escape: char => char == '\'' || char == '\\'
},
id: {
start: '`',
end: '`',
escape: char => char == '`'
},
multiComment: {
start: '/*',
end: '*/',
escape: () => false
},
singleComment: {
start: '-- ',
end: '\n',
escape: () => false
}
};
const tokenIndex = new Map();
for (const tokenId in tokens) {
const token = tokens[tokenId];
tokenIndex.set(token.start[0], token);
}
class Push {
get myOpts() {
return {
alias: {
force: 'f',
user: 'u',
applyUncommited: 'a'
}
};
}
async run(myvc, opts) {
const conn = await myvc.dbConnect();
this.conn = conn;
const version = await myvc.fetchDbVersion() || {};
console.log(
`Database information:`
+ `\n -> Version: ${version.number}`
+ `\n -> Commit: ${version.gitCommit}`
);
if (!/^[0-9]*$/.test(version.number))
throw new Error('Wrong database version');
if (!version.number)
version.number = '00000';
if (opts.user) {
const [[user]] = conn.query(
`SELECT LEFT(USER(), INSTR(USER(), '@') - 1)`
);
let [[userVersion]] = await conn.query(
`SELECT number, gitCommit
FROM versionUser
WHERE code = ? AND user = ?`,
[opts.code, user]
);
userVersion = userVersion || {};
console.log(
`User information:`
+ `\n -> User: ${user}`
+ `\n -> Version: ${userVersion.number}`
+ `\n -> Commit: ${userVersion.gitCommit}`
);
if (userVersion.number > version.number)
version = userVersion;
}
if (opts.env == 'production') {
console.log(
'\n ( ( ) ( ( ) ) '
+ '\n )\\ ))\\ ) ( /( )\\ ) ( ))\\ ) ( /( ( /( '
+ '\n(()/(()/( )\\()|()/( ( )\\ ) /(()/( )\\()) )\\())'
+ '\n /(_))(_)|(_)\\ /(_)) )\\ (((_) ( )(_))(_)|(_)\\ ((_)\\ '
+ '\n(_))(_)) ((_|_))_ _ ((_))\\___(_(_()|__)) ((_) _((_)'
+ '\n| _ \\ _ \\ / _ \\| \\| | | ((/ __|_ _|_ _| / _ \\| \\| |'
+ '\n| _/ /| (_) | |) | |_| || (__ | | | | | (_) | . |'
+ '\n|_| |_|_\\ \\___/|___/ \\___/ \\___| |_| |___| \\___/|_|\\_|'
+ '\n'
);
if (!opts.force) {
const readline = require('readline');
const rl = readline.createInterface({
input: process.stdin,
output: process.stdout
});
const answer = await new Promise(resolve => {
rl.question('Are you sure? (Default: no) [yes|no] ', resolve);
});
rl.close();
if (answer !== 'yes')
throw new Error('Changes aborted');
}
}
console.log('Applying versions.');
let nChanges = 0;
const versionsDir = `${opts.workspace}/versions`;
function logVersion(type, version, name) {
console.log('', type.bold, `[${version.bold}]`, name);
}
if (await fs.pathExists(versionsDir)) {
const versionDirs = await fs.readdir(versionsDir);
for (const versionDir of versionDirs) {
if (versionDir == 'README.md')
continue;
const match = versionDir.match(/^([0-9]{5})-([a-zA-Z0-9]+)?$/);
if (!match) {
logVersion('[W]'.yellow, '?????', versionDir);
continue;
}
const dirVersion = match[1];
const versionName = match[2];
if (version.number >= dirVersion) {
logVersion('[I]'.blue, dirVersion, versionName);
continue;
}
logVersion('[+]'.green, dirVersion, versionName);
const scriptsDir = `${versionsDir}/${versionDir}`;
const scripts = await fs.readdir(scriptsDir);
for (const script of scripts) {
if (!/^[0-9]{2}-[a-zA-Z0-9_]+\.sql$/.test(script)) {
console.log(` - Ignoring wrong file name: ${script}`);
continue;
}
console.log(` - ${script}`);
await this.queryFromFile(pushConn, `${scriptsDir}/${script}`);
nChanges++;
}
//await this.updateVersion(nChanges, 'number', dirVersion);
}
}
const pushConn = await myvc.createConnection();
console.log('Applying changed routines.');
let nRoutines = 0;
let changes = await fs.pathExists(`${opts.workspace}/.git`)
? await myvc.changedRoutines(version.gitCommit)
: await myvc.cachedChanges();
changes = await this.parseChanges(changes);
await conn.query(
`CREATE TEMPORARY TABLE tProcsPriv
ENGINE = MEMORY
SELECT * FROM mysql.procs_priv LIMIT 0`
);
const routines = [];
for (const change of changes)
if (change.isRoutine)
routines.push([change.schema, change.name]);
if (routines.length) {
await conn.query(
`DROP TEMPORARY TABLE IF EXISTS tProcsPriv`
);
await conn.query(
`CREATE TEMPORARY TABLE tProcsPriv
ENGINE = MEMORY
SELECT * FROM mysql.procs_priv
WHERE (Db, Routine_name) IN (?)`,
[routines]
);
}
for (const change of changes) {
const actionMsg = change.exists ? '[+]'.green : '[-]'.red;
const typeMsg = `[${change.type.abbr}]`[change.type.color];
console.log('', actionMsg.bold, typeMsg.bold, change.fullName);
if (change.exists)
await this.queryFromFile(pushConn, `routines/${change.path}.sql`);
else {
const escapedName =
conn.escapeId(change.schema, true) + '.' +
conn.escapeId(change.name, true);
const query = `DROP ${change.type.name} IF EXISTS ${escapedName}`;
await conn.query(query);
}
nRoutines++;
}
if (routines.length) {
await conn.query(
`INSERT IGNORE INTO mysql.procs_priv
SELECT * FROM tProcsPriv`
);
await conn.query(
`DROP TEMPORARY TABLE tProcsPriv`
);
}
await pushConn.end();
if (nRoutines > 0) {
await conn.query('FLUSH PRIVILEGES');
//await this.updateVersion(nRoutines, 'gitCommit', version.gitCommit);
console.log(` -> ${nRoutines} routines have changed.`);
} else
console.log(` -> No routines changed.`);
}
async parseChanges(changes) {
const routines = [];
for (const change of changes)
routines.push(new Routine(change));
return routines;
}
async updateVersion(nChanges, column, value) {
if (nChanges == 0) return;
const {opts} = this;
column = this.conn.escapeId(column, true);
if (opts.user) {
await this.conn.query(
`INSERT INTO versionUser
SET code = ?,
user = ?,
${column} = ?
ON DUPLICATE KEY UPDATE
${column} = VALUES(${column})`,
[
opts.code,
user,
value
]
);
} else {
await this.conn.query(
`INSERT INTO version
SET code = ?,
${column} = ?
ON DUPLICATE KEY UPDATE
${column} = VALUES(${column})`,
[
opts.code,
value
]
);
}
}
/**
* Executes an SQL script.
*
* @param {String} file Path to the SQL script
* @returns {Array<Result>} The resultset
*/
async queryFromFile(conn, file) {
let results = [];
const stmts = this.querySplit(await fs.readFile(file, 'utf8'));
for (const stmt of stmts)
results = results.concat(await conn.query(stmt));
return results;
}
/**
* Splits an SQL muti-query into a single-query array, it does an small
* parse to correctly handle the DELIMITER statement.
*
* @param {Array<String>} stmts The splitted SQL statements
*/
querySplit(sql) {
const stmts = [];
let i,
char,
token,
escaped,
stmtStart;
let delimiter = ';';
const delimiterRe = /\s*delimiter\s+(\S+)[^\S\r\n]*(?:\r?\n|\r)/yi;
function begins(str) {
let j;
for (j = 0; j < str.length; j++)
if (sql[i + j] != str[j])
return false;
i += j;
return true;
}
for (i = 0; i < sql.length;) {
stmtStart = i;
delimiterRe.lastIndex = i;
const match = sql.match(delimiterRe);
if (match) {
delimiter = match[1];
i += match[0].length;
continue;
}
while (i < sql.length) {
char = sql[i];
if (token) {
if (!escaped && begins(token.end))
token = null;
else {
escaped = !escaped && token.escape(char);
i++;
}
} else {
if (begins(delimiter)) break;
const tok = tokenIndex.get(char);
if (tok && begins(tok.start))
token = tok;
else
i++;
}
}
const len = i - stmtStart - delimiter.length;
stmts.push(sql.substr(stmtStart, len));
}
const len = stmts.length;
if (len > 1 && /^\s*$/.test(stmts[len - 1]))
stmts.pop();
return stmts;
}
}
module.exports = Push;
if (require.main === module)
new MyVC().run(Push);