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6
.gitignore
vendored
6
.gitignore
vendored
@ -1,3 +1,5 @@
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*.csv
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*.csv.gz
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*dvf/*.csv
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*dvf/*.sql
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*dvf/*.gz
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node_modules/
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.env
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63
README.md
63
README.md
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# DVF
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Il y a deux sources de données.
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dvf et geodvf
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geodvf contient sensiblement les mêmes données mais avec la latitude et la longitude.
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## DVF
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https://www.data.gouv.fr/fr/datasets/demandes-de-valeurs-foncieres/
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mkdir -p dvf
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curl -L https://www.data.gouv.fr/fr/datasets/r/78348f03-a11c-4a6b-b8db-2acf4fee81b1 -o dvf/2023.csv
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curl -L https://www.data.gouv.fr/fr/datasets/r/87038926-fb31-4959-b2ae-7a24321c599a -o dvf/2022.csv
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curl -L https://www.data.gouv.fr/fr/datasets/r/817204ac-2202-4b4a-98e7-4184d154d98c -o dvf/2021.csv
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@ -10,10 +17,11 @@ https://www.data.gouv.fr/fr/datasets/demandes-de-valeurs-foncieres/
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Voila un sample des données parsées [dvf/sample.json](dvf/sample.json)
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# GEODVF
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## GEODVF
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https://files.data.gouv.fr/geo-dvf/latest/csv/
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mkdir -p geodvf
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curl https://files.data.gouv.fr/geo-dvf/latest/csv/2023/full.csv.gz -o geodvf/2023.csv.gz
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curl https://files.data.gouv.fr/geo-dvf/latest/csv/2022/full.csv.gz -o geodvf/2022.csv.gz
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curl https://files.data.gouv.fr/geo-dvf/latest/csv/2021/full.csv.gz -o geodvf/2021.csv.gz
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@ -24,8 +32,53 @@ Voila un sample des données parsées [geodvf/sample.json](geodvf/sample.json)
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# run
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Cette commande ouvre les fichiers csv et chie du json
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Cette commande ouvre les fichiers csv et chie des inserts mysql en batch
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node parse.js dvf/2023.csv
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node parse.js geodvf/2023.csv.gz
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...
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echo "MYSQL=mysql://user:password@host/database?charset=utf8mb4&connectionLimit=10" > .env
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node parse.js geodvf/2023.csv.gz > geodvf/2023.sql
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pv geodvf/2023.sql | mysql -u user -ppassword -h host database
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```
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CREATE TABLE IF NOT EXISTS dvf (
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id_mutation VARCHAR(255),
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date_mutation DATE,
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numero_disposition VARCHAR(255),
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nature_mutation VARCHAR(255),
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valeur_fonciere DECIMAL(15, 2),
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adresse_numero VARCHAR(255),
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adresse_suffixe VARCHAR(255),
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adresse_nom_voie VARCHAR(255),
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adresse_code_voie VARCHAR(255),
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code_postal VARCHAR(255),
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code_commune VARCHAR(255),
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nom_commune VARCHAR(255),
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code_departement VARCHAR(255),
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ancien_code_commune VARCHAR(255),
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ancien_nom_commune VARCHAR(255),
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id_parcelle VARCHAR(255),
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ancien_id_parcelle VARCHAR(255),
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numero_volume VARCHAR(255),
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lot1_numero VARCHAR(255),
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lot1_surface_carrez DECIMAL(15, 2),
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lot2_numero VARCHAR(255),
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lot2_surface_carrez DECIMAL(15, 2),
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lot3_numero VARCHAR(255),
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lot3_surface_carrez DECIMAL(15, 2),
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lot4_numero VARCHAR(255),
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lot4_surface_carrez DECIMAL(15, 2),
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lot5_numero VARCHAR(255),
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lot5_surface_carrez DECIMAL(15, 2),
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nombre_lots INT,
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code_type_local VARCHAR(255),
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type_local VARCHAR(255),
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surface_reelle_bati DECIMAL(15, 2),
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nombre_pieces_principales INT,
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code_nature_culture VARCHAR(255),
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nature_culture VARCHAR(255),
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code_nature_culture_speciale VARCHAR(255),
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nature_culture_speciale VARCHAR(255),
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surface_terrain DECIMAL(15, 2),
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longitude DECIMAL(10, 6),
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latitude DECIMAL(10, 6)
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);
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```
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13
package-lock.json
generated
13
package-lock.json
generated
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"license": "ISC",
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"dependencies": {
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"csv-parse": "^5.5.6",
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"dotenv": "^16.4.5",
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"moment": "^2.30.1",
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"mysql2": "^3.10.0"
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},
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"node": ">=0.10"
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}
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},
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"node_modules/dotenv": {
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"version": "16.4.5",
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"resolved": "https://registry.npmjs.org/dotenv/-/dotenv-16.4.5.tgz",
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"integrity": "sha512-ZmdL2rui+eB2YwhsWzjInR8LldtZHGDoQ1ugH85ppHKwpUHL7j7rN0Ti9NCnGiQbhaZ11FpR+7ao1dNsmduNUg==",
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"license": "BSD-2-Clause",
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"engines": {
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"node": ">=12"
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},
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"funding": {
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"url": "https://dotenvx.com"
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}
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},
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"node_modules/generate-function": {
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"version": "2.3.1",
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"resolved": "https://registry.npmjs.org/generate-function/-/generate-function-2.3.1.tgz",
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"watch": "gulp watch"
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},
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"dependencies": {
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"csv-parse": "^5.5.6",
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"dotenv": "^16.4.5",
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"moment": "^2.30.1",
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"mysql2": "^3.10.0",
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"csv-parse": "^5.5.6"
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"mysql2": "^3.10.0"
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},
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"engines": {
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"node": ">=21.0.0"
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56
parse.js
56
parse.js
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import { parse } from 'csv-parse';
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import fs from 'node:fs';
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import zlib from 'zlib';
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import mysql from 'mysql2';
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import dotenv from 'dotenv';
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dotenv.config();
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if (process.argv.length != 3) {
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throw new Error('You should give a project dir');
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}
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const file = process.argv[2];
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const delimiter = (file.match(/\.gz$/)) ? ',' : '|';
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// csv parser
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const delimiter = (file.match(/\.gz$/)) ? ',' : '|';
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const parser = parse({
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delimiter,
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columns: true,
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});
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let lines = 0;
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// mysql to escape string
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const connectionString = process.env.MYSQL;
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if (!connectionString) {
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throw new Error('MYSQL environment variable not set');
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}
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const connection = mysql.createConnection(process.env.MYSQL);
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// generate sql
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let columns = [];
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const flushBatch = (batch) => {
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if (batch.length === 0) return;
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const values = batch.map(row => `(${row.map(val => connection.escape(val)).join(', ')})`).join(', ');
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const sql = `INSERT INTO dvf (${columns.join(', ')}) VALUES ${values};`;
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console.log(sql);
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// connection.query(sql, (error, results) => {
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// if (error) throw error;
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// console.log('Inserted rows:', results.affectedRows);
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// });
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};
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// quand quelques ligne de csv sont parsées on les assemble puis on genere le sql
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parser.on('readable', function(){
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let record;
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const batch = [];
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while ((record = parser.read()) !== null) {
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console.log(record);
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lines++;
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// console.log(record);
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// get columns and values to insert and escape them for sql
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if (columns.length === 0) {
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columns = Object.keys(record).map(col => connection.escapeId(col));
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}
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const values = Object.values(record);
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batch.push(values);
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}
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flushBatch(batch);
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});
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parser.on('error', function(err){
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console.error(err.message);
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});
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parser.on('end', function(){
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console.log('end', lines);
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connection.end();
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});
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// ouvre le fichier, et le décompresse si besoin
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if (file.match(/\.gz$/)) fs.createReadStream(file).pipe(zlib.createGunzip()).pipe(parser);
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else fs.createReadStream(file).pipe(parser);
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// affiche la progression
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const interval = setInterval(() => {
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console.log(`found ${lines} lines`);
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}, 1000);
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interval.unref();
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