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import env from "../env";
import { v1 as NEO4J } from "neo4j-driver";
import { startOfHour } from "date-fns";
import PQueue from "p-queue";
import knex from "knex";
let count = 0;
const queue = new PQueue({ concurrency: 5 });
queue.on("active", () => (count % 1000 === 0 ? console.log(count++) : count++));
// 1. Connect to Neo4j database
const neo4j = NEO4J.driver(
env.NEO4J_DB_URI,
NEO4J.auth.basic(env.NEO4J_DB_USERNAME, env.NEO4J_DB_PASSWORD)
);
// 2. Connect to Postgres database
const postgres = knex({
client: "postgres",
connection: {
host: env.DB_HOST,
database: env.DB_NAME,
user: env.DB_USER,
password: env.DB_PASSWORD
}
});
(async function() {
const startTime = Date.now();
// 3. [NEO4J] Get all links
const session = neo4j.session();
const { records } = await session.run(
"MATCH (l:URL) WITH COUNT(l) as count RETURN count"
);
const total = records[0].get("count").toNumber();
const limit = 20000;
function main(index = 0) {
queue.add(
() =>
new Promise((resolve, reject) => {
session
.run(
"MATCH (l:URL) WITH l SKIP $skip LIMIT $limit " +
"OPTIONAL MATCH (l)-[:USES]->(d) " +
"OPTIONAL MATCH (l)<-[:CREATED]-(u) " +
"OPTIONAL MATCH (v)-[:VISITED]->(l) " +
"OPTIONAL MATCH (v)-[:BROWSED_BY]->(b) " +
"OPTIONAL MATCH (v)-[:OS]->(o) " +
"OPTIONAL MATCH (v)-[:LOCATED_IN]->(c) " +
"OPTIONAL MATCH (v)-[:REFERRED_BY]->(r) " +
"OPTIONAL MATCH (v)-[:VISITED_IN]->(dd) " +
"WITH l, u, d, COLLECT([b.browser, o.os, c.country, r.referrer, dd.date]) as stats " +
"RETURN l, u.email as email, d.name as domain, stats",
{ limit: limit, skip: index * limit }
)
.subscribe({
onNext(record) {
queue.add(async () => {
const link = record.get("l").properties;
const email = record.get("email");
const address = record.get("domain");
const stats = record.get("stats");
// 4. Merge and normalize stats based on hour
const visits: Record<
string,
Record<string, number | Record<string, number>>
> = {} as any;
stats.forEach(([b, o, country, referrer, date]) => {
if (b && o && country && referrer && date) {
const dateHour = startOfHour(
new Date(date)
).toISOString();
const browser = b.toLowerCase();
const os = o === "Mac Os X" ? "macos" : o.toLowerCase();
visits[dateHour] = {
...visits[dateHour],
total:
(((visits[dateHour] &&
visits[dateHour].total) as number) || 0) + 1,
[`br_${browser}`]:
(((visits[dateHour] &&
visits[dateHour][`br_${browser}`]) as number) ||
0) + 1,
[`os_${os}`]:
(((visits[dateHour] &&
visits[dateHour][`os_${os}`]) as number) || 0) + 1,
countries: {
...((visits[dateHour] || {}).countries as {}),
[country.toLowerCase()]:
((visits[dateHour] &&
visits[dateHour].countries[
country.toLowerCase()
]) ||
0) + 1
},
referrers: {
...((visits[dateHour] || {}).referrers as {}),
[referrer.toLowerCase()]:
((visits[dateHour] &&
visits[dateHour].referrers[
referrer.toLowerCase()
]) ||
0) + 1
}
};
}
});
// 5. [Postgres] Find matching user and or domain
const [user, domain] = await Promise.all([
email &&
postgres<User>("users")
.where({ email })
.first(),
address &&
postgres<Domain>("domains")
.where({ address })
.first()
]);
// 6. [Postgres] Create link
const data = {
address: link.id,
banned: !!link.banned,
domain_id: domain ? domain.id : null,
password: link.password,
target: link.target,
user_id: user ? user.id : null,
...(link.count && { visit_count: link.count.toNumber() }),
...(link.createdAt && { created_at: link.createdAt })
};
const res = await postgres<Link>("links").insert(data, "id");
const link_id = res[0];
// 7. [Postgres] Create visits
const newVisits = Object.entries(visits).map(
([date, details]) => ({
link_id,
created_at: date,
countries: details.countries as Record<string, number>,
referrers: details.referrers as Record<string, number>,
total: details.total as number,
br_chrome: details.br_chrome as number,
br_edge: details.br_edge as number,
br_firefox: details.br_firefox as number,
br_ie: details.br_ie as number,
br_opera: details.br_opera as number,
br_other: details.br_other as number,
br_safari: details.br_safari as number,
os_android: details.os_android as number,
os_ios: details.os_ios as number,
os_linux: details.os_linux as number,
os_macos: details.os_macos as number,
os_other: details.os_other as number,
os_windows: details.os_windows as number
})
);
await postgres<Visit>("visits").insert(newVisits);
});
},
onCompleted() {
session.close();
if ((index + 1) * limit < total) {
queue.add(() => main(index + 1));
} else {
queue.add(() => {
const endTime = Date.now();
console.log(
`✅ Done! It took ${(endTime - startTime) /
1000} seconds.`
);
});
}
resolve(null);
},
onError(error) {
session.close();
if ((index + 1) * limit < total) {
queue.add(() => main(index + 1));
}
reject(error);
}
});
})
);
}
main();
})();
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