Deno で MongoDB のデータを更新 (Update)

//
//  mongo_update.ts
//
//                  May/28/2020
// ----------------------------------------------------------------
function get_current_date_proc ()
{
    const today = new Date ();
    var ddx = (1900 + today.getFullYear ()) + "-" + (today.getMonth () +1)
    ddx += "-" + today.getDate ()

    return ddx
}

// ----------------------------------------------------------------
import { MongoClient } from "https://deno.land/x/[email protected]/mod.ts";
import { config } from "https://deno.land/x/dotenv/mod.ts"

console.log ("*** 開始 ***")

const key:string =Deno.args[0]
const population_in:number =parseInt(Deno.args[1])

console.log (key + "\t" + population_in)

const config_env:any = config()
const user:string = config_env.user
const password:string = config_env.password
const db_name:string = config_env.db
const collection_name:string = config_env.collection

const host:string = user + ':' + password + '@localhost'
const port:number = 27017

const url:string = 'mongodb://' + host + ':' + port

console.log("Connecting to " + host + ":" + port)

const client = new MongoClient()
client.connectWithUri(url)

const db = client.database(db_name)
const cities = db.collection(collection_name)
const date_mod = get_current_date_proc ()

const { matchedCount, modifiedCount, upsertedId } = await cities.updateOne(
  { key: key },
  { $set: { population: population_in, date_mod: date_mod } },
)

console.log ("*** 終了 ***")

// ----------------------------------------------------------------

deno run --allow-net --allow-write --allow-read  --allow-plugin --unstable  mongo_update.ts t1164 78253900