This tutorial shows you how run a simple application built with TypeORM.
Step 1. Start CockroachDB
Choose your installation method
You can install a CockroachDB Serverless cluster using either the CockroachDB Cloud Console, a web-based graphical user interface (GUI) tool, or ccloud
, a command-line interface (CLI) tool.
Create a free cluster
Organizations without billing information on file can only create one CockroachDB Serverless cluster.
- If you haven't already, sign up for a CockroachDB Cloud account.
- Log in to your CockroachDB Cloud account.
- On the Clusters page, click Create Cluster.
- On the Select a plan page, select Serverless.
- On the Cloud & Regions page, select a cloud provider (GCP or AWS) in the Cloud provider section.
- In the Regions section, select a region for the cluster. Refer to CockroachDB Cloud Regions for the regions where CockroachDB Serverless clusters can be deployed. To create a multi-region cluster, click Add region and select additional regions. A cluster can have at most six regions.
- Click Next: Capacity.
- On the Capacity page, select Start for free. Click Next: Finalize.
On the Finalize page, click Create cluster.
Your cluster will be created in a few seconds and the Create SQL user dialog will display.
Create a SQL user
The Create SQL user dialog allows you to create a new SQL user and password.
- Enter a username in the SQL user field or use the one provided by default.
- Click Generate & save password.
- Copy the generated password and save it in a secure location.
Click Next.
Currently, all new SQL users are created with admin privileges. For more information and to change the default settings, see [Manage SQL users on a cluster.
Get the connection information
The Connect to cluster dialog shows information about how to connect to your cluster.
- Select Parameters only from the Select option dropdown.
- Copy the connection information for each parameter displayed and save it in a secure location.
Follow these steps to create a CockroachDB Serverless cluster using the ccloud
CLI tool.
The ccloud
CLI tool is in Preview.
Install ccloud
Choose your OS:
You can install ccloud
using either Homebrew or by downloading the binary.
Use Homebrew
- Install Homebrew.
Install using the
ccloud
tap:brew install cockroachdb/tap/ccloud
Download the binary
In a terminal, enter the following command to download and extract the ccloud
binary and add it to your PATH
:
curl https://binaries.cockroachdb.com/ccloud/ccloud_darwin-amd64_0.6.12.tar.gz | tar -xJ && cp -i ccloud /usr/local/bin/
Use the ARM 64 binary if you have an M-series Mac:
curl https://binaries.cockroachdb.com/ccloud/ccloud_darwin-arm64_0.6.12.tar.gz | tar -xJ && cp -i ccloud /usr/local/bin/
In a terminal, enter the following command to download and extract the ccloud
binary and add it to your PATH
:
curl https://binaries.cockroachdb.com/ccloud/ccloud_linux-amd64_0.6.12.tar.gz | tar -xz && cp -i ccloud /usr/local/bin/
In a PowerShell window, enter the following command to download and extract the ccloud
binary and add it to your PATH
:
$ErrorActionPreference = "Stop"; [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $ProgressPreference = 'SilentlyContinue'; $null = New-Item -Type Directory -Force $env:appdata/ccloud; Invoke-WebRequest -Uri https://binaries.cockroachdb.com/ccloud/ccloud_windows-amd64_0.6.12.zip -OutFile ccloud.zip; Expand-Archive -Force -Path ccloud.zip; Copy-Item -Force ccloud/ccloud.exe -Destination $env:appdata/ccloud; $Env:PATH += ";$env:appdata/ccloud"; # We recommend adding ";$env:appdata/ccloud" to the Path variable for your system environment. See https://docs.microsoft.com/powershell/module/microsoft.powershell.core/about/about_environment_variables#saving-changes-to-environment-variables for more information.
Run ccloud quickstart
to create a new cluster, create a SQL user, and retrieve the connection string.
The easiest way of getting started with CockroachDB Cloud is to use ccloud quickstart
. The ccloud quickstart
command guides you through logging in to CockroachDB Cloud, creating a new CockroachDB Serverless cluster, and connecting to the new cluster. Run ccloud quickstart
and follow the instructions:
ccloud quickstart
The ccloud quickstart
command will open a browser window to log you in to CockroachDB Cloud. If you are new to CockroachDB Cloud, you can register using one of the single sign-on (SSO) options, or create a new account using an email address.
The ccloud quickstart
command will prompt you for the cluster name, cloud provider, and cloud provider region, then ask if you want to connect to the cluster. Each prompt has default values that you can select, or change if you want a different option.
Select Parameters only then copy the connection parameters displayed and save them in a secure location.
? How would you like to connect? Parameters only
Looking up cluster ID: succeeded
Creating SQL user: succeeded
Success! Created SQL user
name: maxroach
cluster: 37174250-b944-461f-b1c1-3a99edb6af32
Retrieving cluster info: succeeded
Connection parameters
Database: defaultdb
Host: blue-dog-147.6wr.cockroachlabs.cloud
Password: ThisIsNotAGoodPassword
Port: 26257
Username: maxroach
- If you haven't already, download the CockroachDB binary.
Run the
cockroach start-single-node
command:$ cockroach start-single-node --advertise-addr 'localhost' --insecure
This starts an insecure, single-node cluster.
Take note of the following connection information in the SQL shell welcome text:
CockroachDB node starting at 2021-08-30 17:25:30.06524 +0000 UTC (took 4.3s) build: CCL v21.1.6 @ 2021/07/20 15:33:43 (go1.15.11) webui: http://localhost:8080 sql: postgresql://root@localhost:26257?sslmode=disable
You'll use the
sql
connection string to connect to the cluster later in this tutorial.
The --insecure
flag used in this tutorial is intended for non-production testing only. To run CockroachDB in production, use a secure cluster instead.
Step 2. Get the code
Clone the code's GitHub repository:
$ git clone git@github.com:cockroachlabs/example-app-typescript-typeorm.git
Navigate to the repo directory and install the application dependencies:
$ cd example-app-typescript-typeorm
$ npm install
Step 3. Configure your CockroachDB connection
Open the
datasource.ts
file, and comment out thessl: true
,extra
andoptions
configuration properties.In the
datasource.ts
file, uncommentssl: { rejectUnauthorized: false }
.Warning:Only use
ssl: { rejectUnauthorized: false }
in development, for insecure connections.The
DataSource
configuration should look similar to the following:export const AppDataSource = new DataSource({ type: "cockroachdb", url: process.env.DATABASE_URL, ssl: { rejectUnauthorized: false }, // For insecure connections only synchronize: true, logging: false, entities: ["src/entity/**/*.ts"], migrations: ["src/migration/**/*.ts"], subscribers: ["src/subscriber/**/*.ts"], })
Set the
DATABASE_URL
environment variable to the connection string provided in thecockroach
welcome text:export DATABASE_URL="postgresql://root@localhost:26257/defaultdb?sslmode=disable"
Set the
DATABASE_URL
environment variable to a CockroachDB connection string compatible with TypeORM.export DATABASE_URL="<connection-string>"
TypeORM accepts the following format for CockroachDB Serverless connection strings:
postgresql://<username>:<password>@<host>:<port>/<database>
Step 4. Run the code
Start the application:
$ npm start
You should see the following output in your terminal:
Inserting a new account into the database...
Saved a new account.
Printing balances from account 1db0f34a-55e8-42e7-adf1-49e76010b763.
[
Account { id: '1db0f34a-55e8-42e7-adf1-49e76010b763', balance: 1000 }
]
Inserting a new account into the database...
Saved a new account.
Printing balances from account 4e26653a-3821-48c8-a481-47eb73b3e4cc.
[
Account { id: '4e26653a-3821-48c8-a481-47eb73b3e4cc', balance: 250 }
]
Transferring 500 from account 1db0f34a-55e8-42e7-adf1-49e76010b763 to account 4e26653a-3821-48c8-a481-47eb73b3e4cc.
Transfer complete.
Printing balances from account 1db0f34a-55e8-42e7-adf1-49e76010b763.
[
Account { id: '1db0f34a-55e8-42e7-adf1-49e76010b763', balance: 1000 }
]
Printing balances from account 4e26653a-3821-48c8-a481-47eb73b3e4cc.
[
Account { id: '4e26653a-3821-48c8-a481-47eb73b3e4cc', balance: 250 }
]
What's next?
Read more about using the TypeORM.
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