Cryptowatch is a serverless application that allows you to monitor the price of cryptocurrencies. You can set up alerts for when the price of a cryptocurrency increases or decreases by a certain percentage. To set up alert on specific cryptocurrencies, you must first add them to .env(create it from .env.example) file like SYMBOLS="bitcoin,ethereum,...". The interval for checking the price of cryptocurrencies is in minutes and is set in the .env file as EVENT_INTERVAL_MINUTES='0,30' and percentage treshold is set in CHANGE=2. The application is deployed on AWS using AWS CDK.
The cdk.json file tells the CDK Toolkit how to execute your app.
This project is set up like a standard Python project. The initialization
process also creates a virtualenv within this project, stored under the .venv
directory. To create the virtualenv it assumes that there is a python3
(or python for Windows) executable in your path with access to the venv
package. If for any reason the automatic creation of the virtualenv fails,
you can create the virtualenv manually.
- Docker
- AWS Account
- AWS CLI
Install AWS CDK
npm install -g aws-cdk
To manually create a virtualenv on MacOS and Linux:
$ python -m venv .venv
After the init process completes and the virtualenv is created, you can use the following step to activate your virtualenv.
$ source .venv/bin/activate
If you are a Windows platform, you would activate the virtualenv like this:
$ .venv\Scripts\activate.bat
Once the virtualenv is activated, you can install the required dependencies.
$ pip install -r requirements.txt
At this point you can now synthesize the CloudFormation template for this code. This will take long time when running first time.
$ ./cdk-synth.sh {account_id} {region} {optional_cdk_args}
When running first time you must create bootstrap stack using:
$ cdk bootstrap
To deploy stack run:
$ ./cdk-deploy.sh {account_id} {region} {optional_cdk_args}
To add additional dependencies, for example other CDK libraries, just add
them to your setup.py file and rerun the pip install -r requirements.txt
command.
cdk lslist all stacks in the appcdk synthemits the synthesized CloudFormation templatecdk bootstrapdeploys the CDK Toolkit staging stack, see Bootstrappingcdk deploydeploy this stack to your default AWS account/regioncdk diffcompare deployed stack with current statecdk docsopen CDK documentationcdk destroydestroy the stack(s)