Steps to run the project
docker-compose up -d
In total, the cluster consist of 2 shards(with 2 node replica set), 1 config server, 1 mongos router
After that, you need to run ./init.sh and be patient, in the middle of the execution there is a sleep for half a minute, it's done explicitly to let hosts to have enough time to choose the primary nodes.
After that you may want to jumpt into ./server/ folder to run on your host machine node generate.js as a result you'll get a file urls.json which could be imported into sharded DBs to the status of the distribution in the cluster.
Move urls.json into scripts folder then run the following command:
docker exec -it mongos1 bash -c "mongoimport --db shortenerDb --collection urls --jsonArray --file /scripts/urls.json"
To see the status of distribution run the following command:
docker exec -it mongos1 bash -c "mongo < /scripts/show-shard-status.js"
The service is exposing two API entrypoints
- GET
/resolve?q=<shortUrl> - POST
/shorten
For converting full URL into short version, open the terminal and run the following command:
> curl -v "http://localhost:3000/shorten" -X POST -d "{\"url\": \"http://google.com/luckyme\"}" -H "Content-Type: application/json"
For resolving the short URL into full you need to run the following command:
curl -v "http://localhost:3000/resolve?h=<shortUrl>" whereas the shortUrl you can take from the previous command response
if you are running on OSX and experiencing after docker-composer up the following error Cannot start service ... Mounts denied:, you need to add the /etc folder of your host in the Docker preferences (File Sharing), to be able to sync the time for nodes.