/zio-cassandra-finch-http4s-doobie-auth-example

A Scala and ZIO playground which happens to be an auth service.

Primary LanguageScala

the-who

A Scala and ZIO playground which happens to be an auth service.

Run

Finch server and In memory DB

  • ./sbt app/run

Cassandra DB

  • brew cask install java11
  • brew install cassandra (will also install cqlsh)
  • Cassandra doesn't work with java 14 (we are using java 11)
  • Some jvm options doesn't work so we have to edit /usr/local/etc/cassandra/jvm.options
  • Launch with cassandra -f
  • Stop with ctrl c or ps to get the PID and then kill <PID>
  • Default host and port is 127.0.0.1:9042
  • cqlsh will connect there by default
  • CREATE KEYSPACE IF NOT EXISTS thewho_dummy WITH REPLICATION = { 'class' : 'SimpleStrategy', 'replication_factor' : 1 };
  • Edit app/Main and build.sbt to use cassandra instead of in memory db

Http4s server

  • Edit app/Main and build.sbt to use http4s instead of finch. See server/http4s/Server

Postgres DB

  • Edit app/Main and build.sbt to use postgres instead of in memory db
  • Add 127.0.0.1 postgres to your /etc/hosts file
  • docker-compose up
  • docker exec -it postgres bash
  • psql -d postgres -U postgres

Endpoints

ENDPOINT METHOD INPUT OUTPUT STATUS CODES
/signup POST Credential TokenResponse 201, 209, 422, 500
/login GET, POST Credential TokenResponse 200, 401 403, 404, 422, 500
/change-password POST CredentialSecretUpdateRequest TokenResponse 200, 401 403, 404, 422, 500
/signout POST Credential empty 204, 401 403, 404, 422, 500
/find-credential-id POST UserCredentialIdRequest UserCredentialIdResponse 200, 401 403, 404, 422, 500 
Credential:                    { id: String, secret: String }
CredentialSecretUpdateRequest: { oldCredential: Credential, newSecret: String }
TokenResponse:                 { token: String }
UserCredentialIdRequest:       { token: String }
UserCredentialIdResponse:      { credentialId: String }

Test

Load test (Gatling)

  • ./sbt gatling/gatling:test

Other tests

  • ./sbt test

Troubleshooting

  • To generate key pairs:
openssl genrsa -out private.pem 1024
openssl rsa -in private.pem -pubout -outform PEM -out public_key.pem
openssl pkcs8 -topk8 -inform PEM -in private.pem -out private_key.pem -nocrypt

the last line is needed because of the format java uses.

  • Sending json thru httpie:
echo '{ "id": "Salvador", "secret": "Dalí" }' | http POST http://127.0.0.1:8080/signup -v
echo '{ "oldCredential": { "id": "Salvador", "secret": "Dalí" }, "newSecret": "lanadanisman" }' | http POST http://127.0.0.1:8080/change-password -v