Chat implementation gRPC - GoLang - Cassandra

Clone this repository

cd chatApp-gRPC
go mod tidy
# Starts server - also inserts some mock data into DB
go run main.go  

In another terminal ⤵

go run client/main.go -ID <a userID from cassandraDB>

The above command starts a connection between a client of specified ID and the server

The application architecture is as follows:

• When a user connects to the server, a stream will be created (server side streaming) which streams the persisted messages (which are unread) to the connected user
• After recieving unread messages from server, user is prompted to enter an UUID - a unique ID of any user to send and receive msgs realtime
• After entering an UUID, user can send messages to that particular user
• Meanwhile, if someother user sends a msg to the active user, it gets displayed in the console
• Every message is persisted in DB with flag is_read True|False

Requirements

• Protocol buffer compiler => Download

• Download for windows 32 or 64 bit arch, then unzip into C:\

• In that folder you'll see bin and include folders

• IF WINDOWS => Add the bin folder to the path variable - inside Environment variables

• The Go code generator does not produce output for services by default. If you enable the gRPC plugin then code will be generated to support gRPC.

• Download gRPC plugin

• You can run a cassandra image in docker for development. Just add a keySpace chat_app

  go install google.golang.org/protobuf/cmd/protoc-gen-go@v1.26
  go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@v1.1