Dummy Go App using GQLGEN

Go is used to create scalable infra. Learn more about Go here and setting up Go in Linux.

Flow of this Project

Schema.graphqls -> schema.resolvers.go -> logic/getLogic.go -> postgres -> pqueries.go

The first step after setting up Go, is path

this is for linux export PATH=$PATH:/usr/local/go/bin export GOPATH=/usr/local/go

go version go env

mkdir projectname cd projectname

config

• gqlgen - GraphQL
• pgx - PostgreSQL
• GQLGEN Doc
• To understand more about gqlgen.yml: https://gqlgen.com/config/

Troubleshoot

• Facing issue with migrate(github.com/golang-migrate/migrate v3.5.4+incompatible)
• Use go get -tags 'postgres' -u github.com/golang-migrate/migrate/v4/cmd/migrate/

With these lines I have the most basic structure of Go Server running

1. Initialize Project: go mod init github.com/Divan009/gqlgen-todos

2. Get Dependency: go get github.com/99designs/gqlgen

3. Setup Project: go run github.com/99designs/gqlgen init

4. Run Project: go run ./server.go

5. Whenever you want to Generate the Schema file, use: go run github.com/99designs/gqlgen generate

6. JWT go get github.com/dgrijalva/jwt-go

Create a postgres db using pdAdmin or psql, whichever way you prefer

CREATE TABLE IF NOT EXISTS Users( ID INT NOT NULL UNIQUE AUTO_INCREMENT, Username VARCHAR (127) NOT NULL UNIQUE, Password VARCHAR (127) NOT NULL, PRIMARY KEY (ID) )

CREATE TABLE IF NOT EXISTS Links( ID INT NOT NULL UNIQUE AUTO_INCREMENT, Title VARCHAR (255) , Address VARCHAR (255) , UserID INT , FOREIGN KEY (UserID) REFERENCES Users(ID) , PRIMARY KEY (ID) )

All the imp files explained

• Schema.graphqls - basically where i define the structure or what is to be returned from API. This is the first thing I do.

• Model_gen - This gets generated from the above schema.

• Schema_resolver - for all your functions

• Postgres - I create Db and call it

• pqueries - is where i define db functions

• getLogic - uses the pqueries func

• jwt