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REST API in Go

This is a sample Go project that illustrates a REST service. The code example is a walkthru from a Traversy Media video on YouTube. The application includes a simple REST application with the usual crate, read, update, and delete (CRUD) functions.

Created by David Deal / @dealako

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Dependencies

To build and run the application, the mux router package and the logrus logging package must be installed.

The Makefile in the root folder includes a target to install these:

# Install dependencies
make install-deps

Otherwise, you can install them manually:

# Manually install dependencies
go get -u github.com/gorilla/mux
go get -u github.com/sirupsen/logrus
go get -u github.com/spf13/cobra
go get -u gopkg.in/alexcesaro/statsd.v2

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Code Organization

The models for the sample REST application are in the models folder which consist of a Book, Author and Address objects.

The utils folder contains the command line ascii artwork.

The main business logic is in the cmd folder.

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Build

To build the application, run one of the following commands:

# Using make - will include additional metadata in the binary such as BUILD_TIME, VERSION, git commit/branch, and app name
make

or

make restapi

# Using go build which doesn't include additional metadata
go build

This will generate a binary for the current computer architecture.

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Testing

To execute the unit tests, run:

make test

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Running

To run the application, run the following command. The default port is 8000:

./restapi

or specify a different HTTP port:

./restapi -p 8080

Once the application is running, connect on port 8000 with a web browser, your favorite REST client such as Postman, or other HTTP clients such as cURL or even resty.

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Docker

Docker Build

The Makefile has a target to build a docker image.

make docker

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Docker Run

To run the docker image, simply run:

docker run -it -p 8000:8000 dealako/restapi:<git hash>

for example:

docker run -it -p 8000:8000 dealako/restapi:38d8dff

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Docker Publish

To publish the docker image to hub.docker.com under the dealako project, run:

make docker-push

You will need permissions to push the docker image unless you change the image tag/path.

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API - REST Endpoints

Method	REST Endpoint	Description
GET	/api/books	Retrives all the books
GET	/api/books/{id}	Retrievs a specific book by ID
POST	/api/books	Adds a book
PUT	/api/books/{id}	Updates a book based on the book ID
DELETE	/api/books/{id}	Deletes a specific book based on the ID

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