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  • Book Overview & Buying Go Programming Blueprints
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Go Programming Blueprints

Go Programming Blueprints

By : Mat Ryer
4.1 (10)
Buy this Book
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Go Programming Blueprints

Go Programming Blueprints

4.1 (10)
By: Mat Ryer
Buy this Book

Overview of this book

Intended for seasoned Go programmers who want to put their expertise in Go to use to solve big, real-world, modern problems. With a basic understanding of channels and goroutines, you will hone your skills to build tools and programs that are quick and simple. You need not be an expert in distributed systems or technologies in order to deliver solutions capable of great scale. It is assumed that you are familiar with the basic concepts of Go.
Table of Contents (11 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Chat Application with Web Sockets
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1. Chat Application with Web Sockets
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A simple web server
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Modeling a chat room and clients on the server
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Building an HTML and JavaScript chat client
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Tracing code to get a look under the hood
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Summary
2
2. Adding Authentication
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2. Adding Authentication
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Handlers all the way down
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Making a pretty social sign-in page
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Endpoints with dynamic paths
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OAuth2
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Tell the authentication providers about your app
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Implementing external logging in
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Summary
3
3. Three Ways to Implement Profile Pictures
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3. Three Ways to Implement Profile Pictures
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Avatars from the authentication server
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Implementing Gravatar
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Uploading an avatar picture
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Combining all three implementations
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Summary
4
4. Command-line Tools to Find Domain Names
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4. Command-line Tools to Find Domain Names
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Pipe design for command-line tools
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Five simple programs
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Composing all five programs
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Summary
5
5. Building Distributed Systems and Working with Flexible Data
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5. Building Distributed Systems and Working with Flexible Data
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System design
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Installing the environment
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Votes from Twitter
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Counting votes
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Running our solution
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Summary
6
6. Exposing Data and Functionality through a RESTful Data Web Service API
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6. Exposing Data and Functionality through a RESTful Data Web Service API
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RESTful API design
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Sharing data between handlers
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Wrapping handler functions
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Responding
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Understanding the request
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A simple main function to serve our API
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Handling endpoints
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A web client that consumes the API
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Running the solution
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Summary
7
7. Random Recommendations Web Service
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7. Random Recommendations Web Service
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Project overview
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Representing data in code
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Generating random recommendations
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Summary
8
8. Filesystem Backup
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8. Filesystem Backup
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Solution design
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Backup package
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The user command-line tool
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The daemon backup tool
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Testing our solution
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Summary
9
A. Good Practices for a Stable Go Environment
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A. Good Practices for a Stable Go Environment
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Installing Go
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Configuring Go
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Go tools
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Cleaning up, building, and running tests on save
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Summary
10
Index
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Index

Generating random recommendations

In order to obtain the places from which our code will randomly build up recommendations, we need to query the Google Places API. In the meander folder, add the following query.go file:

package meander
type Place struct {
  *googleGeometry `json:"geometry"`
  Name            string         `json:"name"`
  Icon            string         `json:"icon"`
  Photos          []*googlePhoto `json:"photos"`
  Vicinity        string         `json:"vicinity"`
}
type googleResponse struct {
  Results []*Place `json:"results"`
}
type googleGeometry struct {
  *googleLocation `json:"location"`
}
type googleLocation struct {
  Lat float64 `json:"lat"`
  Lng float64 `json:"lng"`
}
type googlePhoto struct {
  PhotoRef string `json:"photo_reference"`
  URL      string `json:"url"`
}

This code defines the structures we will need to parse the JSON response from the Google Places API into usable objects.

Tip

Head over to the Google Places API documentation for an example of the response...

CONTINUE READING
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Tech Concepts
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Programming languages
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Go Programming Blueprints
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