Print out repository releases with go-github

Question

I am very new to Go and am having issues printing out all releases for a given repo using the go-github api.

I am adapting my code from the example in the project here.

This is the code I have so far.

package main

import (
  "fmt"
  "github.com/google/go-github/github"
  "golang.org/x/oauth2"
)

func main() {

// authentication
ts := oauth2.StaticTokenSource(&oauth2.Token{AccessToken: "XXX"})
tc := oauth2.NewClient(oauth2.NoContext, ts)

client := github.NewClient(tc)

// list all releases for single repo
fmt.Println("Releases for repo")
opt := &github.ListOptions{Page: 2, PerPage: 10}
releases, _, err := client.Repositories.ListReleases("hashicorp", "terraform", opt)

if err != nil {
    fmt.Printf("error: %v\n", err)
} else {
    for _, release := range releases {
        fmt.Printf("%v\n", release)
    }
}

This works and runs okay (no errors at least), but when I run it, the code doesn't return anything. I have a feeling I am missing something simple but am stuck scratching my head.

Answer 1

From the GitHub documentation on the list releases API:

This returns a list of releases, which does not include regular Git tags that have not been associated with a release. To get a list of Git tags, use the Repository Tags API.

Since the repository you specified contains only tags and not releases, nothing is returned.

Changing ListReleases to ListTags yields output similar to the following:

Releases for repo
{0xc2081e1a10 github.Commit{SHA:"d8292227960eab405863ffbc5d13cc85839aa2db", URL:"https://api.github.com/repos/hashicorp/terraform/commits/d8292227960eab405863ffbc5d13cc85839aa2db"} 0xc2081e1a50 0xc2081e1a60}
{0xc2081e1c40 github.Commit{SHA:"4ed2c8d956d2eae83a2a3750290711ce7fa1ec76", URL:"https://api.github.com/repos/hashicorp/terraform/commits/4ed2c8d956d2eae83a2a3750290711ce7fa1ec76"} 0xc2081e1c60 0xc2081e1c70}
{0xc2081e1ca0 github.Commit{SHA:"33e11f0eba1b634849784151b29f69314bfae827", URL:"https://api.github.com/repos/hashicorp/terraform/commits/33e11f0eba1b634849784151b29f69314bfae827"} 0xc2081e1cb0 0xc2081e1cc0}
{0xc2081e1cf0 github.Commit{SHA:"8175d7f82134d378234a407e529853da681af07e", URL:"https://api.github.com/repos/hashicorp/terraform/commits/8175d7f82134d378234a407e529853da681af07e"} 0xc2081e1d10 0xc2081e1d20}
{0xc2081e1d50 github.Commit{SHA:"166efa1ba0c7aa2fb5a7230f787c8499c765786e", URL:"https://api.github.com/repos/hashicorp/terraform/commits/166efa1ba0c7aa2fb5a7230f787c8499c765786e"} 0xc2081e1d60 0xc2081e1d70}
{0xc2081e1da0 github.Commit{SHA:"1894e985557f010a4bca873c5b10bedb1cd7de5d", URL:"https://api.github.com/repos/hashicorp/terraform/commits/1894e985557f010a4bca873c5b10bedb1cd7de5d"} 0xc2081e1dc0 0xc2081e1dd0}
{0xc2081e1e00 github.Commit{SHA:"0bc0c03fece07c4f21ee5195743116a4d418f234", URL:"https://api.github.com/repos/hashicorp/terraform/commits/0bc0c03fece07c4f21ee5195743116a4d418f234"} 0xc2081e1e10 0xc2081e1e20}
{0xc2081e1e50 github.Commit{SHA:"4e11ed4327fa638a4c2587489a8660c69beb4047", URL:"https://api.github.com/repos/hashicorp/terraform/commits/4e11ed4327fa638a4c2587489a8660c69beb4047"} 0xc2081e1e70 0xc2081e1e80}
{0xc2081e1eb0 github.Commit{SHA:"a4cf3fec1c8341041f41897ea84781e6be9b1dad", URL:"https://api.github.com/repos/hashicorp/terraform/commits/a4cf3fec1c8341041f41897ea84781e6be9b1dad"} 0xc2081e1ec0 0xc2081e1ed0}
{0xc2081e1f00 github.Commit{SHA:"146d081b65aba3e0f183d6e4b26f3e794fabaebf", URL:"https://api.github.com/repos/hashicorp/terraform/commits/146d081b65aba3e0f183d6e4b26f3e794fabaebf"} 0xc2081e1f20 0xc2081e1f30}