hn

Go library for the Hacker News API

Installation

go get -u github.com/peterhellberg/hn

Services

The client currently delegates to implementations of three interfaces: ItemsService, LiveService and UsersService.

Example usage

Showing the current top ten stories

package main

import (
  "fmt"

  "github.com/peterhellberg/hn"
)

func main() {
  hn := hn.DefaultClient

  ids, err := hn.TopStories()
  if err != nil {
    panic(err)
  }

  for i, id := range ids[:10] {
    item, err := hn.Item(id)
    if err != nil {
      panic(err)
    }

    fmt.Println(i, "–", item.Title, "\n   ", item.URL, "\n")
  }
}

Showing the current top ten stories using goroutines, a channel and a wait group

package main

import (
  "fmt"
  "net/http"
  "sync"
  "time"

  "github.com/peterhellberg/hn"
)

type indexItem struct {
  Index int
  Item  *hn.Item
}

var (
  items    = map[int]*hn.Item{}
  messages = make(chan indexItem)
)

func main() {
  hn := hn.NewClient(&http.Client{
    Timeout: time.Duration(5 * time.Second),
  })

  ids, err := hn.TopStories()
  if err != nil {
    panic(err)
  }

  go func() {
    for i := range messages {
      items[i.Index] = i.Item
    }
  }()

  var wg sync.WaitGroup

  for i, id := range ids[:10] {
    wg.Add(1)
    go func(i, id int) {
      defer wg.Done()

      item, err := hn.Item(id)
      if err != nil {
        panic(err)
      }

      messages <- indexItem{i, item}
    }(i, id)
  }

  wg.Wait()

  for i := 0; i < 10; i++ {
    fmt.Println(i, "–", items[i].Title, "\n   ", items[i].URL, "\n")
  }
}

Showing information about a given user (first argument)

package main

import (
  "fmt"
  "os"

  "github.com/peterhellberg/hn"
)

func main() {
  if len(os.Args) < 2 {
    return
  }

  if u, err := hn.DefaultClient.User(os.Args[1]); err == nil {
    fmt.Println("ID:   ", u.ID)
    fmt.Println("About:", u.About)
    fmt.Println("Karma:", u.Karma)
  }
}

License (MIT)

Copyright (c) 2014-2015 Peter Hellberg

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.