-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Separating functions into files - Adding command-line argument for authorID - Implementing concurrency for additional requests - Adding all results to a map[int]string - Fixing a possible panic if AuthorID slice is empty
- Loading branch information
Showing
3 changed files
with
177 additions
and
131 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,123 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "encoding/xml" | ||
| "fmt" | ||
| "io/ioutil" | ||
| "net/http" | ||
| "net/url" | ||
| "strconv" | ||
| ) | ||
|
|
||
| /* This function requests a page from the API. */ | ||
| func requestPage(page int, AuthorID int, endpointBase string) (map[int]string, int, error) { | ||
| req, err := prepareRequest(endpointBase, page, AuthorID) | ||
| if err != nil { | ||
| return make(map[int]string), 0, err | ||
| } | ||
|
|
||
| /* | ||
| * resp is of type *http.Response | ||
| */ | ||
| resp, err := doRequest(req) | ||
| if err != nil { | ||
| return make(map[int]string), 0, err | ||
| } | ||
|
|
||
| /* | ||
| * var 'more' is an int. | ||
| * If the API needs to paginate the response, more will indicate how many | ||
| * pages need to be requested for a full list of book titles. | ||
| * If there is no need to paginate, more will default to 0. | ||
| */ | ||
| mapTitles, more, err := parseResponse(resp) | ||
| if err != nil { | ||
| return make(map[int]string), 0, err | ||
| } | ||
|
|
||
| return mapTitles, more, nil | ||
| } | ||
|
|
||
| func prepareRequest(endpointBase string, page int, AuthorID int) (*http.Request, error) { | ||
| /* | ||
| * Here, 'u' is a url object. | ||
| */ | ||
| u, err := url.Parse(endpointBase) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| /* | ||
| * Here, we make a query 'q' out of url object 'u' | ||
| */ | ||
| q := u.Query() | ||
| q.Set("key", `kDkKnUxiz8cRBJhVjrtSA`) | ||
| q.Set("id", strconv.Itoa(AuthorID)) | ||
| q.Set("page", strconv.Itoa(page)) | ||
|
|
||
| /* | ||
| * Here, 's' is our fully constructed URL string | ||
| */ | ||
| u.RawQuery = q.Encode() | ||
| s := u.String() | ||
| fmt.Println(s) | ||
|
|
||
| req, err := http.NewRequest("GET", s, nil) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return req, nil | ||
| } | ||
|
|
||
| func doRequest(req *http.Request) (*http.Response, error) { | ||
| client := &http.Client{} | ||
|
|
||
| resp, err := client.Do(req) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return resp, nil | ||
| } | ||
|
|
||
| func parseResponse(resp *http.Response) (map[int]string, int, error) { | ||
| requestBytes, err := ioutil.ReadAll(resp.Body) | ||
| if err != nil { | ||
| return make(map[int]string), 0, err | ||
| } | ||
|
|
||
| var graq GoodReadsAuthorQuery | ||
|
|
||
| err = xml.Unmarshal(requestBytes, &graq) | ||
| if err != nil { | ||
| return make(map[int]string), 0, err | ||
| } | ||
|
|
||
| var requestTitles = make(map[int]string) | ||
|
|
||
| for key, bookValue := range graq.Author.Books.Book { | ||
| requestTitles[key] = bookValue.Title | ||
| } | ||
|
|
||
| more, err := checkForMore(&graq) | ||
| if err != nil { | ||
| return make(map[int]string), 0, err | ||
| } | ||
|
|
||
| return requestTitles, more, nil | ||
| } | ||
|
|
||
| func checkForMore(graq *GoodReadsAuthorQuery) (int, error) { | ||
| var start, end, total int | ||
|
|
||
| start = graq.Author.Books.Start | ||
| end = graq.Author.Books.End | ||
| total = graq.Author.Books.Total | ||
|
|
||
| if total != end { | ||
| return (total-end)/(end-start+1) + 1, nil | ||
| } | ||
|
|
||
| return 0, nil | ||
| } |