func HomeHandler(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/json; charset=UTF-8")
vars := mux.Vars(r)
brand := vars["brand"]
postalCode := vars["postalCode"]
tracelog.Trace("Brand Value", "main", "Brand is %s", brand)
tracelog.Trace("Postal Code", "main", "PostalCode is %s", postalCode)
// now call the Edmunds API
dealers, dealerErr := DealersAroundZipCode(postalCode, 100, brand, true)
if dealerErr != nil {
ReturnErrorToClient(w, dealerErr, "Error calling dealer service with zip code "+postalCode)
tracelog.Error(dealerErr, "DealersAroundZipCode failed", "HomeHandler")
return
}
w.WriteHeader(http.StatusOK)
var err error
if err = json.NewEncoder(w).Encode(dealers); err != nil {
tracelog.Error(err, "JSON encoding failed", "HomeHandler")
panic(err)
}
}
func HomeHandler(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/json; charset=UTF-8")
vars := mux.Vars(r)
lat := vars["lat"]
lng := vars["lng"]
distance := vars["distance"]
tracelog.Trace("Latitude", "main", "Lat is %s", lat)
tracelog.Trace("Longitude", "main", "Lng is %s", lng)
tracelog.Trace("Distance", "main", "Distance is %s", distance)
// call the GasFeed API
stations, stationErr := NearbyGasStations(lat, lng, distance)
if stationErr != nil {
ReturnErrorToClient(w, stationErr, "Error calling gas station pricing service with lat "+lat+" lng "+lng+" and distance "+distance)
tracelog.Error(stationErr, "NearbyGasStations failed", "HomeHandler")
return
}
w.WriteHeader(http.StatusOK)
var err error
if err = json.NewEncoder(w).Encode(stations); err != nil {
tracelog.Error(err, "JSON encoding failed", "HomeHandler")
panic(err)
}
}
func ReturnErrorToClient(w http.ResponseWriter, err error, msg string) {
tracelog.Error(err, msg, "ReturnErrorToClient")
w.WriteHeader(http.StatusBadRequest)
if encodeError := json.NewEncoder(w).Encode(JsonError{Code: http.StatusBadRequest, Error: msg}); encodeError != nil {
tracelog.Error(encodeError, "JSON encoding failed", "ReturnErrorToClient")
panic("JSON encoding failed")
}
}
func AddBook(jsonStr []byte) bool {
o := orm.NewOrm()
var book Book
err := json.Unmarshal(jsonStr, &book)
if err != nil {
tracelog.Error(err, "Failed to insert json", "model.AddBook")
return false
}
_, err = o.Insert(&book)
if err != nil {
tracelog.Error(err, "Failed to insert book", "model.AddBook")
return false
}
return true
}
func UpdateLibrary(jsonStr []byte) bool {
o := orm.NewOrm()
var lib Library
err := json.Unmarshal(jsonStr, &lib)
if err != nil {
tracelog.Error(err, "Failed to parse json", "model.UpdateLibrary")
return false
}
_, err = o.Update(&lib)
if err != nil {
tracelog.Error(err, "Failed to update lib", "model.UpdateLibrary")
return false
}
return true
}
func AddLibrary(jsonStr []byte) bool {
o := orm.NewOrm()
var lib Library
err := json.Unmarshal(jsonStr, &lib)
if err != nil {
tracelog.Error(err, "Failed to insert json", "model.AddLibrary")
return false
}
_, err = o.Insert(&lib)
if err != nil {
tracelog.Error(err, "Failed to insert lib", "model.AddLibrary")
return false
}
return true
}
func UpdateBook(jsonStr []byte) bool {
o := orm.NewOrm()
var book Book
err := json.Unmarshal(jsonStr, &book)
if err != nil {
tracelog.Error(err, "Failed to parse json", "model.UpdateBook")
return false
}
_, err = o.Update(&book)
if err != nil {
tracelog.Error(err, "Failed to update book", "model.UpdateBook")
return false
}
return true
}
func HomeHandler(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/json; charset=UTF-8")
vars := mux.Vars(r)
lat, latErr := strconv.ParseFloat(vars["lat"], 32)
if latErr != nil {
ReturnErrorToClient(w, latErr, "Invalid latitude value. Expecting a floating point number")
return
}
lng, lngErr := strconv.ParseFloat(vars["lng"], 32)
if lngErr != nil {
ReturnErrorToClient(w, lngErr, "Invalid longitude value. Expecting a floating point number")
return
}
tracelog.Trace("Lat Value", "main", "Lat is %f", lat)
tracelog.Trace("Lng Value", "main", "Lng is %f", lng)
postalCode, postaCodeErr := ReverseGeocodeToPostalCode(lat, lng)
if postaCodeErr != nil {
ReturnErrorToClient(w, postaCodeErr, "Error determining zip code from given coordinates")
return
}
tracelog.Trace("Postal Code Value", "main", "Postal Code is %s", postalCode)
var response = GeocodeResponse{postalCode}
w.WriteHeader(http.StatusOK)
var err error
if err = json.NewEncoder(w).Encode(response); err != nil {
tracelog.Error(err, "An error occurred while encoding json response", "NearbyHandler")
panic(err)
}
}
func DeleteLibrary(libId int64) bool {
o := orm.NewOrm()
if _, err := o.Delete(&Library{Id: libId}); err == nil {
tracelog.Error(err, "Failed to delete lib", "model.DeleteLibrary")
return false
}
return true
}
func DeleteBook(bookId int64) bool {
o := orm.NewOrm()
if _, err := o.Delete(&Book{Id: bookId}); err == nil {
tracelog.Error(err, "Failed to query", "model.DeleteBook")
return false
}
return true
}
// Prepare is called before any controller.
func (service *Service) Prepare() (err error) {
service.MongoSession, err = mongo.CopyMonotonicSession(service.UserID)
if err != nil {
log.Error(err, service.UserID, "Service.Prepare")
return err
}
return err
}
func GetBook(bookId int64) (*Book, error) {
o := orm.NewOrm()
book := Book{Id: bookId}
err := o.Read(&book)
if err != nil {
tracelog.Error(err, "Failed to query", "model.GetBook")
}
return &book, err
}
func AddBookInLibrary(libraryId int64, bookId int64) bool {
o := orm.NewOrm()
_, err := o.Raw(`
INSERT INTO book_library(book_id, library_id) VALUES(?, ?)`, bookId, libraryId).Exec()
if err != nil {
tracelog.Error(err, "Failed to query", "model.AddBookInLibrary")
return false
}
return true
}
func (c *LibraryController) listBooksInLibrary() {
libId, _ := strconv.ParseInt(c.Ctx.Input.Param(":libId"), 10, 64)
books, err := model.GetBooksInLibrary(libId)
if err == orm.ErrNoRows {
tracelog.Error(err, "No result found", "MainController")
}
c.Data["json"] = &books
c.ServeJson()
}
func main() {
tracelog.Start(tracelog.LevelTrace)
//tracelog.Start(tracelog.LevelInfo)
var port = os.Getenv("PORT")
if port == "" {
tracelog.Error(nil, "The PORT environment variable has not been set.", "main")
os.Exit(1)
}
var myGasFeedBaseUrl = os.Getenv("MY_GAS_FEED_BASE_URL")
if myGasFeedBaseUrl == "" {
tracelog.Error(nil, "The MY_GAS_FEED_BASE_URL environment variable has not been set.", "main")
}
SetMyGasFeedBaseUrl(myGasFeedBaseUrl)
var myGasFeedApiKey = os.Getenv("MY_GAS_FEED_API_KEY")
if myGasFeedApiKey == "" {
tracelog.Error(nil, "The MY_GAS_FEED_API_KEY environment variable has not been set.", "main")
}
SetMyGasFeedApiKey(myGasFeedApiKey)
tracelog.Info("Started", "main", "Gas Price Service is starting and listening on port %s", port)
router := mux.NewRouter()
for _, route := range routes {
var handler http.Handler
handler = route.HandlerFunc
handler = Logger(handler, route.Name)
router.Methods(route.Method).Path(route.Pattern).Name(route.Name).Handler(handler)
}
err := http.ListenAndServe(":"+port, router)
if err != nil {
tracelog.Error(err, "An error occurred while attempting to listen and serve", "main")
}
tracelog.Info("Stopped", "main", "Gas Price Service has been terminated")
tracelog.Stop()
}
func (p *MgoCtx) login(db *mgo.Database) bool {
if p.cfg.Pwd == "" {
return true
}
if err := db.Login(p.cfg.User, p.cfg.Pwd); err != nil {
log.Error(err, "Login", "mdb.Startup")
return false
}
return true
}
func GetAllBooks() (*[]Book, error) {
var rows []Book
o := orm.NewOrm()
_, err := o.Raw(`
SELECT b.id, b.name, b.author
FROM book b`).QueryRows(&rows)
if err != nil {
tracelog.Error(err, "Failed to query", "model.GetAllBooks")
}
return &rows, err
}
func NewMgoCtx(cfg *MgoCfg) *MgoCtx {
ctx := &MgoCtx{cfg: cfg}
var err error
if ctx.session, err = mgo.Dial(cfg.Server); err != nil {
log.Error(err, "Dial", "mdb.Startup")
panic(err)
}
ctx.session.SetMode(mgo.Strong, true)
ctx.session.SetSafe(&mgo.Safe{W: 1})
return ctx
}
//Libraries
func GetLibraries() (*[]Library, error) {
var rows []Library
o := orm.NewOrm()
_, err := o.Raw(`
SELECT id, name
FROM library`).QueryRows(&rows)
if err != nil {
tracelog.Error(err, "Failed to GetLibraries", "model.GetLibraries")
}
return &rows, err
}
func publish(message string) {
// Publish "hello world" on topic1.
msgIDs, err := pubsub.Publish(getCtx(), "livefeed", &pubsub.Message{
Data: []byte(message),
})
if err != nil {
log.Println(err)
tracelog.Error(err, `Error publishing to pubsub`, `publish`)
} else {
tracelog.Info(msgIDs[0], "publish", "Message stored in pubsub")
}
}
func main() {
// tracelog.Start(tracelog.LevelTrace)
tracelog.Start(tracelog.LevelInfo)
var port = os.Getenv("PORT")
if port == "" {
tracelog.Error(nil, "The PORT environment variable has not been set.", "main")
os.Exit(1)
}
var mapsApiKey = os.Getenv("GOOGLE_MAPS_API_KEY")
if mapsApiKey == "" {
tracelog.Error(nil, "The GOOGLE_MAPS_API_KEY enviornment variable has not been set.", "main")
os.Exit(2)
}
SetGoogleAPIKey(mapsApiKey)
tracelog.Info("Started", "main", "Google Reverse Geocode Service is starting and listening on port %s", port)
router := mux.NewRouter()
for _, route := range routes {
var handler http.Handler
handler = route.HandlerFunc
handler = Logger(handler, route.Name)
router.Methods(route.Method).Path(route.Pattern).Name(route.Name).Handler(handler)
}
err := http.ListenAndServe(":"+port, router)
if err != nil {
tracelog.Error(err, "An error occurred while attempting to listen and serve.", "main")
os.Exit(3)
}
tracelog.Info("Stopped", "main", "Google Reverse Geocode Service has been terminated")
tracelog.Stop()
}
// Handles a transaction
func HandleTransaction(b []byte) {
tracelog.Trace(TAG, "HandleTransaction", "Converting JSON to Transaction...")
t := TransactionFromJSON(b)
tracelog.Info(TAG, "HandleTransaction", t.String())
msg := messages.TransactionMessage{Hash: t.Hash}
jsonData, err := json.Marshal(msg)
if err != nil {
tracelog.Error(err, "Error trying to marshal", "HandleTransaction")
}
publish(string(jsonData))
}
func GetLibrary(libId int64) (*Library, error) {
o := orm.NewOrm()
lib := Library{Id: libId}
err := o.Read(&lib)
if err == orm.ErrNoRows {
return nil, err
} else if err == orm.ErrMissPK {
tracelog.Error(err, "Failed to GetLibrary", "model.GetLibrary")
return nil, err
} else {
return &lib, err
}
}
func GetBooksInLibrary(libraryId int64) (*[]Book, error) {
var rows []Book
o := orm.NewOrm()
_, err := o.Raw(`
SELECT b.id, b.name, b.author
FROM book b
join book_library con on b.id = con.book_id
join library s on con.library_id = s.id
WHERE s.id = ?`, libraryId).QueryRows(&rows)
if err != nil {
tracelog.Error(err, "Failed to query", "model.GetBooksInLibrary")
}
return &rows, err
}
func (c *BooksController) updateBook() {
respByte, err := ioutil.ReadAll(c.Ctx.Request.Body)
if err != nil {
tracelog.Error(err, "Failed to read response data", "updateBook")
c.Abort("500")
return
}
res := model.UpdateBook(respByte)
if !res {
c.Abort("500")
}
c.Data["json"] = &res
c.ServeJson()
}
// Prepare is called before controllers are called.
func Prepare() *services.Service {
var service services.Service
// TODO: Add Test User To Environment
service.UserID = "testing"
err := service.Prepare()
if err != nil {
log.Error(err, service.UserID, "Prepare")
return nil
}
log.Trace(service.UserID, "Before", "UserID[%s]", service.UserID)
return &service
}
func NearbyHandler(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/json; charset=UTF-8")
vars := mux.Vars(r)
var placeType = vars["type"]
// TODO: may want to validate type
lat, latErr := strconv.ParseFloat(vars["lat"], 32)
if latErr != nil {
ReturnErrorToClient(w, latErr, "Invalid latitude value. Expecting a floating point number")
return
}
lng, lngErr := strconv.ParseFloat(vars["lng"], 32)
if lngErr != nil {
ReturnErrorToClient(w, lngErr, "Invalid longitude value. Expecting a floating point number")
return
}
tracelog.Trace("Type Value", "main", "Type is %s", placeType)
tracelog.Trace("Lat Value", "main", "Lat is %f", lat)
tracelog.Trace("Lng Value", "main", "Lng is %f", lng)
response, nearbyErr := NearbySearch(placeType, lat, lng)
if nearbyErr != nil {
ReturnErrorToClient(w, nearbyErr, "Nearby Search returned an error")
return
}
w.WriteHeader(http.StatusOK)
var err error
if err = json.NewEncoder(w).Encode(response); err != nil {
tracelog.Error(err, "An error occurred while encoding json response", "NearbyHandler")
panic(err)
}
}
