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// main.go purpose is to build the interaction layer in between the http endpoints and the http server
// Copyright (C) 2019 Emile Hansmaennel
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package main
import (
"database/sql"
"fmt"
"git.darknebu.la/GalaxySimulator/db_actions"
"git.darknebu.la/GalaxySimulator/structs"
"log"
"net/http"
"strconv"
"github.com/gorilla/mux"
//"git.darknebu.la/GalaxySimulator/structs"
)
var (
db *sql.DB
)
func indexHandler(w http.ResponseWriter, r *http.Request) {
log.Println("[ ] The indexHandler was accessed")
_, _ = fmt.Fprintf(w, indexEndpoint())
}
func newTreeHandler(w http.ResponseWriter, r *http.Request) {
log.Println("[ ] The newTreeHandler was accessed")
// get the width of the most outer box of the tree by parsing http-post parameters
errParseForm := r.ParseForm() // parse the POST form
if errParseForm != nil { // handle errors
panic(errParseForm)
}
// parse the width
width, _ := strconv.ParseFloat(r.Form.Get("w"), 64)
// create a new tree in the database width the given width
newTreeEndpoint(db, width)
_, _ = fmt.Fprintf(w, "OK\n")
}
func insertStarHandler(w http.ResponseWriter, r *http.Request) {
log.Println("[ ] The insertStarHandler was accessed")
// get the star by parsing http-post parameters
errParseForm := r.ParseForm() // parse the POST form
if errParseForm != nil { // handle errors
panic(errParseForm)
}
// get the star coordinates
x, _ := strconv.ParseFloat(r.Form.Get("x"), 64)
y, _ := strconv.ParseFloat(r.Form.Get("y"), 64)
vx, _ := strconv.ParseFloat(r.Form.Get("vx"), 64)
vy, _ := strconv.ParseFloat(r.Form.Get("vy"), 64)
m, _ := strconv.ParseFloat(r.Form.Get("m"), 64)
// get the tree into which the star should be inserted into
index, _ := strconv.ParseInt(r.Form.Get("index"), 10, 64)
// build a star
star := structs.Star2D{
C: structs.Vec2{
X: x,
Y: y,
},
V: structs.Vec2{
X: vx,
Y: vy,
},
M: m,
}
insertStarEndpoint(db, star, index)
}
func insertListHandler(w http.ResponseWriter, r *http.Request) {
log.Println("[ ] The insertStarHandler was accessed")
// get the star by parsing http-post parameters
errParseForm := r.ParseForm() // parse the POST form
if errParseForm != nil { // handle errors
panic(errParseForm)
}
filename := r.Form.Get("filename")
insertListEndpoint(db, filename)
}
func deleteStarsHandler(w http.ResponseWriter, r *http.Request) {
deleteStarsEndpoint(db)
}
func deleteNodesHandler(w http.ResponseWriter, r *http.Request) {
deleteNodesEndpoint(db)
}
func getListOfStarsGoHandler(w http.ResponseWriter, r *http.Request) {
log.Println("[ ] The getListOfStarsGoHandler was accessed")
listOfStars := listOfStarsGoEndpoint(db)
for _, star := range listOfStars {
_, _ = fmt.Fprintf(w, "%v\n", star)
}
}
func getListOfStarsCsvHandler(w http.ResponseWriter, r *http.Request) {
log.Println("[ ] The getListOfStarsCsvHandler was accessed")
listOfStars := listOfStarsCsvEndpoint(db)
for _, star := range listOfStars {
_, _ = fmt.Fprintf(w, "%v\n", star)
}
}
func updateTotalMassHandler(w http.ResponseWriter, r *http.Request) {
log.Println("[ ] The updateTotalMassHandler was accessed")
// get the star by parsing http-post parameters
errParseForm := r.ParseForm() // parse the POST form
if errParseForm != nil { // handle errors
panic(errParseForm)
}
// get the tree into which the star should be inserted into
index, _ := strconv.ParseInt(r.Form.Get("index"), 10, 64)
updateTotalMassEndpoint(db, index)
}
func updateCenterOfMassHandler(w http.ResponseWriter, r *http.Request) {
log.Println("[ ] The updateCenterOfMassHandler was accessed")
// get the star by parsing http-post parameters
errParseForm := r.ParseForm() // parse the POST form
if errParseForm != nil { // handle errors
panic(errParseForm)
}
// get the tree into which the star should be inserted into
index, _ := strconv.ParseInt(r.Form.Get("index"), 10, 64)
updateCenterOfMassEndpoint(db, index)
}
func genForestTreeHandler(w http.ResponseWriter, r *http.Request) {
log.Println("[ ] The genForestTreeHandler was accessed")
vars := mux.Vars(r)
treeindex, parseIntErr := strconv.ParseInt(vars["treeindex"], 10, 64)
if parseIntErr != nil {
panic(parseIntErr)
}
tree := genForestTreeEndpoint(db, treeindex)
_, _ = fmt.Fprintf(w, "%s", tree)
}
func testCalcHandler(w http.ResponseWriter, r *http.Request) {
log.Println("[ ] The testCalcHandler was accessed")
}
func main() {
router := mux.NewRouter()
router.HandleFunc("/", indexHandler).Methods("GET")
router.HandleFunc("/new", newTreeHandler).Methods("POST")
router.HandleFunc("/deleteStars", deleteStarsHandler).Methods("POST")
router.HandleFunc("/deleteNodes", deleteNodesHandler).Methods("POST")
router.HandleFunc("/starlist/go", getListOfStarsGoHandler).Methods("GET")
router.HandleFunc("/starlist/csv", getListOfStarsCsvHandler).Methods("GET")
router.HandleFunc("/insertStar", insertStarHandler).Methods("POST")
router.HandleFunc("/insertList", insertListHandler).Methods("POST")
router.HandleFunc("/updatetotalmass", updateTotalMassHandler).Methods("POST")
router.HandleFunc("/updatecenterofmass", updateCenterOfMassHandler).Methods("POST")
router.HandleFunc("/genforesttree/{treeindex}", genForestTreeHandler).Methods("GET")
router.HandleFunc("/test", testCalcHandler).Methods("POST")
//router.HandleFunc("/metrics", metricHandler).Methods("GET")
//router.HandleFunc("/export/{treeindex}", exportHandler).Methods("POST")
//router.HandleFunc("/nrofgalaxies", nrofgalaxiesHandler).Methods("GET")
db = db_actions.ConnectToDB()
db.SetMaxOpenConns(75)
fmt.Println("Database Container up on port 8081")
log.Fatal(http.ListenAndServe(":8081", router))
}
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