CCCHH/spaceapid
CCCHH/spaceapid
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Make the signal handler work properly

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Bendodroid 2023-11-10 03:49:05 +01:00
parent 8a1cf0456a
commit baf73f33e7
Signed by: bendodroid
GPG key ID: 3EEE19A0F73D5FFC
2 changed files with 19 additions and 16 deletions
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22
main.go
View file

@ -8,6 +8,7 @@ import (
"syscall" "syscall"
"gitlab.hamburg.ccc.de/ccchh/spaceapid/handlers" "gitlab.hamburg.ccc.de/ccchh/spaceapid/handlers"
"gitlab.hamburg.ccc.de/ccchh/spaceapid/types"
"gitlab.hamburg.ccc.de/ccchh/spaceapid/util" "gitlab.hamburg.ccc.de/ccchh/spaceapid/util"
) )
@ -21,20 +22,21 @@ func main() {
// Merge old state if present // Merge old state if present
util.MergeOldState(&spaceApiResponse) util.MergeOldState(&spaceApiResponse)
// Register signal handler
sc := make(chan os.Signal, 1)
signal.Notify(sc, syscall.SIGINT, syscall.SIGTERM)
go func(ch chan os.Signal, resp *types.SpaceAPIResponseV14) {
<-ch
log.Println("Saving state and shutting down...")
util.SaveCurrentState(*resp)
os.Exit(0)
}(sc, &spaceApiResponse)
// Register HTTP handlers // Register HTTP handlers
http.HandleFunc("/", handlers.Root(&spaceApiResponse)) http.HandleFunc("/", handlers.Root(&spaceApiResponse))
http.HandleFunc("/state/open", handlers.StateOpen(config.BAUsername, config.BAPassword, &spaceApiResponse)) http.HandleFunc("/state/open", handlers.StateOpen(config.BAUsername, config.BAPassword, &spaceApiResponse))
// Start webserver // Start webserver
log.Println("Starting HTTP server...") log.Println("Starting HTTP server...")
go log.Fatalln(http.ListenAndServe(":8080", nil)) log.Fatalln(http.ListenAndServe(":8080", nil))
// Wait for exit signal
sc := make(chan os.Signal, 1)
signal.Notify(sc, syscall.SIGINT, syscall.SIGTERM)
<-sc
// Save state for next run
log.Println("Saving state and shutting down...")
util.SaveCurrentState(spaceApiResponse)
} }

13
util/util.go
View file

@ -47,12 +47,6 @@ func MergeOldState(response *types.SpaceAPIResponseV14) {
oldState []byte oldState []byte
) )
// Create state directory if not present
err = os.MkdirAll(path.Dir(savedStateJSONPath), 0750)
if err != nil {
log.Fatalln("Failed creating", savedStateJSONPath, ", aborting... error:", err)
}
// Check if state.json is present // Check if state.json is present
_, err = os.Stat(savedStateJSONPath) _, err = os.Stat(savedStateJSONPath)
if err != nil { if err != nil {
@ -84,6 +78,13 @@ removeOld:
} }
func SaveCurrentState(response types.SpaceAPIResponseV14) { func SaveCurrentState(response types.SpaceAPIResponseV14) {
// Create state directory if not present
err := os.MkdirAll(path.Dir(savedStateJSONPath), 0750)
if err != nil {
log.Fatalln("Failed creating", savedStateJSONPath, ", aborting... error:", err)
}
// Open persistent state file for reading
file, err := os.OpenFile(savedStateJSONPath, os.O_RDWR|os.O_CREATE, 0644) file, err := os.OpenFile(savedStateJSONPath, os.O_RDWR|os.O_CREATE, 0644)
if err != nil { if err != nil {
log.Fatalln("Failed opening", savedStateJSONPath, "while trying to save current state... error:", err) log.Fatalln("Failed opening", savedStateJSONPath, "while trying to save current state... error:", err)