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Retry connection for Redis/cache #381

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merged 1 commit into from
Dec 18, 2023
Merged

Retry connection for Redis/cache #381

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33 changes: 27 additions & 6 deletions api/main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -53,6 +53,8 @@ const (
defaultRefresh int = 300
// Default timeout to attempt backend reconnect
defaultBackendRetryTimeout int = 7
// Default timeout to attempt redis reconnect
defaultRedisRetryTimeout int = 7
)

// Paths
Expand Down Expand Up @@ -269,6 +271,13 @@ func init() {
EnvVars: []string{"REDIS_DB"},
Destination: &redisConfig.DB,
},
&cli.IntFlag{
Name: "redis-conn-retry",
Value: defaultRedisRetryTimeout,
Usage: "Time in seconds to retry the connection to the cache, if set to 0 the service will stop if the connection fails",
EnvVars: []string{"REDIS_CONN_RETRY"},
Destination: &redisConfig.ConnRetry,
},
&cli.BoolFlag{
Name: "db",
Aliases: []string{"d"},
Expand Down Expand Up @@ -407,7 +416,8 @@ func init() {

// Go go!
func osctrlAPIService() {
// Backend
// ////////////////////////////// Backend
log.Println("Initializing backend...")
for {
db, err = backend.CreateDBManager(dbConfig)
if db != nil {
Expand All @@ -423,10 +433,22 @@ func osctrlAPIService() {
log.Printf("Backend NOT ready! Retrying in %d seconds...\n", dbConfig.ConnRetry)
time.Sleep(time.Duration(dbConfig.ConnRetry) * time.Second)
}
// Redis - cache
redis, err = cache.CreateRedisManager(redisConfig)
if err != nil {
log.Fatalf("Failed to connect to redis - %v", err)
// ////////////////////////////// Cache
log.Println("Initializing cache...")
for {
redis, err = cache.CreateRedisManager(redisConfig)
if redis != nil {
log.Println("Connection to cache successful!")
break
}
if err != nil {
log.Printf("Failed to connect to cache - %v", err)
if redisConfig.ConnRetry == 0 {
log.Fatalf("Connection to cache failed and no retry was set")
}
}
log.Printf("Cache NOT ready! Retrying in %d seconds...\n", redisConfig.ConnRetry)
time.Sleep(time.Duration(redisConfig.ConnRetry) * time.Second)
}
log.Println("Initialize users")
apiUsers = users.CreateUserManager(db.Conn, &jwtConfig)
Expand All @@ -445,7 +467,6 @@ func osctrlAPIService() {
filecarves = carves.CreateFileCarves(db.Conn, apiConfig.Carver, nil)
log.Println("Loading service settings")
loadingSettings()

// Ticker to reload environments
// FIXME Implement Redis cache
// FIXME splay this?
Expand Down
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