Merge pull request #6 from pk910/sqlite

Support alternative database backend (SQLite)

.gitignore

@@ -4,4 +4,5 @@ temp
 config.yaml
 test-config.yaml
 config-*.yaml
-log-*
+log-*
+tmp-*

cmd/explorer/main.go

@@ -39,7 +39,7 @@ func main() {
 		utils.LogFatal(err, "invalid chain configuration specified, you must specify the slots per epoch, seconds per slot and genesis timestamp in the config file", 0)
 	}
 
-	db.MustInitDB((*types.DatabaseConfig)(&cfg.WriterDatabase), (*types.DatabaseConfig)(&cfg.ReaderDatabase))
+	db.MustInitDB()
 	err = db.ApplyEmbeddedDbSchema(-2)
 	if err != nil {
 		logger.Fatalf("error initializing db schema: %v", err)
@@ -56,11 +56,11 @@ func main() {
 		}
 
 		startFrontend()
-	} else {
-		utils.WaitForCtrlC()
-
-		logger.Println("exiting...")
 	}
+
+	utils.WaitForCtrlC()
+	logger.Println("exiting...")
+	db.MustCloseDB()
 }
 
 func startFrontend() {
@@ -121,8 +121,4 @@ func startFrontend() {
 			logger.WithError(err).Fatal("Error serving frontend")
 		}
 	}()
-
-	utils.WaitForCtrlC()
-
-	logger.Println("exiting...")
 }

config/default.config.yml

@@ -62,17 +62,24 @@ indexer:
   # number of seconds to wait between each epoch (don't overload CL client)
   syncEpochCooldown: 2
 
-
-readerDatabase:
-  host: "127.0.0.1"
-  port: 5432
-  user: ""
-  password: ""
-  name: ""
-
-writerDatabase:
-  host: "127.0.0.1"
-  port: 5432
-  user: ""
-  password: ""
-  name: ""
+# database configuration
+database:
+  engine: "sqlite" # sqlite / pgsql
+
+  # sqlite settings
+  sqlite:
+    file: "./explorer-db.sqlite"
+
+  # pgsql settings
+  pgsql:
+    host: "127.0.0.1"
+    port: 5432
+    user: ""
+    password: ""
+    name: ""
+  pgsqlWriter: # optional separate writer connection (used for replication setups)
+    host: ""
+    port: 5432
+    user: ""
+    password: ""
+    name: ""