Reduce MaxOpenConns to 1 (less SQLITE_BUSY) ?!?

scnserver/cmd/dbhash/main.go

@@ -15,39 +15,46 @@ import (
 func main() {
 	exerr.Init(exerr.ErrorPackageConfigInit{})
 
-	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	ctx, cancel := context.WithTimeout(context.Background(), 1011*time.Second)
 	defer cancel()
 
 	if !langext.InArray("sqlite3", sql.Drivers()) {
 		sqlite.RegisterAsSQLITE3()
 	}
 
-	fmt.Println()
+	for key, schemaObj := range langext.AsSortedBy(langext.MapToArr(schema.PrimarySchema), func(v langext.MapEntry[int, schema.Def]) int { return v.Key }) {
+		var h0 string
+		if key == 1 {
+			h0 = "N/A"
+		} else {
+			var err error
+			h0, err = sq.HashGoSqliteSchema(ctx, schemaObj.Value.SQL)
+			if err != nil {
+				h0 = "ERR"
+			}
+		}
+		fmt.Printf("PrimarySchema    [%d] := %s%s\n", schemaObj.Key, h0, langext.Conditional(schemaObj.Key == schema.PrimarySchemaVersion, "     (active)", ""))
+	}
 
-	for i := 2; i <= schema.PrimarySchemaVersion; i++ {
-		h0, err := sq.HashGoSqliteSchema(ctx, schema.PrimarySchema[i].SQL)
+	fmt.Printf("\n")
+
+	for _, schemaObj := range langext.AsSortedBy(langext.MapToArr(schema.RequestsSchema), func(v langext.MapEntry[int, schema.Def]) int { return v.Key }) {
+		h0, err := sq.HashGoSqliteSchema(ctx, schemaObj.Value.SQL)
 		if err != nil {
 			h0 = "ERR"
 		}
-		fmt.Printf("PrimarySchema%d   := %s\n", i, h0)
+		fmt.Printf("RequestsSchema   [%d] := %s%s\n", schemaObj.Key, h0, langext.Conditional(schemaObj.Key == schema.RequestsSchemaVersion, "     (active)", ""))
 	}
 
-	for i := 1; i <= schema.RequestsSchemaVersion; i++ {
-		h0, err := sq.HashGoSqliteSchema(ctx, schema.RequestsSchema[i].SQL)
+	fmt.Printf("\n")
+
+	for _, schemaObj := range langext.AsSortedBy(langext.MapToArr(schema.LogsSchema), func(v langext.MapEntry[int, schema.Def]) int { return v.Key }) {
+		h0, err := sq.HashGoSqliteSchema(ctx, schemaObj.Value.SQL)
 		if err != nil {
 			h0 = "ERR"
 		}
-		fmt.Printf("RequestsSchema%d  := %s\n", i, h0)
+		fmt.Printf("LogsSchema       [%d] := %s%s\n", schemaObj.Key, h0, langext.Conditional(schemaObj.Key == schema.LogsSchemaVersion, "     (active)", ""))
 	}
 
-	for i := 1; i <= schema.LogsSchemaVersion; i++ {
-		h0, err := sq.HashGoSqliteSchema(ctx, schema.LogsSchema[i].SQL)
-		if err != nil {
-			h0 = "ERR"
-		}
-		fmt.Printf("LogsSchema%d      := %s\n", i, h0)
-	}
-
-	fmt.Println()
-
+	fmt.Printf("\n")
 }

scnserver/config.go

@@ -73,7 +73,7 @@ var configLocHost = func() Config {
 			Journal:          "WAL",
 			Timeout:          5 * time.Second,
 			CheckForeignKeys: false,
-			SingleConn:       false,
+			SingleConn:       true,
 			MaxOpenConns:     5,
 			MaxIdleConns:     5,
 			ConnMaxLifetime:  60 * time.Minute,
@@ -86,7 +86,7 @@ var configLocHost = func() Config {
 			Journal:          "DELETE",
 			Timeout:          5 * time.Second,
 			CheckForeignKeys: false,
-			SingleConn:       false,
+			SingleConn:       true,
 			MaxOpenConns:     5,
 			MaxIdleConns:     5,
 			ConnMaxLifetime:  60 * time.Minute,
@@ -99,7 +99,7 @@ var configLocHost = func() Config {
 			Journal:          "DELETE",
 			Timeout:          5 * time.Second,
 			CheckForeignKeys: false,
-			SingleConn:       false,
+			SingleConn:       true,
 			MaxOpenConns:     5,
 			MaxIdleConns:     5,
 			ConnMaxLifetime:  60 * time.Minute,
@@ -145,7 +145,7 @@ var configLocDocker = func() Config {
 			Journal:          "WAL",
 			Timeout:          5 * time.Second,
 			CheckForeignKeys: false,
-			SingleConn:       false,
+			SingleConn:       true,
 			MaxOpenConns:     5,
 			MaxIdleConns:     5,
 			ConnMaxLifetime:  60 * time.Minute,
@@ -158,7 +158,7 @@ var configLocDocker = func() Config {
 			Journal:          "DELETE",
 			Timeout:          5 * time.Second,
 			CheckForeignKeys: false,
-			SingleConn:       false,
+			SingleConn:       true,
 			MaxOpenConns:     5,
 			MaxIdleConns:     5,
 			ConnMaxLifetime:  60 * time.Minute,
@@ -171,7 +171,7 @@ var configLocDocker = func() Config {
 			Journal:          "DELETE",
 			Timeout:          5 * time.Second,
 			CheckForeignKeys: false,
-			SingleConn:       false,
+			SingleConn:       true,
 			MaxOpenConns:     5,
 			MaxIdleConns:     5,
 			ConnMaxLifetime:  60 * time.Minute,
@@ -216,7 +216,7 @@ var configDev = func() Config {
 			Journal:          "WAL",
 			Timeout:          5 * time.Second,
 			CheckForeignKeys: false,
-			SingleConn:       false,
+			SingleConn:       true,
 			MaxOpenConns:     5,
 			MaxIdleConns:     5,
 			ConnMaxLifetime:  60 * time.Minute,
@@ -229,7 +229,7 @@ var configDev = func() Config {
 			Journal:          "DELETE",
 			Timeout:          5 * time.Second,
 			CheckForeignKeys: false,
-			SingleConn:       false,
+			SingleConn:       true,
 			MaxOpenConns:     5,
 			MaxIdleConns:     5,
 			ConnMaxLifetime:  60 * time.Minute,
@@ -242,7 +242,7 @@ var configDev = func() Config {
 			Journal:          "DELETE",
 			Timeout:          5 * time.Second,
 			CheckForeignKeys: false,
-			SingleConn:       false,
+			SingleConn:       true,
 			MaxOpenConns:     5,
 			MaxIdleConns:     5,
 			ConnMaxLifetime:  60 * time.Minute,
@@ -288,7 +288,7 @@ var configStag = func() Config {
 			Journal:          "WAL",
 			Timeout:          5 * time.Second,
 			CheckForeignKeys: false,
-			SingleConn:       false,
+			SingleConn:       true,
 			MaxOpenConns:     5,
 			MaxIdleConns:     5,
 			ConnMaxLifetime:  60 * time.Minute,
@@ -301,7 +301,7 @@ var configStag = func() Config {
 			Journal:          "DELETE",
 			Timeout:          5 * time.Second,
 			CheckForeignKeys: false,
-			SingleConn:       false,
+			SingleConn:       true,
 			MaxOpenConns:     5,
 			MaxIdleConns:     5,
 			ConnMaxLifetime:  60 * time.Minute,
@@ -314,7 +314,7 @@ var configStag = func() Config {
 			Journal:          "DELETE",
 			Timeout:          5 * time.Second,
 			CheckForeignKeys: false,
-			SingleConn:       false,
+			SingleConn:       true,
 			MaxOpenConns:     5,
 			MaxIdleConns:     5,
 			ConnMaxLifetime:  60 * time.Minute,
@@ -360,7 +360,7 @@ var configProd = func() Config {
 			Journal:          "WAL",
 			Timeout:          5 * time.Second,
 			CheckForeignKeys: false,
-			SingleConn:       false,
+			SingleConn:       true,
 			MaxOpenConns:     5,
 			MaxIdleConns:     5,
 			ConnMaxLifetime:  60 * time.Minute,
@@ -373,7 +373,7 @@ var configProd = func() Config {
 			Journal:          "DELETE",
 			Timeout:          5 * time.Second,
 			CheckForeignKeys: false,
-			SingleConn:       false,
+			SingleConn:       true,
 			MaxOpenConns:     5,
 			MaxIdleConns:     5,
 			ConnMaxLifetime:  60 * time.Minute,
@@ -386,7 +386,7 @@ var configProd = func() Config {
 			Journal:          "DELETE",
 			Timeout:          5 * time.Second,
 			CheckForeignKeys: false,
-			SingleConn:       false,
+			SingleConn:       true,
 			MaxOpenConns:     5,
 			MaxIdleConns:     5,
 			ConnMaxLifetime:  60 * time.Minute,

scnserver/db/impl/logs/database.go

@@ -151,6 +151,8 @@ func (db *Database) Migrate(outerctx context.Context) error {
 			}
 
 			currschema = currschema + 1
+
+			ppReInit = true
 		}
 	}
 

scnserver/db/impl/primary/database.go

@@ -151,6 +151,8 @@ func (db *Database) Migrate(outerctx context.Context) error {
 			}
 
 			currschema = currschema + 1
+
+			ppReInit = true
 		}
 	}
 

scnserver/db/impl/requests/database.go

@@ -151,6 +151,8 @@ func (db *Database) Migrate(outerctx context.Context) error {
 			}
 
 			currschema = currschema + 1
+
+			ppReInit = true
 		}
 	}
 

scnserver/db/schema/assets.go

@@ -1,6 +1,9 @@
 package schema
 
-import _ "embed"
+import (
+	"embed"
+	_ "embed"
+)
 
 type Def struct {
 	SQL       string
@@ -8,75 +11,50 @@ type Def struct {
 	MigScript string
 }
 
-//go:embed primary_1.ddl
-var primarySchema1 string
-
-//go:embed primary_2.ddl
-var primarySchema2 string
-
-//go:embed primary_3.ddl
-var primarySchema3 string
-
-//go:embed primary_4.ddl
-var primarySchema4 string
-
-//go:embed primary_5.ddl
-var primarySchema5 string
-
-//go:embed primary_6.ddl
-var primarySchema6 string
-
-//go:embed primary_7.ddl
-var primarySchema7 string
-
-//go:embed primary_8.ddl
-var primarySchema8 string
-
-//go:embed primary_migration_3_4.ddl
-var primaryMigration_3_4 string
-
-//go:embed primary_migration_4_5.ddl
-var primaryMigration_4_5 string
-
-//go:embed primary_migration_5_6.ddl
-var primaryMigration_5_6 string
-
-//go:embed primary_migration_6_7.ddl
-var primaryMigration_6_7 string
-
-//go:embed primary_migration_7_8.ddl
-var primaryMigration_7_8 string
-
-//go:embed requests_1.ddl
-var requestsSchema1 string
-
-//go:embed logs_1.ddl
-var logsSchema1 string
+//go:embed *.ddl
+//go:embed *.sql
+var assets embed.FS
 
 var PrimarySchema = map[int]Def{
 	0: {"", "", ""},
-	1: {primarySchema1, "f2b2847f32681a7178e405553beea4a324034915a0c5a5dc70b3c6abbcc852f2", ""},
-	2: {primarySchema2, "07ed1449114416ed043084a30e0722a5f97bf172161338d2f7106a8dfd387d0a", ""},
-	3: {primarySchema3, "65c2125ad0e12d02490cf2275f0067ef3c62a8522edf9a35ee8aa3f3c09b12e8", ""},
-	4: {primarySchema4, "cb022156ab0e7aea39dd0c985428c43cae7d60e41ca8e9e5a84c774b3019d2ca", primaryMigration_3_4},
-	5: {primarySchema5, "9d6217ba4a3503cfe090f72569367f95a413bb14e9effe49ffeabbf255bce8dd", primaryMigration_4_5},
-	6: {primarySchema6, "8e83d20bcd008082713f248ae8cd558335a37a37ce90bd8c86e782da640ee160", primaryMigration_5_6},
-	7: {primarySchema7, "90d8dbc460afe025f9b74cda5c16bb8e58b178df275223bd2531907a8d8c36c3", primaryMigration_6_7},
-	8: {primarySchema8, "746f6005c7a573b8816e5993ecd1d949fe2552b0134ba63bab8b4d5b2b5058ad", primaryMigration_7_8},
+	1: {readDDL("primary_1.ddl"), "f2b2847f32681a7178e405553beea4a324034915a0c5a5dc70b3c6abbcc852f2", ""},
+	2: {readDDL("primary_2.ddl"), "07ed1449114416ed043084a30e0722a5f97bf172161338d2f7106a8dfd387d0a", ""},
+	3: {readDDL("primary_3.ddl"), "65c2125ad0e12d02490cf2275f0067ef3c62a8522edf9a35ee8aa3f3c09b12e8", ""},
+	4: {readDDL("primary_4.ddl"), "cb022156ab0e7aea39dd0c985428c43cae7d60e41ca8e9e5a84c774b3019d2ca", readMig("primary_migration_3_4.sql")},
+	5: {readDDL("primary_5.ddl"), "9d6217ba4a3503cfe090f72569367f95a413bb14e9effe49ffeabbf255bce8dd", readMig("primary_migration_4_5.sql")},
+	6: {readDDL("primary_6.ddl"), "8e83d20bcd008082713f248ae8cd558335a37a37ce90bd8c86e782da640ee160", readMig("primary_migration_5_6.sql")},
+	7: {readDDL("primary_7.ddl"), "90d8dbc460afe025f9b74cda5c16bb8e58b178df275223bd2531907a8d8c36c3", readMig("primary_migration_6_7.sql")},
+	8: {readDDL("primary_8.ddl"), "746f6005c7a573b8816e5993ecd1d949fe2552b0134ba63bab8b4d5b2b5058ad", readMig("primary_migration_7_8.sql")},
 }
 
 var PrimarySchemaVersion = len(PrimarySchema) - 1
 
 var RequestsSchema = map[int]Def{
 	0: {"", "", ""},
-	1: {requestsSchema1, "ebb0a5748b605e8215437413b738279670190ca8159b6227cfc2aa13418b41e9", ""},
+	1: {readDDL("requests_1.ddl"), "ebb0a5748b605e8215437413b738279670190ca8159b6227cfc2aa13418b41e9", ""},
 }
 
 var RequestsSchemaVersion = len(RequestsSchema) - 1
 
 var LogsSchema = map[int]Def{
 	0: {"", "", ""},
-	1: {logsSchema1, "65fba477c04095effc3a8e1bb79fe7547b8e52e983f776f156266eddc4f201d7", ""},
+	1: {readDDL("logs_1.ddl"), "65fba477c04095effc3a8e1bb79fe7547b8e52e983f776f156266eddc4f201d7", ""},
 }
 
 var LogsSchemaVersion = len(LogsSchema) - 1
+
+func readDDL(name string) string {
+	data, err := assets.ReadFile(name)
+	if err != nil {
+		panic(err)
+	}
+	return string(data)
+}
+
+func readMig(name string) string {
+	data, err := assets.ReadFile(name)
+	if err != nil {
+		panic(err)
+	}
+	return string(data)
+}