Fix SqliteSink

sinks/sqliteSink.go

@@ -2,20 +2,32 @@ package sinks
 
 import (
 	"database/sql"
+	"errors"
 	"fmt"
-	_ "github.com/mattn/go-sqlite3"
 	"log"
 	"sort"
 	"strings"
-	"time"
-	"errors"
-	lp "github.com/influxdata/line-protocol"
+
+	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	_ "github.com/mattn/go-sqlite3"
 )
 
+const SQLITE3_TIMESTAMP_NAME = `timestamp`
+const SQLITE3_TIMESTAMP_TYPE = `TIMESTAMP NOT NULL`
+
+type SqliteTable struct {
+	columns     []string
+	coltypes    []string
+	createQuery string
+	insertQuery string
+	primkeys    []string
+}
+
 type SqliteSink struct {
-	Sink
-	db      *sql.DB
-	columns map[string][]string
+	sink
+	db     *sql.DB
+	tables map[string]SqliteTable
 }
 
 type StrList []string
@@ -35,10 +47,10 @@ func (list StrList) Less(i, j int) bool {
 	return si_lower < sj_lower
 }
 
-func (s *SqliteSink) Init(config SinkConfig) error {
+func (s *SqliteSink) Init(config sinkConfig) error {
 	var err error
 	if len(config.Database) == 0 {
-		return errors.New("Not all configuration variables set required by SqliteSink")
+		return errors.New("not all configuration variables set required by SqliteSink")
 	}
 	s.host = config.Host
 	s.port = config.Port
@@ -47,100 +59,187 @@ func (s *SqliteSink) Init(config SinkConfig) error {
 	s.user = config.User
 	s.password = config.Password
 	log.Print("Opening Sqlite3 database ", s.database)
-	s.db, err = sql.Open("sqlite3", fmt.Sprintf("./%s.db", s.database))
+	uri := fmt.Sprintf("file:./%s.db", s.database)
+	if len(s.user) > 0 && len(s.password) > 0 {
+		uri += fmt.Sprintf("?_auth&_auth_user=%s&_auth_pass=%s", s.user, s.password)
+	}
+	s.db, err = sql.Open("sqlite3", uri)
 	if err != nil {
 		log.Fatal(err)
 		s.db = nil
 		return err
 	}
+	s.tables = make(map[string]SqliteTable)
 
 	return nil
 }
 
-func (s *SqliteSink) PrepareLists(measurement string, tags map[string]string, fields map[string]interface{}, t time.Time) ([]string, []string, []string) {
+func getkeylist(point lp.CCMetric, include_meta bool) []string {
 	keys := make([]string, 0)
-	values := make([]string, 0)
-	keytype := make([]string, 0)
-
-	keys = append(keys, "time")
-	values = append(values, fmt.Sprintf("%d", t.Unix()))
-	keytype = append(keytype, fmt.Sprintf("time INT8"))
-	for k, v := range tags {
+	for k := range point.Tags() {
 		keys = append(keys, k)
-		values = append(values, fmt.Sprintf("%q", v))
-		keytype = append(keytype, fmt.Sprintf("%s TEXT", k))
 	}
-	for k, v := range fields {
-		keys = append(keys, k)
-		switch v.(type) {
-		case float32:
-			keytype = append(keytype, fmt.Sprintf("%s FLOAT", k))
-			values = append(values, fmt.Sprintf("%f", v))
-		case float64:
-			keytype = append(keytype, fmt.Sprintf("%s DOUBLE", k))
-			values = append(values, fmt.Sprintf("%f", v))
-		case int64:
-			keytype = append(keytype, fmt.Sprintf("%s INT8", k))
-			values = append(values, fmt.Sprintf("%d", v))
-		case int:
-			keytype = append(keytype, fmt.Sprintf("%s INT", k))
-			values = append(values, fmt.Sprintf("%d", v))
-		case string:
-			keytype = append(keytype, fmt.Sprintf("%s TEXT", k))
-			values = append(values, fmt.Sprintf("%q", v))
+	if include_meta {
+		for k := range point.Meta() {
+			keys = append(keys, k)
 		}
 	}
-	sort.Sort(StrList(keytype))
-	return keytype, keys, values
-}
-
-func Tags2Map(metric lp.MutableMetric) map[string]string {
-	tags := make(map[string]string)
-	for _, t := range metric.TagList() {
-		tags[t.Key] = t.Value
+	for k := range point.Fields() {
+		keys = append(keys, k)
 	}
-	return tags
+	keys = append(keys, SQLITE3_TIMESTAMP_NAME)
+	sort.Sort(StrList(keys))
+	return keys
 }
 
-func Fields2Map(metric lp.MutableMetric) map[string]interface{} {
-	fields := make(map[string]interface{})
-	for _, f := range metric.FieldList() {
-		fields[f.Key] = f.Value
+func getvaluelist(point lp.CCMetric, keys []string) []string {
+	values := make([]string, 0)
+	for _, key := range keys {
+		if key == SQLITE3_TIMESTAMP_NAME {
+			values = append(values, point.Time().String())
+		} else if val, ok := point.GetTag(key); ok {
+			values = append(values, val)
+		} else if val, ok := point.GetMeta(key); ok {
+			values = append(values, val)
+		} else if ival, ok := point.GetField(key); ok {
+			values = append(values, fmt.Sprintf("%v", ival))
+		} else {
+			values = append(values, "NULL")
+		}
 	}
-	return fields
+	return values
+}
+func gettypelist(point lp.CCMetric, keys []string) []string {
+	types := make([]string, 0)
+	for _, key := range keys {
+		if key == SQLITE3_TIMESTAMP_NAME {
+			types = append(types, SQLITE3_TIMESTAMP_TYPE)
+			continue
+		}
+		if point.HasTag(key) {
+			types = append(types, "TEXT")
+			continue
+		}
+		if point.HasMeta(key) {
+			types = append(types, "TEXT")
+			continue
+		}
+		ival, ok := point.GetField(key)
+		if ok {
+			switch ival.(type) {
+			case float64:
+				types = append(types, "DOUBLE")
+			case float32:
+				types = append(types, "FLOAT")
+			case string:
+				types = append(types, "TEXT")
+			case int:
+				types = append(types, "INT")
+			case int64:
+				types = append(types, "INT8")
+			}
+		}
+	}
+	return types
 }
 
-func (s *SqliteSink) Write(point lp.MutableMetric) error {
-    if s.db != nil {
-        measurement := point.Name()
-	    keytype, keys, values := s.PrepareLists(measurement, Tags2Map(point), Fields2Map(point), point.Time())
-	    prim_key := []string{"time", "host"}
-	    if measurement == "cpu" {
-		    prim_key = append(prim_key, "cpu")
-	    } else if measurement == "socket" {
-		    prim_key = append(prim_key, "socket")
-	    }
-	    tx, err := s.db.Begin()
-	    if err == nil {
-		    c := fmt.Sprintf("create table if not exists %s (%s, PRIMARY KEY (%s));", measurement,
-			    strings.Join(keytype, ","),
-			    strings.Join(prim_key, ","))
-		    i := fmt.Sprintf("insert into %s (%s) values(%s);", measurement, strings.Join(keys, ","), strings.Join(values, ","))
-		    _, err = tx.Exec(c)
-		    if err != nil {
-			    log.Println(err)
-		    }
-		    _, err = tx.Exec(i)
-		    if err != nil {
-			    log.Println(err)
-		    }
-		    err = tx.Commit()
-		    if err != nil {
-			    log.Println(err)
-		    }
-	    } else {
-		    log.Println(err)
-	    }
+func getprimkey(keys []string) []string {
+	primkeys := make([]string, 0)
+	primkeys = append(primkeys, SQLITE3_TIMESTAMP_NAME)
+	for _, key := range keys {
+		switch key {
+		case "hostname":
+			primkeys = append(primkeys, "hostname")
+		case "type":
+			primkeys = append(primkeys, "type")
+		case "type-id":
+			primkeys = append(primkeys, "type-id")
+		}
+	}
+	return primkeys
+}
+
+func newCreateQuery(tablename string, keys []string, types []string, primkeys []string) string {
+
+	keytypelist := make([]string, 0)
+	for i, key := range keys {
+		keytypelist = append(keytypelist, fmt.Sprintf("%s %s", key, types[i]))
+	}
+	keytypelist = append(keytypelist, fmt.Sprintf("PRIMARY KEY (%s)", strings.Join(primkeys, ",")))
+	stmt := fmt.Sprintf("create table if not exists %s (%s);", tablename, keytypelist)
+	return stmt
+}
+
+func newInsertQuery(tablename string, keys []string) string {
+	v := strings.Repeat("?,", len(keys)) + "?"
+	stmt := fmt.Sprintf("insert into %s (%s) values(%s);", tablename, strings.Join(keys, ","), v)
+	return stmt
+}
+
+func (s *SqliteSink) Write(point lp.CCMetric) error {
+
+	if s.db != nil {
+		measurement := point.Name()
+		if tab, ok := s.tables[measurement]; !ok {
+			var tab SqliteTable
+			tab.columns = getkeylist(point, s.meta_as_tags)
+			tab.coltypes = gettypelist(point, tab.columns)
+			tab.primkeys = getprimkey(tab.columns)
+			tab.createQuery = newCreateQuery(measurement, tab.columns, tab.coltypes, tab.primkeys)
+			tab.insertQuery = newInsertQuery(measurement, tab.columns)
+
+			tx, err := s.db.Begin()
+			if err != nil {
+				cclog.ComponentError("SqliteSink", "Init DB session failed:", err.Error())
+				return err
+			}
+			_, err = tx.Exec(tab.createQuery)
+			if err != nil {
+				cclog.ComponentError("SqliteSink", "Execute CreateQuery failed:", err.Error())
+				return err
+			}
+			stmt, err := tx.Prepare(tab.insertQuery)
+			if err != nil {
+				cclog.ComponentError("SqliteSink", "Prepare InsertQuery failed:", err.Error())
+				return err
+			}
+			defer stmt.Close()
+			_, err = stmt.Exec(getvaluelist(point, tab.columns))
+			if err != nil {
+				cclog.ComponentError("SqliteSink", "Execute InsertQuery failed:", err.Error())
+				return err
+			}
+			tx.Commit()
+			s.tables[measurement] = tab
+
+		} else {
+
+			keys := getkeylist(point, s.meta_as_tags)
+			if len(keys) > len(tab.columns) {
+				cclog.ComponentDebug("SqliteSink", "Metric", measurement, "has different keys as creation keys, ignoring addition keys")
+			} else if len(keys) < len(tab.columns) {
+				cclog.ComponentDebug("SqliteSink", "Metric", measurement, "has different keys as creation keys, setting missing values with 'NULL'")
+			}
+			values := getvaluelist(point, tab.columns)
+			tx, err := s.db.Begin()
+			if err != nil {
+				cclog.ComponentError("SqliteSink", "Init DB session failed:", err.Error())
+				return err
+			}
+			stmt, err := tx.Prepare(tab.insertQuery)
+			if err != nil {
+				cclog.ComponentError("SqliteSink", "Prepare InsertQuery failed:", err.Error())
+				return err
+			}
+			defer stmt.Close()
+			_, err = stmt.Exec(values)
+			if err != nil {
+				cclog.ComponentError("SqliteSink", "Execute InsertQuery failed:", err.Error())
+				return err
+			}
+			tx.Commit()
+
+		}
 	}
 	return nil
 }
@@ -150,8 +249,8 @@ func (s *SqliteSink) Flush() error {
 }
 
 func (s *SqliteSink) Close() {
-    log.Print("Closing Sqlite3 database ", s.database)
-    if s.db != nil {
-    	s.db.Close()
-    }
+	log.Print("Closing Sqlite3 database ", s.database)
+	if s.db != nil {
+		s.db.Close()
+	}
 }