Add uint/bool support to cratedb output (#4117)

docker-compose.yml

@@ -83,6 +83,7 @@ services:
     ports:
       - "4200:4200"
       - "4230:4230"
+      - "5432:5432"
     command:
       - crate
       - -Cnetwork.host=0.0.0.0
@@ -90,4 +91,3 @@ services:
       - -Clicense.enterprise=false
     environment:
       - CRATE_HEAP_SIZE=128m
-    - JAVA_OPTS='-Xms256m -Xmx256m'

plugins/outputs/cratedb/cratedb.go

@@ -7,6 +7,7 @@ import (
 	"encoding/binary"
 	"fmt"
 	"sort"
+	"strconv"
 	"strings"
 	"time"
 
@@ -16,6 +17,8 @@ import (
 	_ "github.com/jackc/pgx/stdlib"
 )
 
+const MaxInt64 = int64(^uint64(0) >> 1)
+
 type CrateDB struct {
 	URL         string
 	Timeout     internal.Duration
@@ -115,11 +118,19 @@ func escapeValue(val interface{}) (string, error) {
 	switch t := val.(type) {
 	case string:
 		return escapeString(t, `'`), nil
-	// We don't handle uint, uint32 and uint64 here because CrateDB doesn't
-	// seem to support unsigned types. But it seems like input plugins don't
-	// produce those types, so it's hopefully ok.
-	case int, int32, int64, float32, float64:
+	case int64, float64:
 		return fmt.Sprint(t), nil
+	case uint64:
+		// The long type is the largest integer type in CrateDB and is the
+		// size of a signed int64.  If our value is too large send the largest
+		// possible value.
+		if t <= uint64(MaxInt64) {
+			return strconv.FormatInt(int64(t), 10), nil
+		} else {
+			return strconv.FormatInt(MaxInt64, 10), nil
+		}
+	case bool:
+		return strconv.FormatBool(t), nil
 	case time.Time:
 		// see https://crate.io/docs/crate/reference/sql/data_types.html#timestamp
 		return escapeValue(t.Format("2006-01-02T15:04:05.999-0700"))

plugins/outputs/cratedb/cratedb_test.go

@@ -111,12 +111,12 @@ func Test_escapeValue(t *testing.T) {
 		{`foo`, `'foo'`},
 		{`foo'bar 'yeah`, `'foo''bar ''yeah'`},
 		// int types
-		{123, `123`}, // int
 		{int64(123), `123`},
-		{int32(123), `123`},
+		{uint64(123), `123`},
+		{uint64(MaxInt64) + 1, `9223372036854775807`},
+		{true, `true`},
+		{false, `false`},
 		// float types
-		{123.456, `123.456`},
-		{float32(123.456), `123.456`}, // floating point SNAFU
 		{float64(123.456), `123.456`},
 		// time.Time
 		{time.Date(2017, 8, 7, 16, 44, 52, 123*1000*1000, time.FixedZone("Dreamland", 5400)), `'2017-08-07T16:44:52.123+0130'`},