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postgres: fix precision for time columns in time series query mode

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This commit is contained in:
Marcus Efraimsson 2018-04-10 11:03:58 +02:00
parent af62646624
commit 1783c534fd
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GPG Key ID: EBFE0FB04612DD4A
2 changed files with 229 additions and 27 deletions
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12
pkg/tsdb/postgres/postgres.go
View File

@ -7,7 +7,6 @@ import (
"math"
"net/url"
"strconv"
"time"
"github.com/go-xorm/core"
"github.com/grafana/grafana/pkg/components/null"
@ -219,13 +218,16 @@ func (e PostgresQueryEndpoint) transformToTimeSeries(query *tsdb.Query, rows *co
return err
}
// converts column named time to unix timestamp in milliseconds to make
// native mysql datetime types and epoch dates work in
// annotation and table queries.
tsdb.ConvertSqlTimeColumnToEpochMs(values, timeIndex)
switch columnValue := values[timeIndex].(type) {
case int64:
timestamp = float64(columnValue * 1000)
timestamp = float64(columnValue)
case float64:
timestamp = columnValue * 1000
case time.Time:
timestamp = float64(columnValue.UnixNano() / 1e6)
timestamp = columnValue
default:
return fmt.Errorf("Invalid type for column time, must be of type timestamp or unix timestamp, got: %T %v", columnValue, columnValue)
}

244
pkg/tsdb/postgres/postgres_test.go
View File

@ -156,8 +156,7 @@ func TestPostgres(t *testing.T) {
})
}
for _, s := range series {
_, err = sess.Insert(s)
_, err = sess.InsertMulti(series)
So(err, ShouldBeNil)
}
@ -280,10 +279,18 @@ func TestPostgres(t *testing.T) {
Convey("Given a table with metrics having multiple values and measurements", func() {
type metric_values struct {
Time time.Time
Measurement string
ValueOne int64 `xorm:"integer 'valueOne'"`
ValueTwo int64 `xorm:"integer 'valueTwo'"`
Time time.Time
TimeInt64 int64 `xorm:"bigint 'timeInt64' not null"`
TimeInt64Nullable *int64 `xorm:"bigint 'timeInt64Nullable' null"`
TimeFloat64 float64 `xorm:"double 'timeFloat64' not null"`
TimeFloat64Nullable *float64 `xorm:"double 'timeFloat64Nullable' null"`
TimeInt32 int32 `xorm:"int(11) 'timeInt32' not null"`
TimeInt32Nullable *int32 `xorm:"int(11) 'timeInt32Nullable' null"`
TimeFloat32 float32 `xorm:"double 'timeFloat32' not null"`
TimeFloat32Nullable *float32 `xorm:"double 'timeFloat32Nullable' null"`
Measurement string
ValueOne int64 `xorm:"integer 'valueOne'"`
ValueTwo int64 `xorm:"integer 'valueTwo'"`
}
if exist, err := sess.IsTableExist(metric_values{}); err != nil || exist {
@ -298,27 +305,220 @@ func TestPostgres(t *testing.T) {
return rand.Int63n(max-min) + min
}
var tInitial time.Time
series := []*metric_values{}
for _, t := range genTimeRangeByInterval(fromStart.Add(-30*time.Minute), 90*time.Minute, 5*time.Minute) {
series = append(series, &metric_values{
Time: t,
Measurement: "Metric A",
ValueOne: rnd(0, 100),
ValueTwo: rnd(0, 100),
})
series = append(series, &metric_values{
Time: t,
Measurement: "Metric B",
ValueOne: rnd(0, 100),
ValueTwo: rnd(0, 100),
})
for i, t := range genTimeRangeByInterval(fromStart.Add(-30*time.Minute), 90*time.Minute, 5*time.Minute) {
if i == 0 {
tInitial = t
}
tSeconds := t.Unix()
tSecondsInt32 := int32(tSeconds)
tSecondsFloat32 := float32(tSeconds)
tMilliseconds := tSeconds * 1e3
tMillisecondsFloat := float64(tMilliseconds)
first := metric_values{
Time: t,
TimeInt64: tMilliseconds,
TimeInt64Nullable: &(tMilliseconds),
TimeFloat64: tMillisecondsFloat,
TimeFloat64Nullable: &tMillisecondsFloat,
TimeInt32: tSecondsInt32,
TimeInt32Nullable: &tSecondsInt32,
TimeFloat32: tSecondsFloat32,
TimeFloat32Nullable: &tSecondsFloat32,
Measurement: "Metric A",
ValueOne: rnd(0, 100),
ValueTwo: rnd(0, 100),
}
second := first
second.Measurement = "Metric B"
second.ValueOne = rnd(0, 100)
second.ValueTwo = rnd(0, 100)
series = append(series, &first)
series = append(series, &second)
}
for _, s := range series {
_, err := sess.Insert(s)
_, err = sess.InsertMulti(series)
So(err, ShouldBeNil)
Convey("When doing a metric query using epoch (int64) as time column should return metric with time in milliseconds", func() {
query := &tsdb.TsdbQuery{
Queries: []*tsdb.Query{
{
Model: simplejson.NewFromAny(map[string]interface{}{
"rawSql": `SELECT "timeInt64" as time, "valueOne" FROM metric_values ORDER BY time LIMIT 1`,
"format": "time_series",
}),
RefId: "A",
},
},
}
resp, err := endpoint.Query(nil, nil, query)
So(err, ShouldBeNil)
queryResult := resp.Results["A"]
So(queryResult.Error, ShouldBeNil)
So(len(queryResult.Series), ShouldEqual, 1)
So(queryResult.Series[0].Points[0][1].Float64, ShouldEqual, float64(tInitial.UnixNano()/1e6))
})
Convey("When doing a metric query using epoch (int64 nullable) as time column should return metric with time in milliseconds", func() {
query := &tsdb.TsdbQuery{
Queries: []*tsdb.Query{
{
Model: simplejson.NewFromAny(map[string]interface{}{
"rawSql": `SELECT "timeInt64Nullable" as time, "valueOne" FROM metric_values ORDER BY time LIMIT 1`,
"format": "time_series",
}),
RefId: "A",
},
},
}
resp, err := endpoint.Query(nil, nil, query)
So(err, ShouldBeNil)
queryResult := resp.Results["A"]
So(queryResult.Error, ShouldBeNil)
So(len(queryResult.Series), ShouldEqual, 1)
So(queryResult.Series[0].Points[0][1].Float64, ShouldEqual, float64(tInitial.UnixNano()/1e6))
})
Convey("When doing a metric query using epoch (float64) as time column should return metric with time in milliseconds", func() {
query := &tsdb.TsdbQuery{
Queries: []*tsdb.Query{
{
Model: simplejson.NewFromAny(map[string]interface{}{
"rawSql": `SELECT "timeFloat64" as time, "valueOne" FROM metric_values ORDER BY time LIMIT 1`,
"format": "time_series",
}),
RefId: "A",
},
},
}
resp, err := endpoint.Query(nil, nil, query)
So(err, ShouldBeNil)
queryResult := resp.Results["A"]
So(queryResult.Error, ShouldBeNil)
So(len(queryResult.Series), ShouldEqual, 1)
So(queryResult.Series[0].Points[0][1].Float64, ShouldEqual, float64(tInitial.UnixNano()/1e6))
})
Convey("When doing a metric query using epoch (float64 nullable) as time column should return metric with time in milliseconds", func() {
query := &tsdb.TsdbQuery{
Queries: []*tsdb.Query{
{
Model: simplejson.NewFromAny(map[string]interface{}{
"rawSql": `SELECT "timeFloat64Nullable" as time, "valueOne" FROM metric_values ORDER BY time LIMIT 1`,
"format": "time_series",
}),
RefId: "A",
},
},
}
resp, err := endpoint.Query(nil, nil, query)
So(err, ShouldBeNil)
queryResult := resp.Results["A"]
So(queryResult.Error, ShouldBeNil)
So(len(queryResult.Series), ShouldEqual, 1)
So(queryResult.Series[0].Points[0][1].Float64, ShouldEqual, float64(tInitial.UnixNano()/1e6))
})
Convey("When doing a metric query using epoch (int32) as time column should return metric with time in milliseconds", func() {
query := &tsdb.TsdbQuery{
Queries: []*tsdb.Query{
{
Model: simplejson.NewFromAny(map[string]interface{}{
"rawSql": `SELECT "timeInt32" as time, "valueOne" FROM metric_values ORDER BY time LIMIT 1`,
"format": "time_series",
}),
RefId: "A",
},
},
}
resp, err := endpoint.Query(nil, nil, query)
So(err, ShouldBeNil)
queryResult := resp.Results["A"]
So(queryResult.Error, ShouldBeNil)
So(len(queryResult.Series), ShouldEqual, 1)
So(queryResult.Series[0].Points[0][1].Float64, ShouldEqual, float64(tInitial.UnixNano()/1e6))
})
Convey("When doing a metric query using epoch (int32 nullable) as time column should return metric with time in milliseconds", func() {
query := &tsdb.TsdbQuery{
Queries: []*tsdb.Query{
{
Model: simplejson.NewFromAny(map[string]interface{}{
"rawSql": `SELECT "timeInt32Nullable" as time, "valueOne" FROM metric_values ORDER BY time LIMIT 1`,
"format": "time_series",
}),
RefId: "A",
},
},
}
resp, err := endpoint.Query(nil, nil, query)
So(err, ShouldBeNil)
queryResult := resp.Results["A"]
So(queryResult.Error, ShouldBeNil)
So(len(queryResult.Series), ShouldEqual, 1)
So(queryResult.Series[0].Points[0][1].Float64, ShouldEqual, float64(tInitial.UnixNano()/1e6))
})
Convey("When doing a metric query using epoch (float32) as time column should return metric with time in milliseconds", func() {
query := &tsdb.TsdbQuery{
Queries: []*tsdb.Query{
{
Model: simplejson.NewFromAny(map[string]interface{}{
"rawSql": `SELECT "timeFloat32" as time, "valueOne" FROM metric_values ORDER BY time LIMIT 1`,
"format": "time_series",
}),
RefId: "A",
},
},
}
resp, err := endpoint.Query(nil, nil, query)
So(err, ShouldBeNil)
queryResult := resp.Results["A"]
So(queryResult.Error, ShouldBeNil)
So(len(queryResult.Series), ShouldEqual, 1)
So(queryResult.Series[0].Points[0][1].Float64, ShouldEqual, float64(float64(float32(tInitial.Unix())))*1e3)
})
Convey("When doing a metric query using epoch (float32 nullable) as time column should return metric with time in milliseconds", func() {
query := &tsdb.TsdbQuery{
Queries: []*tsdb.Query{
{
Model: simplejson.NewFromAny(map[string]interface{}{
"rawSql": `SELECT "timeFloat32Nullable" as time, "valueOne" FROM metric_values ORDER BY time LIMIT 1`,
"format": "time_series",
}),
RefId: "A",
},
},
}
resp, err := endpoint.Query(nil, nil, query)
So(err, ShouldBeNil)
queryResult := resp.Results["A"]
So(queryResult.Error, ShouldBeNil)
So(len(queryResult.Series), ShouldEqual, 1)
So(queryResult.Series[0].Points[0][1].Float64, ShouldEqual, float64(float64(float32(tInitial.Unix())))*1e3)
})
Convey("When doing a metric query grouping by time and select metric column should return correct series", func() {
query := &tsdb.TsdbQuery{
Queries: []*tsdb.Query{
@ -473,7 +673,7 @@ func TestPostgres(t *testing.T) {
columns := queryResult.Tables[0].Rows[0]
//Should be in milliseconds
So(columns[0].(float64), ShouldEqual, float64(dt.Unix()*1000))
So(columns[0].(float64), ShouldEqual, float64(dt.UnixNano()/1e6))
})
Convey("When doing an annotation query with a time column in epoch second format should return ms", func() {