/usr/share/gocode/src/github.com/influxdata/influxdb/influxql/iterator_test.go is in golang-github-influxdb-influxdb-dev 1.0.2+dfsg1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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import (
"bytes"
"fmt"
"math"
"math/rand"
"reflect"
"regexp"
"testing"
"time"
"github.com/davecgh/go-spew/spew"
"github.com/influxdata/influxdb/influxql"
"github.com/influxdata/influxdb/pkg/deep"
)
// Ensure that a set of iterators can be merged together, sorted by window and name/tag.
func TestMergeIterator_Float(t *testing.T) {
inputs := []*FloatIterator{
{Points: []influxql.FloatPoint{
{Name: "cpu", Tags: ParseTags("host=A"), Time: 0, Value: 1},
{Name: "cpu", Tags: ParseTags("host=A"), Time: 12, Value: 3},
{Name: "cpu", Tags: ParseTags("host=A"), Time: 30, Value: 4},
{Name: "cpu", Tags: ParseTags("host=B"), Time: 1, Value: 2},
{Name: "mem", Tags: ParseTags("host=B"), Time: 11, Value: 8},
}},
{Points: []influxql.FloatPoint{
{Name: "cpu", Tags: ParseTags("host=A"), Time: 20, Value: 7},
{Name: "cpu", Tags: ParseTags("host=B"), Time: 11, Value: 5},
{Name: "cpu", Tags: ParseTags("host=B"), Time: 13, Value: 6},
{Name: "mem", Tags: ParseTags("host=A"), Time: 25, Value: 9},
}},
{Points: []influxql.FloatPoint{}},
{Points: []influxql.FloatPoint{}},
}
itr := influxql.NewMergeIterator(FloatIterators(inputs), influxql.IteratorOptions{
Interval: influxql.Interval{
Duration: 10 * time.Nanosecond,
},
Ascending: true,
})
if a, err := Iterators([]influxql.Iterator{itr}).ReadAll(); err != nil {
t.Fatalf("unexpected error: %s", err)
} else if !deep.Equal(a, [][]influxql.Point{
{&influxql.FloatPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 0, Value: 1}},
{&influxql.FloatPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 12, Value: 3}},
{&influxql.FloatPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 20, Value: 7}},
{&influxql.FloatPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 30, Value: 4}},
{&influxql.FloatPoint{Name: "cpu", Tags: ParseTags("host=B"), Time: 1, Value: 2}},
{&influxql.FloatPoint{Name: "cpu", Tags: ParseTags("host=B"), Time: 11, Value: 5}},
{&influxql.FloatPoint{Name: "cpu", Tags: ParseTags("host=B"), Time: 13, Value: 6}},
{&influxql.FloatPoint{Name: "mem", Tags: ParseTags("host=A"), Time: 25, Value: 9}},
{&influxql.FloatPoint{Name: "mem", Tags: ParseTags("host=B"), Time: 11, Value: 8}},
}) {
t.Errorf("unexpected points: %s", spew.Sdump(a))
}
for i, input := range inputs {
if !input.Closed {
t.Errorf("iterator %d not closed", i)
}
}
}
// Ensure that a set of iterators can be merged together, sorted by window and name/tag.
func TestMergeIterator_Integer(t *testing.T) {
inputs := []*IntegerIterator{
{Points: []influxql.IntegerPoint{
{Name: "cpu", Tags: ParseTags("host=A"), Time: 0, Value: 1},
{Name: "cpu", Tags: ParseTags("host=A"), Time: 12, Value: 3},
{Name: "cpu", Tags: ParseTags("host=A"), Time: 30, Value: 4},
{Name: "cpu", Tags: ParseTags("host=B"), Time: 1, Value: 2},
{Name: "mem", Tags: ParseTags("host=B"), Time: 11, Value: 8},
}},
{Points: []influxql.IntegerPoint{
{Name: "cpu", Tags: ParseTags("host=A"), Time: 20, Value: 7},
{Name: "cpu", Tags: ParseTags("host=B"), Time: 11, Value: 5},
{Name: "cpu", Tags: ParseTags("host=B"), Time: 13, Value: 6},
{Name: "mem", Tags: ParseTags("host=A"), Time: 25, Value: 9},
}},
{Points: []influxql.IntegerPoint{}},
}
itr := influxql.NewMergeIterator(IntegerIterators(inputs), influxql.IteratorOptions{
Interval: influxql.Interval{
Duration: 10 * time.Nanosecond,
},
Ascending: true,
})
if a, err := Iterators([]influxql.Iterator{itr}).ReadAll(); err != nil {
t.Fatalf("unexpected error: %s", err)
} else if !deep.Equal(a, [][]influxql.Point{
{&influxql.IntegerPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 0, Value: 1}},
{&influxql.IntegerPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 12, Value: 3}},
{&influxql.IntegerPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 20, Value: 7}},
{&influxql.IntegerPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 30, Value: 4}},
{&influxql.IntegerPoint{Name: "cpu", Tags: ParseTags("host=B"), Time: 1, Value: 2}},
{&influxql.IntegerPoint{Name: "cpu", Tags: ParseTags("host=B"), Time: 11, Value: 5}},
{&influxql.IntegerPoint{Name: "cpu", Tags: ParseTags("host=B"), Time: 13, Value: 6}},
{&influxql.IntegerPoint{Name: "mem", Tags: ParseTags("host=A"), Time: 25, Value: 9}},
{&influxql.IntegerPoint{Name: "mem", Tags: ParseTags("host=B"), Time: 11, Value: 8}},
}) {
t.Errorf("unexpected points: %s", spew.Sdump(a))
}
for i, input := range inputs {
if !input.Closed {
t.Errorf("iterator %d not closed", i)
}
}
}
// Ensure that a set of iterators can be merged together, sorted by window and name/tag.
func TestMergeIterator_String(t *testing.T) {
inputs := []*StringIterator{
{Points: []influxql.StringPoint{
{Name: "cpu", Tags: ParseTags("host=A"), Time: 0, Value: "a"},
{Name: "cpu", Tags: ParseTags("host=A"), Time: 12, Value: "c"},
{Name: "cpu", Tags: ParseTags("host=A"), Time: 30, Value: "d"},
{Name: "cpu", Tags: ParseTags("host=B"), Time: 1, Value: "b"},
{Name: "mem", Tags: ParseTags("host=B"), Time: 11, Value: "h"},
}},
{Points: []influxql.StringPoint{
{Name: "cpu", Tags: ParseTags("host=A"), Time: 20, Value: "g"},
{Name: "cpu", Tags: ParseTags("host=B"), Time: 11, Value: "e"},
{Name: "cpu", Tags: ParseTags("host=B"), Time: 13, Value: "f"},
{Name: "mem", Tags: ParseTags("host=A"), Time: 25, Value: "i"},
}},
{Points: []influxql.StringPoint{}},
}
itr := influxql.NewMergeIterator(StringIterators(inputs), influxql.IteratorOptions{
Interval: influxql.Interval{
Duration: 10 * time.Nanosecond,
},
Ascending: true,
})
if a, err := Iterators([]influxql.Iterator{itr}).ReadAll(); err != nil {
t.Fatalf("unexpected error: %s", err)
} else if !deep.Equal(a, [][]influxql.Point{
{&influxql.StringPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 0, Value: "a"}},
{&influxql.StringPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 12, Value: "c"}},
{&influxql.StringPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 20, Value: "g"}},
{&influxql.StringPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 30, Value: "d"}},
{&influxql.StringPoint{Name: "cpu", Tags: ParseTags("host=B"), Time: 1, Value: "b"}},
{&influxql.StringPoint{Name: "cpu", Tags: ParseTags("host=B"), Time: 11, Value: "e"}},
{&influxql.StringPoint{Name: "cpu", Tags: ParseTags("host=B"), Time: 13, Value: "f"}},
{&influxql.StringPoint{Name: "mem", Tags: ParseTags("host=A"), Time: 25, Value: "i"}},
{&influxql.StringPoint{Name: "mem", Tags: ParseTags("host=B"), Time: 11, Value: "h"}},
}) {
t.Errorf("unexpected points: %s", spew.Sdump(a))
}
for i, input := range inputs {
if !input.Closed {
t.Errorf("iterator %d not closed", i)
}
}
}
// Ensure that a set of iterators can be merged together, sorted by window and name/tag.
func TestMergeIterator_Boolean(t *testing.T) {
inputs := []*BooleanIterator{
{Points: []influxql.BooleanPoint{
{Name: "cpu", Tags: ParseTags("host=A"), Time: 0, Value: true},
{Name: "cpu", Tags: ParseTags("host=A"), Time: 12, Value: true},
{Name: "cpu", Tags: ParseTags("host=A"), Time: 30, Value: false},
{Name: "cpu", Tags: ParseTags("host=B"), Time: 1, Value: false},
{Name: "mem", Tags: ParseTags("host=B"), Time: 11, Value: true},
}},
{Points: []influxql.BooleanPoint{
{Name: "cpu", Tags: ParseTags("host=A"), Time: 20, Value: true},
{Name: "cpu", Tags: ParseTags("host=B"), Time: 11, Value: true},
{Name: "cpu", Tags: ParseTags("host=B"), Time: 13, Value: false},
{Name: "mem", Tags: ParseTags("host=A"), Time: 25, Value: false},
}},
{Points: []influxql.BooleanPoint{}},
}
itr := influxql.NewMergeIterator(BooleanIterators(inputs), influxql.IteratorOptions{
Interval: influxql.Interval{
Duration: 10 * time.Nanosecond,
},
Ascending: true,
})
if a, err := Iterators([]influxql.Iterator{itr}).ReadAll(); err != nil {
t.Fatalf("unexpected error: %s", err)
} else if !deep.Equal(a, [][]influxql.Point{
{&influxql.BooleanPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 0, Value: true}},
{&influxql.BooleanPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 12, Value: true}},
{&influxql.BooleanPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 20, Value: true}},
{&influxql.BooleanPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 30, Value: false}},
{&influxql.BooleanPoint{Name: "cpu", Tags: ParseTags("host=B"), Time: 1, Value: false}},
{&influxql.BooleanPoint{Name: "cpu", Tags: ParseTags("host=B"), Time: 11, Value: true}},
{&influxql.BooleanPoint{Name: "cpu", Tags: ParseTags("host=B"), Time: 13, Value: false}},
{&influxql.BooleanPoint{Name: "mem", Tags: ParseTags("host=A"), Time: 25, Value: false}},
{&influxql.BooleanPoint{Name: "mem", Tags: ParseTags("host=B"), Time: 11, Value: true}},
}) {
t.Errorf("unexpected points: %s", spew.Sdump(a))
}
for i, input := range inputs {
if !input.Closed {
t.Errorf("iterator %d not closed", i)
}
}
}
func TestMergeIterator_Nil(t *testing.T) {
itr := influxql.NewMergeIterator([]influxql.Iterator{nil}, influxql.IteratorOptions{})
if itr != nil {
t.Fatalf("unexpected iterator: %#v", itr)
}
}
func TestMergeIterator_Cast_Float(t *testing.T) {
inputs := []influxql.Iterator{
&IntegerIterator{Points: []influxql.IntegerPoint{
{Name: "cpu", Tags: ParseTags("host=A"), Time: 0, Value: 1},
{Name: "cpu", Tags: ParseTags("host=A"), Time: 12, Value: 3},
{Name: "cpu", Tags: ParseTags("host=A"), Time: 30, Value: 4},
{Name: "cpu", Tags: ParseTags("host=B"), Time: 1, Value: 2},
{Name: "mem", Tags: ParseTags("host=B"), Time: 11, Value: 8},
}},
&FloatIterator{Points: []influxql.FloatPoint{
{Name: "cpu", Tags: ParseTags("host=A"), Time: 20, Value: 7},
{Name: "cpu", Tags: ParseTags("host=B"), Time: 11, Value: 5},
{Name: "cpu", Tags: ParseTags("host=B"), Time: 13, Value: 6},
{Name: "mem", Tags: ParseTags("host=A"), Time: 25, Value: 9},
}},
}
itr := influxql.NewMergeIterator(inputs, influxql.IteratorOptions{
Interval: influxql.Interval{
Duration: 10 * time.Nanosecond,
},
Ascending: true,
})
if a, err := Iterators([]influxql.Iterator{itr}).ReadAll(); err != nil {
t.Fatalf("unexpected error: %s", err)
} else if !deep.Equal(a, [][]influxql.Point{
{&influxql.FloatPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 0, Value: 1}},
{&influxql.FloatPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 12, Value: 3}},
{&influxql.FloatPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 20, Value: 7}},
{&influxql.FloatPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 30, Value: 4}},
{&influxql.FloatPoint{Name: "cpu", Tags: ParseTags("host=B"), Time: 1, Value: 2}},
{&influxql.FloatPoint{Name: "cpu", Tags: ParseTags("host=B"), Time: 11, Value: 5}},
{&influxql.FloatPoint{Name: "cpu", Tags: ParseTags("host=B"), Time: 13, Value: 6}},
{&influxql.FloatPoint{Name: "mem", Tags: ParseTags("host=A"), Time: 25, Value: 9}},
{&influxql.FloatPoint{Name: "mem", Tags: ParseTags("host=B"), Time: 11, Value: 8}},
}) {
t.Errorf("unexpected points: %s", spew.Sdump(a))
}
for i, input := range inputs {
switch input := input.(type) {
case *FloatIterator:
if !input.Closed {
t.Errorf("iterator %d not closed", i)
}
case *IntegerIterator:
if !input.Closed {
t.Errorf("iterator %d not closed", i)
}
}
}
}
// Ensure that a set of iterators can be merged together, sorted by name/tag.
func TestSortedMergeIterator_Float(t *testing.T) {
inputs := []*FloatIterator{
{Points: []influxql.FloatPoint{
{Name: "cpu", Tags: ParseTags("host=A"), Time: 0, Value: 1},
{Name: "cpu", Tags: ParseTags("host=A"), Time: 12, Value: 3},
{Name: "cpu", Tags: ParseTags("host=A"), Time: 30, Value: 4},
{Name: "cpu", Tags: ParseTags("host=B"), Time: 1, Value: 2},
{Name: "mem", Tags: ParseTags("host=B"), Time: 4, Value: 8},
}},
{Points: []influxql.FloatPoint{
{Name: "cpu", Tags: ParseTags("host=A"), Time: 20, Value: 7},
{Name: "cpu", Tags: ParseTags("host=B"), Time: 11, Value: 5},
{Name: "cpu", Tags: ParseTags("host=B"), Time: 13, Value: 6},
{Name: "mem", Tags: ParseTags("host=A"), Time: 25, Value: 9},
}},
{Points: []influxql.FloatPoint{}},
}
itr := influxql.NewSortedMergeIterator(FloatIterators(inputs), influxql.IteratorOptions{
Interval: influxql.Interval{
Duration: 10 * time.Nanosecond,
},
Ascending: true,
})
if a, err := Iterators([]influxql.Iterator{itr}).ReadAll(); err != nil {
t.Fatalf("unexpected error: %s", err)
} else if !deep.Equal(a, [][]influxql.Point{
{&influxql.FloatPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 0, Value: 1}},
{&influxql.FloatPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 12, Value: 3}},
{&influxql.FloatPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 20, Value: 7}},
{&influxql.FloatPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 30, Value: 4}},
{&influxql.FloatPoint{Name: "cpu", Tags: ParseTags("host=B"), Time: 1, Value: 2}},
{&influxql.FloatPoint{Name: "cpu", Tags: ParseTags("host=B"), Time: 11, Value: 5}},
{&influxql.FloatPoint{Name: "cpu", Tags: ParseTags("host=B"), Time: 13, Value: 6}},
{&influxql.FloatPoint{Name: "mem", Tags: ParseTags("host=A"), Time: 25, Value: 9}},
{&influxql.FloatPoint{Name: "mem", Tags: ParseTags("host=B"), Time: 4, Value: 8}},
}) {
t.Errorf("unexpected points: %s", spew.Sdump(a))
}
for i, input := range inputs {
if !input.Closed {
t.Errorf("iterator %d not closed", i)
}
}
}
// Ensure that a set of iterators can be merged together, sorted by name/tag.
func TestSortedMergeIterator_Integer(t *testing.T) {
inputs := []*IntegerIterator{
{Points: []influxql.IntegerPoint{
{Name: "cpu", Tags: ParseTags("host=A"), Time: 0, Value: 1},
{Name: "cpu", Tags: ParseTags("host=A"), Time: 12, Value: 3},
{Name: "cpu", Tags: ParseTags("host=A"), Time: 30, Value: 4},
{Name: "cpu", Tags: ParseTags("host=B"), Time: 1, Value: 2},
{Name: "mem", Tags: ParseTags("host=B"), Time: 4, Value: 8},
}},
{Points: []influxql.IntegerPoint{
{Name: "cpu", Tags: ParseTags("host=A"), Time: 20, Value: 7},
{Name: "cpu", Tags: ParseTags("host=B"), Time: 11, Value: 5},
{Name: "cpu", Tags: ParseTags("host=B"), Time: 13, Value: 6},
{Name: "mem", Tags: ParseTags("host=A"), Time: 25, Value: 9},
}},
{Points: []influxql.IntegerPoint{}},
}
itr := influxql.NewSortedMergeIterator(IntegerIterators(inputs), influxql.IteratorOptions{
Interval: influxql.Interval{
Duration: 10 * time.Nanosecond,
},
Ascending: true,
})
if a, err := Iterators([]influxql.Iterator{itr}).ReadAll(); err != nil {
t.Fatalf("unexpected error: %s", err)
} else if !deep.Equal(a, [][]influxql.Point{
{&influxql.IntegerPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 0, Value: 1}},
{&influxql.IntegerPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 12, Value: 3}},
{&influxql.IntegerPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 20, Value: 7}},
{&influxql.IntegerPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 30, Value: 4}},
{&influxql.IntegerPoint{Name: "cpu", Tags: ParseTags("host=B"), Time: 1, Value: 2}},
{&influxql.IntegerPoint{Name: "cpu", Tags: ParseTags("host=B"), Time: 11, Value: 5}},
{&influxql.IntegerPoint{Name: "cpu", Tags: ParseTags("host=B"), Time: 13, Value: 6}},
{&influxql.IntegerPoint{Name: "mem", Tags: ParseTags("host=A"), Time: 25, Value: 9}},
{&influxql.IntegerPoint{Name: "mem", Tags: ParseTags("host=B"), Time: 4, Value: 8}},
}) {
t.Errorf("unexpected points: %s", spew.Sdump(a))
}
for i, input := range inputs {
if !input.Closed {
t.Errorf("iterator %d not closed", i)
}
}
}
// Ensure that a set of iterators can be merged together, sorted by name/tag.
func TestSortedMergeIterator_String(t *testing.T) {
inputs := []*StringIterator{
{Points: []influxql.StringPoint{
{Name: "cpu", Tags: ParseTags("host=A"), Time: 0, Value: "a"},
{Name: "cpu", Tags: ParseTags("host=A"), Time: 12, Value: "c"},
{Name: "cpu", Tags: ParseTags("host=A"), Time: 30, Value: "d"},
{Name: "cpu", Tags: ParseTags("host=B"), Time: 1, Value: "b"},
{Name: "mem", Tags: ParseTags("host=B"), Time: 4, Value: "h"},
}},
{Points: []influxql.StringPoint{
{Name: "cpu", Tags: ParseTags("host=A"), Time: 20, Value: "g"},
{Name: "cpu", Tags: ParseTags("host=B"), Time: 11, Value: "e"},
{Name: "cpu", Tags: ParseTags("host=B"), Time: 13, Value: "f"},
{Name: "mem", Tags: ParseTags("host=A"), Time: 25, Value: "i"},
}},
{Points: []influxql.StringPoint{}},
}
itr := influxql.NewSortedMergeIterator(StringIterators(inputs), influxql.IteratorOptions{
Interval: influxql.Interval{
Duration: 10 * time.Nanosecond,
},
Ascending: true,
})
if a, err := Iterators([]influxql.Iterator{itr}).ReadAll(); err != nil {
t.Fatalf("unexpected error: %s", err)
} else if !deep.Equal(a, [][]influxql.Point{
{&influxql.StringPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 0, Value: "a"}},
{&influxql.StringPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 12, Value: "c"}},
{&influxql.StringPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 20, Value: "g"}},
{&influxql.StringPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 30, Value: "d"}},
{&influxql.StringPoint{Name: "cpu", Tags: ParseTags("host=B"), Time: 1, Value: "b"}},
{&influxql.StringPoint{Name: "cpu", Tags: ParseTags("host=B"), Time: 11, Value: "e"}},
{&influxql.StringPoint{Name: "cpu", Tags: ParseTags("host=B"), Time: 13, Value: "f"}},
{&influxql.StringPoint{Name: "mem", Tags: ParseTags("host=A"), Time: 25, Value: "i"}},
{&influxql.StringPoint{Name: "mem", Tags: ParseTags("host=B"), Time: 4, Value: "h"}},
}) {
t.Errorf("unexpected points: %s", spew.Sdump(a))
}
for i, input := range inputs {
if !input.Closed {
t.Errorf("iterator %d not closed", i)
}
}
}
// Ensure that a set of iterators can be merged together, sorted by name/tag.
func TestSortedMergeIterator_Boolean(t *testing.T) {
inputs := []*BooleanIterator{
{Points: []influxql.BooleanPoint{
{Name: "cpu", Tags: ParseTags("host=A"), Time: 0, Value: true},
{Name: "cpu", Tags: ParseTags("host=A"), Time: 12, Value: true},
{Name: "cpu", Tags: ParseTags("host=A"), Time: 30, Value: false},
{Name: "cpu", Tags: ParseTags("host=B"), Time: 1, Value: false},
{Name: "mem", Tags: ParseTags("host=B"), Time: 4, Value: true},
}},
{Points: []influxql.BooleanPoint{
{Name: "cpu", Tags: ParseTags("host=A"), Time: 20, Value: true},
{Name: "cpu", Tags: ParseTags("host=B"), Time: 11, Value: true},
{Name: "cpu", Tags: ParseTags("host=B"), Time: 13, Value: false},
{Name: "mem", Tags: ParseTags("host=A"), Time: 25, Value: true},
}},
{Points: []influxql.BooleanPoint{}},
}
itr := influxql.NewSortedMergeIterator(BooleanIterators(inputs), influxql.IteratorOptions{
Interval: influxql.Interval{
Duration: 10 * time.Nanosecond,
},
Ascending: true,
})
if a, err := Iterators([]influxql.Iterator{itr}).ReadAll(); err != nil {
t.Fatalf("unexpected error: %s", err)
} else if !deep.Equal(a, [][]influxql.Point{
{&influxql.BooleanPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 0, Value: true}},
{&influxql.BooleanPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 12, Value: true}},
{&influxql.BooleanPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 20, Value: true}},
{&influxql.BooleanPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 30, Value: false}},
{&influxql.BooleanPoint{Name: "cpu", Tags: ParseTags("host=B"), Time: 1, Value: false}},
{&influxql.BooleanPoint{Name: "cpu", Tags: ParseTags("host=B"), Time: 11, Value: true}},
{&influxql.BooleanPoint{Name: "cpu", Tags: ParseTags("host=B"), Time: 13, Value: false}},
{&influxql.BooleanPoint{Name: "mem", Tags: ParseTags("host=A"), Time: 25, Value: true}},
{&influxql.BooleanPoint{Name: "mem", Tags: ParseTags("host=B"), Time: 4, Value: true}},
}) {
t.Errorf("unexpected points: %s", spew.Sdump(a))
}
for i, input := range inputs {
if !input.Closed {
t.Errorf("iterator %d not closed", i)
}
}
}
func TestSortedMergeIterator_Nil(t *testing.T) {
itr := influxql.NewSortedMergeIterator([]influxql.Iterator{nil}, influxql.IteratorOptions{})
if itr != nil {
t.Fatalf("unexpected iterator: %#v", itr)
}
}
func TestSortedMergeIterator_Cast_Float(t *testing.T) {
inputs := []influxql.Iterator{
&IntegerIterator{Points: []influxql.IntegerPoint{
{Name: "cpu", Tags: ParseTags("host=A"), Time: 0, Value: 1},
{Name: "cpu", Tags: ParseTags("host=A"), Time: 12, Value: 3},
{Name: "cpu", Tags: ParseTags("host=A"), Time: 30, Value: 4},
{Name: "cpu", Tags: ParseTags("host=B"), Time: 1, Value: 2},
{Name: "mem", Tags: ParseTags("host=B"), Time: 4, Value: 8},
}},
&FloatIterator{Points: []influxql.FloatPoint{
{Name: "cpu", Tags: ParseTags("host=A"), Time: 20, Value: 7},
{Name: "cpu", Tags: ParseTags("host=B"), Time: 11, Value: 5},
{Name: "cpu", Tags: ParseTags("host=B"), Time: 13, Value: 6},
{Name: "mem", Tags: ParseTags("host=A"), Time: 25, Value: 9},
}},
}
itr := influxql.NewSortedMergeIterator(inputs, influxql.IteratorOptions{
Interval: influxql.Interval{
Duration: 10 * time.Nanosecond,
},
Ascending: true,
})
if a, err := Iterators([]influxql.Iterator{itr}).ReadAll(); err != nil {
t.Fatalf("unexpected error: %s", err)
} else if !deep.Equal(a, [][]influxql.Point{
{&influxql.FloatPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 0, Value: 1}},
{&influxql.FloatPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 12, Value: 3}},
{&influxql.FloatPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 20, Value: 7}},
{&influxql.FloatPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 30, Value: 4}},
{&influxql.FloatPoint{Name: "cpu", Tags: ParseTags("host=B"), Time: 1, Value: 2}},
{&influxql.FloatPoint{Name: "cpu", Tags: ParseTags("host=B"), Time: 11, Value: 5}},
{&influxql.FloatPoint{Name: "cpu", Tags: ParseTags("host=B"), Time: 13, Value: 6}},
{&influxql.FloatPoint{Name: "mem", Tags: ParseTags("host=A"), Time: 25, Value: 9}},
{&influxql.FloatPoint{Name: "mem", Tags: ParseTags("host=B"), Time: 4, Value: 8}},
}) {
t.Errorf("unexpected points: %s", spew.Sdump(a))
}
for i, input := range inputs {
switch input := input.(type) {
case *FloatIterator:
if !input.Closed {
t.Errorf("iterator %d not closed", i)
}
case *IntegerIterator:
if !input.Closed {
t.Errorf("iterator %d not closed", i)
}
}
}
}
// Ensure limit iterators work with limit and offset.
func TestLimitIterator_Float(t *testing.T) {
input := &FloatIterator{Points: []influxql.FloatPoint{
{Name: "cpu", Time: 0, Value: 1},
{Name: "cpu", Time: 5, Value: 3},
{Name: "cpu", Time: 10, Value: 5},
{Name: "mem", Time: 5, Value: 3},
{Name: "mem", Time: 7, Value: 8},
}}
itr := influxql.NewLimitIterator(input, influxql.IteratorOptions{
Limit: 1,
Offset: 1,
})
if a, err := Iterators([]influxql.Iterator{itr}).ReadAll(); err != nil {
t.Fatalf("unexpected error: %s", err)
} else if !deep.Equal(a, [][]influxql.Point{
{&influxql.FloatPoint{Name: "cpu", Time: 5, Value: 3}},
{&influxql.FloatPoint{Name: "mem", Time: 7, Value: 8}},
}) {
t.Fatalf("unexpected points: %s", spew.Sdump(a))
}
if !input.Closed {
t.Error("iterator not closed")
}
}
// Ensure limit iterators work with limit and offset.
func TestLimitIterator_Integer(t *testing.T) {
input := &IntegerIterator{Points: []influxql.IntegerPoint{
{Name: "cpu", Time: 0, Value: 1},
{Name: "cpu", Time: 5, Value: 3},
{Name: "cpu", Time: 10, Value: 5},
{Name: "mem", Time: 5, Value: 3},
{Name: "mem", Time: 7, Value: 8},
}}
itr := influxql.NewLimitIterator(input, influxql.IteratorOptions{
Limit: 1,
Offset: 1,
})
if a, err := Iterators([]influxql.Iterator{itr}).ReadAll(); err != nil {
t.Fatalf("unexpected error: %s", err)
} else if !deep.Equal(a, [][]influxql.Point{
{&influxql.IntegerPoint{Name: "cpu", Time: 5, Value: 3}},
{&influxql.IntegerPoint{Name: "mem", Time: 7, Value: 8}},
}) {
t.Fatalf("unexpected points: %s", spew.Sdump(a))
}
if !input.Closed {
t.Error("iterator not closed")
}
}
// Ensure limit iterators work with limit and offset.
func TestLimitIterator_String(t *testing.T) {
input := &StringIterator{Points: []influxql.StringPoint{
{Name: "cpu", Time: 0, Value: "a"},
{Name: "cpu", Time: 5, Value: "b"},
{Name: "cpu", Time: 10, Value: "c"},
{Name: "mem", Time: 5, Value: "d"},
{Name: "mem", Time: 7, Value: "e"},
}}
itr := influxql.NewLimitIterator(input, influxql.IteratorOptions{
Limit: 1,
Offset: 1,
})
if a, err := Iterators([]influxql.Iterator{itr}).ReadAll(); err != nil {
t.Fatalf("unexpected error: %s", err)
} else if !deep.Equal(a, [][]influxql.Point{
{&influxql.StringPoint{Name: "cpu", Time: 5, Value: "b"}},
{&influxql.StringPoint{Name: "mem", Time: 7, Value: "e"}},
}) {
t.Fatalf("unexpected points: %s", spew.Sdump(a))
}
if !input.Closed {
t.Error("iterator not closed")
}
}
// Ensure limit iterators work with limit and offset.
func TestLimitIterator_Boolean(t *testing.T) {
input := &BooleanIterator{Points: []influxql.BooleanPoint{
{Name: "cpu", Time: 0, Value: true},
{Name: "cpu", Time: 5, Value: false},
{Name: "cpu", Time: 10, Value: true},
{Name: "mem", Time: 5, Value: false},
{Name: "mem", Time: 7, Value: true},
}}
itr := influxql.NewLimitIterator(input, influxql.IteratorOptions{
Limit: 1,
Offset: 1,
})
if a, err := Iterators([]influxql.Iterator{itr}).ReadAll(); err != nil {
t.Fatalf("unexpected error: %s", err)
} else if !deep.Equal(a, [][]influxql.Point{
{&influxql.BooleanPoint{Name: "cpu", Time: 5, Value: false}},
{&influxql.BooleanPoint{Name: "mem", Time: 7, Value: true}},
}) {
t.Fatalf("unexpected points: %s", spew.Sdump(a))
}
if !input.Closed {
t.Error("iterator not closed")
}
}
// Ensure auxilary iterators can be created for auxilary fields.
func TestFloatAuxIterator(t *testing.T) {
itr := influxql.NewAuxIterator(
&FloatIterator{Points: []influxql.FloatPoint{
{Time: 0, Value: 1, Aux: []interface{}{float64(100), float64(200)}},
{Time: 1, Value: 2, Aux: []interface{}{float64(500), math.NaN()}},
}},
influxql.IteratorOptions{Aux: []influxql.VarRef{{Val: "f0", Type: influxql.Float}, {Val: "f1", Type: influxql.Float}}},
)
itrs := []influxql.Iterator{
itr,
itr.Iterator("f0", influxql.Unknown),
itr.Iterator("f1", influxql.Unknown),
itr.Iterator("f0", influxql.Unknown),
}
itr.Start()
if a, err := Iterators(itrs).ReadAll(); err != nil {
t.Fatalf("unexpected error: %s", err)
} else if !deep.Equal(a, [][]influxql.Point{
{
&influxql.FloatPoint{Time: 0, Value: 1, Aux: []interface{}{float64(100), float64(200)}},
&influxql.FloatPoint{Time: 0, Value: float64(100)},
&influxql.FloatPoint{Time: 0, Value: float64(200)},
&influxql.FloatPoint{Time: 0, Value: float64(100)},
},
{
&influxql.FloatPoint{Time: 1, Value: 2, Aux: []interface{}{float64(500), math.NaN()}},
&influxql.FloatPoint{Time: 1, Value: float64(500)},
&influxql.FloatPoint{Time: 1, Value: math.NaN()},
&influxql.FloatPoint{Time: 1, Value: float64(500)},
},
}) {
t.Fatalf("unexpected points: %s", spew.Sdump(a))
}
}
// Ensure limit iterator returns a subset of points.
func TestLimitIterator(t *testing.T) {
itr := influxql.NewLimitIterator(
&FloatIterator{Points: []influxql.FloatPoint{
{Time: 0, Value: 0},
{Time: 1, Value: 1},
{Time: 2, Value: 2},
{Time: 3, Value: 3},
}},
influxql.IteratorOptions{
Limit: 2,
Offset: 1,
StartTime: influxql.MinTime,
EndTime: influxql.MaxTime,
},
)
if a, err := (Iterators{itr}).ReadAll(); err != nil {
t.Fatalf("unexpected error: %s", err)
} else if !deep.Equal(a, [][]influxql.Point{
{&influxql.FloatPoint{Time: 1, Value: 1}},
{&influxql.FloatPoint{Time: 2, Value: 2}},
}) {
t.Fatalf("unexpected points: %s", spew.Sdump(a))
}
}
// Iterators is a test wrapper for iterators.
type Iterators []influxql.Iterator
// Next returns the next value from each iterator.
// Returns nil if any iterator returns a nil.
func (itrs Iterators) Next() ([]influxql.Point, error) {
a := make([]influxql.Point, len(itrs))
for i, itr := range itrs {
switch itr := itr.(type) {
case influxql.FloatIterator:
fp, err := itr.Next()
if fp == nil || err != nil {
return nil, err
}
a[i] = fp
case influxql.IntegerIterator:
ip, err := itr.Next()
if ip == nil || err != nil {
return nil, err
}
a[i] = ip
case influxql.StringIterator:
sp, err := itr.Next()
if sp == nil || err != nil {
return nil, err
}
a[i] = sp
case influxql.BooleanIterator:
bp, err := itr.Next()
if bp == nil || err != nil {
return nil, err
}
a[i] = bp
default:
panic(fmt.Sprintf("iterator type not supported: %T", itr))
}
}
return a, nil
}
// ReadAll reads all points from all iterators.
func (itrs Iterators) ReadAll() ([][]influxql.Point, error) {
var a [][]influxql.Point
// Read from every iterator until a nil is encountered.
for {
points, err := itrs.Next()
if err != nil {
return nil, err
} else if points == nil {
break
}
a = append(a, influxql.Points(points).Clone())
}
// Close all iterators.
influxql.Iterators(itrs).Close()
return a, nil
}
func TestIteratorOptions_Window_Interval(t *testing.T) {
opt := influxql.IteratorOptions{
Interval: influxql.Interval{
Duration: 10,
},
}
start, end := opt.Window(4)
if start != 0 {
t.Errorf("expected start to be 0, got %d", start)
}
if end != 10 {
t.Errorf("expected end to be 10, got %d", end)
}
}
func TestIteratorOptions_Window_Offset(t *testing.T) {
opt := influxql.IteratorOptions{
Interval: influxql.Interval{
Duration: 10,
Offset: 8,
},
}
start, end := opt.Window(14)
if start != 8 {
t.Errorf("expected start to be 8, got %d", start)
}
if end != 18 {
t.Errorf("expected end to be 18, got %d", end)
}
}
func TestIteratorOptions_Window_Default(t *testing.T) {
opt := influxql.IteratorOptions{
StartTime: 0,
EndTime: 60,
}
start, end := opt.Window(34)
if start != 0 {
t.Errorf("expected start to be 0, got %d", start)
}
if end != 61 {
t.Errorf("expected end to be 61, got %d", end)
}
}
func TestIteratorOptions_SeekTime_Ascending(t *testing.T) {
opt := influxql.IteratorOptions{
StartTime: 30,
EndTime: 60,
Ascending: true,
}
time := opt.SeekTime()
if time != 30 {
t.Errorf("expected time to be 30, got %d", time)
}
}
func TestIteratorOptions_SeekTime_Descending(t *testing.T) {
opt := influxql.IteratorOptions{
StartTime: 30,
EndTime: 60,
Ascending: false,
}
time := opt.SeekTime()
if time != 60 {
t.Errorf("expected time to be 60, got %d", time)
}
}
func TestIteratorOptions_MergeSorted(t *testing.T) {
opt := influxql.IteratorOptions{}
sorted := opt.MergeSorted()
if !sorted {
t.Error("expected no expression to be sorted, got unsorted")
}
opt.Expr = &influxql.VarRef{}
sorted = opt.MergeSorted()
if !sorted {
t.Error("expected expression with varref to be sorted, got unsorted")
}
opt.Expr = &influxql.Call{}
sorted = opt.MergeSorted()
if sorted {
t.Error("expected expression without varref to be unsorted, got sorted")
}
}
func TestIteratorOptions_DerivativeInterval_Default(t *testing.T) {
opt := influxql.IteratorOptions{}
expected := influxql.Interval{Duration: time.Second}
actual := opt.DerivativeInterval()
if actual != expected {
t.Errorf("expected derivative interval to be %v, got %v", expected, actual)
}
}
func TestIteratorOptions_DerivativeInterval_GroupBy(t *testing.T) {
opt := influxql.IteratorOptions{
Interval: influxql.Interval{
Duration: 10,
Offset: 2,
},
}
expected := influxql.Interval{Duration: 10}
actual := opt.DerivativeInterval()
if actual != expected {
t.Errorf("expected derivative interval to be %v, got %v", expected, actual)
}
}
func TestIteratorOptions_DerivativeInterval_Call(t *testing.T) {
opt := influxql.IteratorOptions{
Expr: &influxql.Call{
Name: "mean",
Args: []influxql.Expr{
&influxql.VarRef{Val: "value"},
&influxql.DurationLiteral{Val: 2 * time.Second},
},
},
Interval: influxql.Interval{
Duration: 10,
Offset: 2,
},
}
expected := influxql.Interval{Duration: 2 * time.Second}
actual := opt.DerivativeInterval()
if actual != expected {
t.Errorf("expected derivative interval to be %v, got %v", expected, actual)
}
}
func TestIteratorOptions_ElapsedInterval_Default(t *testing.T) {
opt := influxql.IteratorOptions{}
expected := influxql.Interval{Duration: time.Nanosecond}
actual := opt.ElapsedInterval()
if actual != expected {
t.Errorf("expected elapsed interval to be %v, got %v", expected, actual)
}
}
func TestIteratorOptions_ElapsedInterval_GroupBy(t *testing.T) {
opt := influxql.IteratorOptions{
Interval: influxql.Interval{
Duration: 10,
Offset: 2,
},
}
expected := influxql.Interval{Duration: time.Nanosecond}
actual := opt.ElapsedInterval()
if actual != expected {
t.Errorf("expected elapsed interval to be %v, got %v", expected, actual)
}
}
func TestIteratorOptions_ElapsedInterval_Call(t *testing.T) {
opt := influxql.IteratorOptions{
Expr: &influxql.Call{
Name: "mean",
Args: []influxql.Expr{
&influxql.VarRef{Val: "value"},
&influxql.DurationLiteral{Val: 2 * time.Second},
},
},
Interval: influxql.Interval{
Duration: 10,
Offset: 2,
},
}
expected := influxql.Interval{Duration: 2 * time.Second}
actual := opt.ElapsedInterval()
if actual != expected {
t.Errorf("expected elapsed interval to be %v, got %v", expected, actual)
}
}
// Ensure iterator options can be marshaled to and from a binary format.
func TestIteratorOptions_MarshalBinary(t *testing.T) {
opt := &influxql.IteratorOptions{
Expr: MustParseExpr("count(value)"),
Aux: []influxql.VarRef{{Val: "a"}, {Val: "b"}, {Val: "c"}},
Sources: []influxql.Source{
&influxql.Measurement{Database: "db0", RetentionPolicy: "rp0", Name: "mm0"},
},
Interval: influxql.Interval{
Duration: 1 * time.Hour,
Offset: 20 * time.Minute,
},
Dimensions: []string{"region", "host"},
Fill: influxql.NumberFill,
FillValue: float64(100),
Condition: MustParseExpr(`foo = 'bar'`),
StartTime: 1000,
EndTime: 2000,
Ascending: true,
Limit: 100,
Offset: 200,
SLimit: 300,
SOffset: 400,
Dedupe: true,
}
// Marshal to binary.
buf, err := opt.MarshalBinary()
if err != nil {
t.Fatal(err)
}
// Unmarshal back to an object.
var other influxql.IteratorOptions
if err := other.UnmarshalBinary(buf); err != nil {
t.Fatal(err)
} else if !reflect.DeepEqual(&other, opt) {
t.Fatalf("unexpected options: %s", spew.Sdump(other))
}
}
// Ensure iterator options with a regex measurement can be marshaled.
func TestIteratorOptions_MarshalBinary_Measurement_Regex(t *testing.T) {
opt := &influxql.IteratorOptions{
Sources: []influxql.Source{
&influxql.Measurement{Database: "db1", RetentionPolicy: "rp2", Regex: &influxql.RegexLiteral{Val: regexp.MustCompile(`series.+`)}},
},
}
// Marshal to binary.
buf, err := opt.MarshalBinary()
if err != nil {
t.Fatal(err)
}
// Unmarshal back to an object.
var other influxql.IteratorOptions
if err := other.UnmarshalBinary(buf); err != nil {
t.Fatal(err)
} else if v := other.Sources[0].(*influxql.Measurement).Regex.Val.String(); v != `series.+` {
t.Fatalf("unexpected measurement regex: %s", v)
}
}
// Ensure iterator can be encoded and decoded over a byte stream.
func TestIterator_EncodeDecode(t *testing.T) {
var buf bytes.Buffer
// Create an iterator with several points & stats.
itr := &FloatIterator{
Points: []influxql.FloatPoint{
{Name: "cpu", Tags: ParseTags("host=A"), Time: 0, Value: 0},
{Name: "mem", Tags: ParseTags("host=B"), Time: 1, Value: 10},
},
stats: influxql.IteratorStats{
SeriesN: 2,
PointN: 0,
},
}
// Encode to the buffer.
enc := influxql.NewIteratorEncoder(&buf)
enc.StatsInterval = 100 * time.Millisecond
if err := enc.EncodeIterator(itr); err != nil {
t.Fatal(err)
}
// Decode from the buffer.
dec := influxql.NewReaderIterator(&buf, influxql.Float, itr.Stats())
// Initial stats should exist immediately.
fdec := dec.(influxql.FloatIterator)
if stats := fdec.Stats(); !reflect.DeepEqual(stats, influxql.IteratorStats{SeriesN: 2, PointN: 0}) {
t.Fatalf("unexpected stats(initial): %#v", stats)
}
// Read both points.
if p, err := fdec.Next(); err != nil {
t.Fatalf("unexpected error(0): %#v", err)
} else if !reflect.DeepEqual(p, &influxql.FloatPoint{Name: "cpu", Tags: ParseTags("host=A"), Time: 0, Value: 0}) {
t.Fatalf("unexpected point(0); %#v", p)
}
if p, err := fdec.Next(); err != nil {
t.Fatalf("unexpected error(1): %#v", err)
} else if !reflect.DeepEqual(p, &influxql.FloatPoint{Name: "mem", Tags: ParseTags("host=B"), Time: 1, Value: 10}) {
t.Fatalf("unexpected point(1); %#v", p)
}
if p, err := fdec.Next(); err != nil {
t.Fatalf("unexpected error(eof): %#v", err)
} else if p != nil {
t.Fatalf("unexpected point(eof); %#v", p)
}
}
// IteratorCreator is a mockable implementation of SelectStatementExecutor.IteratorCreator.
type IteratorCreator struct {
CreateIteratorFn func(opt influxql.IteratorOptions) (influxql.Iterator, error)
FieldDimensionsFn func(sources influxql.Sources) (fields map[string]influxql.DataType, dimensions map[string]struct{}, err error)
ExpandSourcesFn func(sources influxql.Sources) (influxql.Sources, error)
}
func (ic *IteratorCreator) CreateIterator(opt influxql.IteratorOptions) (influxql.Iterator, error) {
return ic.CreateIteratorFn(opt)
}
func (ic *IteratorCreator) FieldDimensions(sources influxql.Sources) (fields map[string]influxql.DataType, dimensions map[string]struct{}, err error) {
return ic.FieldDimensionsFn(sources)
}
func (ic *IteratorCreator) ExpandSources(sources influxql.Sources) (influxql.Sources, error) {
return ic.ExpandSourcesFn(sources)
}
// Test implementation of influxql.FloatIterator
type FloatIterator struct {
Points []influxql.FloatPoint
Closed bool
stats influxql.IteratorStats
}
func (itr *FloatIterator) Stats() influxql.IteratorStats { return itr.stats }
func (itr *FloatIterator) Close() error { itr.Closed = true; return nil }
// Next returns the next value and shifts it off the beginning of the points slice.
func (itr *FloatIterator) Next() (*influxql.FloatPoint, error) {
if len(itr.Points) == 0 || itr.Closed {
return nil, nil
}
v := &itr.Points[0]
itr.Points = itr.Points[1:]
return v, nil
}
func FloatIterators(inputs []*FloatIterator) []influxql.Iterator {
itrs := make([]influxql.Iterator, len(inputs))
for i := range itrs {
itrs[i] = influxql.Iterator(inputs[i])
}
return itrs
}
// GenerateFloatIterator creates a FloatIterator with random data.
func GenerateFloatIterator(rand *rand.Rand, valueN int) *FloatIterator {
const interval = 10 * time.Second
itr := &FloatIterator{
Points: make([]influxql.FloatPoint, valueN),
}
for i := 0; i < valueN; i++ {
// Generate incrementing timestamp with some jitter (1s).
jitter := (rand.Int63n(2) * int64(time.Second))
timestamp := int64(i)*int64(10*time.Second) + jitter
itr.Points[i] = influxql.FloatPoint{
Name: "cpu",
Time: timestamp,
Value: rand.Float64(),
}
}
return itr
}
// Test implementation of influxql.IntegerIterator
type IntegerIterator struct {
Points []influxql.IntegerPoint
Closed bool
stats influxql.IteratorStats
}
func (itr *IntegerIterator) Stats() influxql.IteratorStats { return itr.stats }
func (itr *IntegerIterator) Close() error { itr.Closed = true; return nil }
// Next returns the next value and shifts it off the beginning of the points slice.
func (itr *IntegerIterator) Next() (*influxql.IntegerPoint, error) {
if len(itr.Points) == 0 || itr.Closed {
return nil, nil
}
v := &itr.Points[0]
itr.Points = itr.Points[1:]
return v, nil
}
func IntegerIterators(inputs []*IntegerIterator) []influxql.Iterator {
itrs := make([]influxql.Iterator, len(inputs))
for i := range itrs {
itrs[i] = influxql.Iterator(inputs[i])
}
return itrs
}
// Test implementation of influxql.StringIterator
type StringIterator struct {
Points []influxql.StringPoint
Closed bool
stats influxql.IteratorStats
}
func (itr *StringIterator) Stats() influxql.IteratorStats { return itr.stats }
func (itr *StringIterator) Close() error { itr.Closed = true; return nil }
// Next returns the next value and shifts it off the beginning of the points slice.
func (itr *StringIterator) Next() (*influxql.StringPoint, error) {
if len(itr.Points) == 0 || itr.Closed {
return nil, nil
}
v := &itr.Points[0]
itr.Points = itr.Points[1:]
return v, nil
}
func StringIterators(inputs []*StringIterator) []influxql.Iterator {
itrs := make([]influxql.Iterator, len(inputs))
for i := range itrs {
itrs[i] = influxql.Iterator(inputs[i])
}
return itrs
}
// Test implementation of influxql.BooleanIterator
type BooleanIterator struct {
Points []influxql.BooleanPoint
Closed bool
stats influxql.IteratorStats
}
func (itr *BooleanIterator) Stats() influxql.IteratorStats { return itr.stats }
func (itr *BooleanIterator) Close() error { itr.Closed = true; return nil }
// Next returns the next value and shifts it off the beginning of the points slice.
func (itr *BooleanIterator) Next() (*influxql.BooleanPoint, error) {
if len(itr.Points) == 0 || itr.Closed {
return nil, nil
}
v := &itr.Points[0]
itr.Points = itr.Points[1:]
return v, nil
}
func BooleanIterators(inputs []*BooleanIterator) []influxql.Iterator {
itrs := make([]influxql.Iterator, len(inputs))
for i := range itrs {
itrs[i] = influxql.Iterator(inputs[i])
}
return itrs
}
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