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query.go
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query.go
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package query
import (
"bufio"
"context"
"errors"
"flag"
"fmt"
"io"
"os"
"path/filepath"
"strconv"
"strings"
"time"
"github.com/gogo/protobuf/types"
"github.com/influxdata/influxdb/models"
"github.com/influxdata/influxdb/services/storage"
"github.com/influxdata/influxql"
"github.com/influxdata/platform/storage/reads/datatypes"
"go.uber.org/zap"
"google.golang.org/grpc"
)
// Command represents the program execution for "store query".
type Command struct {
// Standard input/output, overridden for testing.
Stderr io.Writer
Stdout io.Writer
Logger *zap.Logger
addr string
cpuProfile string
memProfile string
database string
retentionPolicy string
startTime int64
endTime int64
limit int64
slimit int64
soffset int64
desc bool
silent bool
expr string
agg string
groupArg string
group datatypes.ReadRequest_Group
groupKeys string
keys []string
hintsArg string
hints datatypes.HintFlags
aggType datatypes.Aggregate_AggregateType
// response
integerSum int64
unsignedSum uint64
floatSum float64
pointCount uint64
}
// NewCommand returns a new instance of Command.
func NewCommand() *Command {
return &Command{
Stderr: os.Stderr,
Stdout: os.Stdout,
}
}
func parseTime(v string) (int64, error) {
if s, err := time.Parse(time.RFC3339, v); err == nil {
return s.UnixNano(), nil
}
if i, err := strconv.ParseInt(v, 10, 64); err == nil {
return i, nil
}
return 0, errors.New("invalid time")
}
// Run executes the command.
func (cmd *Command) Run(args ...string) error {
var start, end string
fs := flag.NewFlagSet("query", flag.ExitOnError)
fs.StringVar(&cmd.cpuProfile, "cpuprofile", "", "CPU profile name")
fs.StringVar(&cmd.memProfile, "memprofile", "", "memory profile name")
fs.StringVar(&cmd.addr, "addr", ":8082", "the RPC address")
fs.StringVar(&cmd.database, "database", "", "the database to query")
fs.StringVar(&cmd.retentionPolicy, "retention", "", "Optional: the retention policy to query")
fs.StringVar(&start, "start", "", "Optional: the start time to query (RFC3339 format)")
fs.StringVar(&end, "end", "", "Optional: the end time to query (RFC3339 format)")
fs.Int64Var(&cmd.slimit, "slimit", 0, "Optional: limit number of series")
fs.Int64Var(&cmd.soffset, "soffset", 0, "Optional: start offset for series")
fs.Int64Var(&cmd.limit, "limit", 0, "Optional: limit number of values per series (-1 to return series only)")
fs.BoolVar(&cmd.desc, "desc", false, "Optional: return results in descending order")
fs.BoolVar(&cmd.silent, "silent", false, "silence output")
fs.StringVar(&cmd.expr, "expr", "", "InfluxQL conditional expression")
fs.StringVar(&cmd.agg, "agg", "", "aggregate functions (sum, count)")
fs.StringVar(&cmd.groupArg, "group", "none", "group operation (none,all,by,except,disable)")
fs.StringVar(&cmd.groupKeys, "group-keys", "", "comma-separated list of tags to specify series order")
fs.StringVar(&cmd.hintsArg, "hints", "none", "comma-separated list of read hints (none,no_points,no_series)")
fs.SetOutput(cmd.Stdout)
fs.Usage = func() {
fmt.Fprintln(cmd.Stdout, "Query via RPC")
fmt.Fprintf(cmd.Stdout, "Usage: %s query [flags]\n\n", filepath.Base(os.Args[0]))
fs.PrintDefaults()
}
if err := fs.Parse(args); err != nil {
return err
}
// set defaults
if start != "" {
t, err := parseTime(start)
if err != nil {
return err
}
cmd.startTime = t
} else {
cmd.startTime = models.MinNanoTime
}
if end != "" {
t, err := parseTime(end)
if err != nil {
return err
}
cmd.endTime = t
} else {
// set end time to max if it is not set.
cmd.endTime = models.MaxNanoTime
}
if cmd.groupKeys != "" {
cmd.keys = strings.Split(cmd.groupKeys, ",")
}
if err := cmd.validate(); err != nil {
return err
}
conn, err := grpc.Dial(cmd.addr, grpc.WithInsecure())
if err != nil {
return err
}
defer conn.Close()
return cmd.query(datatypes.NewStorageClient(conn))
}
func (cmd *Command) validate() error {
if cmd.database == "" {
return fmt.Errorf("must specify a database")
}
if cmd.startTime != 0 && cmd.endTime != 0 && cmd.endTime < cmd.startTime {
return fmt.Errorf("end time before start time")
}
if cmd.agg != "" {
agg, ok := datatypes.Aggregate_AggregateType_value[strings.ToUpper(cmd.agg)]
if !ok {
return errors.New("invalid aggregate function: " + cmd.agg)
}
cmd.aggType = datatypes.Aggregate_AggregateType(agg)
}
group, ok := datatypes.ReadRequest_Group_value["GROUP_"+strings.ToUpper(cmd.groupArg)]
if !ok {
return errors.New("invalid group type: " + cmd.groupArg)
}
cmd.group = datatypes.ReadRequest_Group(group)
for _, h := range strings.Split(cmd.hintsArg, ",") {
cmd.hints |= datatypes.HintFlags(datatypes.ReadRequest_HintFlags_value["HINT_"+strings.ToUpper(h)])
}
return nil
}
func (cmd *Command) query(c datatypes.StorageClient) error {
src := storage.ReadSource{
Database: cmd.database,
RetentionPolicy: cmd.retentionPolicy,
}
var req datatypes.ReadRequest
if any, err := types.MarshalAny(&src); err != nil {
return err
} else {
req.ReadSource = any
}
req.TimestampRange.Start = cmd.startTime
req.TimestampRange.End = cmd.endTime
req.SeriesLimit = cmd.slimit
req.SeriesOffset = cmd.soffset
req.PointsLimit = cmd.limit
req.Descending = cmd.desc
req.Group = cmd.group
req.GroupKeys = cmd.keys
req.Hints = cmd.hints
if cmd.aggType != datatypes.AggregateTypeNone {
req.Aggregate = &datatypes.Aggregate{Type: cmd.aggType}
}
if cmd.expr != "" {
expr, err := influxql.ParseExpr(cmd.expr)
if err != nil {
return nil
}
fmt.Fprintln(cmd.Stdout, expr)
var v exprToNodeVisitor
influxql.Walk(&v, expr)
if v.Err() != nil {
return v.Err()
}
req.Predicate = &datatypes.Predicate{Root: v.nodes[0]}
}
stream, err := c.Read(context.Background(), &req)
if err != nil {
fmt.Fprintln(cmd.Stdout, err)
return err
}
wr := bufio.NewWriter(os.Stdout)
now := time.Now()
defer func() {
dur := time.Since(now)
fmt.Fprintf(cmd.Stdout, "time: %v\n", dur)
}()
for {
var rep datatypes.ReadResponse
if err = stream.RecvMsg(&rep); err != nil {
if err == io.EOF {
break
}
return err
}
if cmd.silent {
cmd.processFramesSilent(rep.Frames)
} else {
cmd.processFrames(wr, rep.Frames)
}
}
fmt.Fprintln(cmd.Stdout)
fmt.Fprint(cmd.Stdout, "points(count): ", cmd.pointCount, ", sum(int64): ", cmd.integerSum, ", sum(uint64): ", cmd.unsignedSum, ", sum(float64): ", cmd.floatSum, "\n")
return nil
}
func (cmd *Command) processFramesSilent(frames []datatypes.ReadResponse_Frame) {
for _, frame := range frames {
switch f := frame.Data.(type) {
case *datatypes.ReadResponse_Frame_IntegerPoints:
for _, v := range f.IntegerPoints.Values {
cmd.integerSum += v
}
cmd.pointCount += uint64(len(f.IntegerPoints.Values))
case *datatypes.ReadResponse_Frame_UnsignedPoints:
for _, v := range f.UnsignedPoints.Values {
cmd.unsignedSum += v
}
cmd.pointCount += uint64(len(f.UnsignedPoints.Values))
case *datatypes.ReadResponse_Frame_FloatPoints:
for _, v := range f.FloatPoints.Values {
cmd.floatSum += v
}
cmd.pointCount += uint64(len(f.FloatPoints.Values))
case *datatypes.ReadResponse_Frame_StringPoints:
cmd.pointCount += uint64(len(f.StringPoints.Values))
case *datatypes.ReadResponse_Frame_BooleanPoints:
cmd.pointCount += uint64(len(f.BooleanPoints.Values))
}
}
}
func printByteSlice(wr *bufio.Writer, v [][]byte) {
wr.WriteString("[\033[36m")
first := true
for _, t := range v {
if !first {
wr.WriteByte(',')
} else {
first = false
}
wr.Write(t)
}
wr.WriteString("\033[0m]\n")
}
func (cmd *Command) processFrames(wr *bufio.Writer, frames []datatypes.ReadResponse_Frame) {
var buf [1024]byte
var line []byte
for _, frame := range frames {
switch f := frame.Data.(type) {
case *datatypes.ReadResponse_Frame_Group:
g := f.Group
wr.WriteString("partition values")
printByteSlice(wr, g.PartitionKeyVals)
wr.WriteString("group keys")
printByteSlice(wr, g.TagKeys)
wr.Flush()
case *datatypes.ReadResponse_Frame_Series:
s := f.Series
wr.WriteString("\033[36m")
first := true
for _, t := range s.Tags {
if !first {
wr.WriteByte(',')
} else {
first = false
}
wr.Write(t.Key)
wr.WriteByte(':')
wr.Write(t.Value)
}
wr.WriteString("\033[0m\n")
wr.Flush()
case *datatypes.ReadResponse_Frame_IntegerPoints:
p := f.IntegerPoints
for i := 0; i < len(p.Timestamps); i++ {
line = buf[:0]
wr.Write(strconv.AppendInt(line, p.Timestamps[i], 10))
wr.WriteByte(' ')
line = buf[:0]
wr.Write(strconv.AppendInt(line, p.Values[i], 10))
wr.WriteString("\n")
wr.Flush()
cmd.integerSum += p.Values[i]
}
cmd.pointCount += uint64(len(f.IntegerPoints.Values))
case *datatypes.ReadResponse_Frame_UnsignedPoints:
p := f.UnsignedPoints
for i := 0; i < len(p.Timestamps); i++ {
line = buf[:0]
wr.Write(strconv.AppendInt(line, p.Timestamps[i], 10))
wr.WriteByte(' ')
line = buf[:0]
wr.Write(strconv.AppendUint(line, p.Values[i], 10))
wr.WriteString("\n")
wr.Flush()
cmd.unsignedSum += p.Values[i]
}
cmd.pointCount += uint64(len(f.UnsignedPoints.Values))
case *datatypes.ReadResponse_Frame_FloatPoints:
p := f.FloatPoints
for i := 0; i < len(p.Timestamps); i++ {
line = buf[:0]
wr.Write(strconv.AppendInt(line, p.Timestamps[i], 10))
wr.WriteByte(' ')
line = buf[:0]
wr.Write(strconv.AppendFloat(line, p.Values[i], 'f', 10, 64))
wr.WriteString("\n")
wr.Flush()
cmd.floatSum += p.Values[i]
}
cmd.pointCount += uint64(len(f.FloatPoints.Values))
case *datatypes.ReadResponse_Frame_StringPoints:
p := f.StringPoints
for i := 0; i < len(p.Timestamps); i++ {
line = buf[:0]
wr.Write(strconv.AppendInt(line, p.Timestamps[i], 10))
wr.WriteByte(' ')
wr.WriteString(p.Values[i])
wr.WriteString("\n")
wr.Flush()
}
cmd.pointCount += uint64(len(f.StringPoints.Values))
case *datatypes.ReadResponse_Frame_BooleanPoints:
p := f.BooleanPoints
for i := 0; i < len(p.Timestamps); i++ {
line = buf[:0]
wr.Write(strconv.AppendInt(line, p.Timestamps[i], 10))
wr.WriteByte(' ')
if p.Values[i] {
wr.WriteString("true")
} else {
wr.WriteString("false")
}
wr.WriteString("\n")
wr.Flush()
}
cmd.pointCount += uint64(len(f.BooleanPoints.Values))
}
}
}
type exprToNodeVisitor struct {
nodes []*datatypes.Node
err error
}
func (v *exprToNodeVisitor) Err() error {
return v.err
}
func (v *exprToNodeVisitor) pop() (top *datatypes.Node) {
if len(v.nodes) < 1 {
panic("exprToNodeVisitor: stack empty")
}
top, v.nodes = v.nodes[len(v.nodes)-1], v.nodes[:len(v.nodes)-1]
return
}
func (v *exprToNodeVisitor) pop2() (lhs, rhs *datatypes.Node) {
if len(v.nodes) < 2 {
panic("exprToNodeVisitor: stack empty")
}
rhs = v.nodes[len(v.nodes)-1]
lhs = v.nodes[len(v.nodes)-2]
v.nodes = v.nodes[:len(v.nodes)-2]
return
}
func mapOpToComparison(op influxql.Token) datatypes.Node_Comparison {
switch op {
case influxql.EQ:
return datatypes.ComparisonEqual
case influxql.EQREGEX:
return datatypes.ComparisonRegex
case influxql.NEQ:
return datatypes.ComparisonNotEqual
case influxql.NEQREGEX:
return datatypes.ComparisonNotEqual
case influxql.LT:
return datatypes.ComparisonLess
case influxql.LTE:
return datatypes.ComparisonLessEqual
case influxql.GT:
return datatypes.ComparisonGreater
case influxql.GTE:
return datatypes.ComparisonGreaterEqual
default:
return -1
}
}
func (v *exprToNodeVisitor) Visit(node influxql.Node) influxql.Visitor {
switch n := node.(type) {
case *influxql.BinaryExpr:
if v.err != nil {
return nil
}
influxql.Walk(v, n.LHS)
if v.err != nil {
return nil
}
influxql.Walk(v, n.RHS)
if v.err != nil {
return nil
}
if comp := mapOpToComparison(n.Op); comp != -1 {
lhs, rhs := v.pop2()
v.nodes = append(v.nodes, &datatypes.Node{
NodeType: datatypes.NodeTypeComparisonExpression,
Value: &datatypes.Node_Comparison_{Comparison: comp},
Children: []*datatypes.Node{lhs, rhs},
})
} else if n.Op == influxql.AND || n.Op == influxql.OR {
var op datatypes.Node_Logical
if n.Op == influxql.AND {
op = datatypes.LogicalAnd
} else {
op = datatypes.LogicalOr
}
lhs, rhs := v.pop2()
v.nodes = append(v.nodes, &datatypes.Node{
NodeType: datatypes.NodeTypeLogicalExpression,
Value: &datatypes.Node_Logical_{Logical: op},
Children: []*datatypes.Node{lhs, rhs},
})
} else {
v.err = fmt.Errorf("unsupported operator, %s", n.Op)
}
return nil
case *influxql.ParenExpr:
influxql.Walk(v, n.Expr)
if v.err != nil {
return nil
}
v.nodes = append(v.nodes, &datatypes.Node{
NodeType: datatypes.NodeTypeParenExpression,
Children: []*datatypes.Node{v.pop()},
})
return nil
case *influxql.StringLiteral:
v.nodes = append(v.nodes, &datatypes.Node{
NodeType: datatypes.NodeTypeLiteral,
Value: &datatypes.Node_StringValue{StringValue: n.Val},
})
return nil
case *influxql.NumberLiteral:
v.nodes = append(v.nodes, &datatypes.Node{
NodeType: datatypes.NodeTypeLiteral,
Value: &datatypes.Node_FloatValue{FloatValue: n.Val},
})
return nil
case *influxql.IntegerLiteral:
v.nodes = append(v.nodes, &datatypes.Node{
NodeType: datatypes.NodeTypeLiteral,
Value: &datatypes.Node_IntegerValue{IntegerValue: n.Val},
})
return nil
case *influxql.UnsignedLiteral:
v.nodes = append(v.nodes, &datatypes.Node{
NodeType: datatypes.NodeTypeLiteral,
Value: &datatypes.Node_UnsignedValue{UnsignedValue: n.Val},
})
return nil
case *influxql.VarRef:
v.nodes = append(v.nodes, &datatypes.Node{
NodeType: datatypes.NodeTypeTagRef,
Value: &datatypes.Node_TagRefValue{TagRefValue: n.Val},
})
return nil
case *influxql.RegexLiteral:
v.nodes = append(v.nodes, &datatypes.Node{
NodeType: datatypes.NodeTypeLiteral,
Value: &datatypes.Node_RegexValue{RegexValue: n.Val.String()},
})
return nil
default:
v.err = fmt.Errorf("unsupported expression %T", n)
return nil
}
}