mirror of https://github.com/tidwall/tile38.git
81 lines
2.0 KiB
Go
81 lines
2.0 KiB
Go
package controller
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import (
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"bytes"
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"strings"
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"time"
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"github.com/tidwall/resp"
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"github.com/tidwall/tile38/controller/collection"
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"github.com/tidwall/tile38/controller/server"
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"github.com/tidwall/tile38/geojson"
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)
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func cmdScanArgs(vs []resp.Value) (s liveFenceSwitches, err error) {
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if vs, s.searchScanBaseTokens, err = parseSearchScanBaseTokens("scan", vs); err != nil {
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return
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}
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if len(vs) != 0 {
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err = errInvalidNumberOfArguments
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return
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}
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return
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}
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func (c *Controller) cmdScan(msg *server.Message) (res string, err error) {
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start := time.Now()
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vs := msg.Values[1:]
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wr := &bytes.Buffer{}
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s, err := cmdScanArgs(vs)
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if err != nil {
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return "", err
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}
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sw, err := c.newScanWriter(wr, msg, s.key, s.output, s.precision, s.glob, s.limit, s.wheres, s.nofields)
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if err != nil {
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return "", err
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}
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if msg.OutputType == server.JSON {
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wr.WriteString(`{"ok":true`)
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}
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sw.writeHead()
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if sw.col != nil {
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stype := collection.TypeAll
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if sw.output == outputCount && len(sw.wheres) == 0 && sw.globEverything == true {
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count := sw.col.Count(stype) - int(s.cursor)
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if count < 0 {
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count = 0
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}
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sw.count = uint64(count)
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} else {
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if strings.HasSuffix(sw.glob, "*") {
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greaterGlob := sw.glob[:len(sw.glob)-1]
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if globIsGlob(greaterGlob) {
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s.cursor = sw.col.Scan(s.cursor, stype,
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func(id string, o geojson.Object, fields []float64) bool {
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return sw.writeObject(id, o, fields, false)
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},
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)
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} else {
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s.cursor = sw.col.ScanGreaterOrEqual(greaterGlob, s.cursor, stype,
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func(id string, o geojson.Object, fields []float64) bool {
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return sw.writeObject(id, o, fields, false)
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},
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)
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}
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} else {
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s.cursor = sw.col.Scan(s.cursor, stype,
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func(id string, o geojson.Object, fields []float64) bool {
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return sw.writeObject(id, o, fields, false)
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},
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)
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}
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}
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}
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sw.writeFoot(s.cursor)
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if msg.OutputType == server.JSON {
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wr.WriteString(`,"elapsed":"` + time.Now().Sub(start).String() + "\"}")
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}
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return string(wr.Bytes()), nil
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}
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