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[release-16.0] fix concurrency on stream execute engine primitives (v…
…itessio#14586) (vitessio#14590) Signed-off-by: Harshit Gangal <[email protected]> Signed-off-by: Dirkjan Bussink <[email protected]> Co-authored-by: Harshit Gangal <[email protected]> Co-authored-by: Dirkjan Bussink <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,174 @@ | ||
| /* | ||
| Copyright 2023 The Vitess Authors. | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
|
|
||
| package sqltypes | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "io" | ||
| "reflect" | ||
| "strconv" | ||
| "strings" | ||
| "text/scanner" | ||
|
|
||
| querypb "vitess.io/vitess/go/vt/proto/query" | ||
| ) | ||
|
|
||
| // ParseRows parses the output generated by fmt.Sprintf("#v", rows), and reifies the original []sqltypes.Row | ||
| // NOTE: This is not meant for production use! | ||
| func ParseRows(input string) ([]Row, error) { | ||
| type state int | ||
| const ( | ||
| stInvalid state = iota | ||
| stInit | ||
| stBeginRow | ||
| stInRow | ||
| stInValue0 | ||
| stInValue1 | ||
| stInValue2 | ||
| ) | ||
|
|
||
| var ( | ||
| scan scanner.Scanner | ||
| result []Row | ||
| row Row | ||
| vtype int32 | ||
| st = stInit | ||
| ) | ||
|
|
||
| scan.Init(strings.NewReader(input)) | ||
|
|
||
| for tok := scan.Scan(); tok != scanner.EOF; tok = scan.Scan() { | ||
| var next state | ||
|
|
||
| switch st { | ||
| case stInit: | ||
| if tok == '[' { | ||
| next = stBeginRow | ||
| } | ||
| case stBeginRow: | ||
| switch tok { | ||
| case '[': | ||
| next = stInRow | ||
| case ']': | ||
| return result, nil | ||
| } | ||
| case stInRow: | ||
| switch tok { | ||
| case ']': | ||
| result = append(result, row) | ||
| row = nil | ||
| next = stBeginRow | ||
| case scanner.Ident: | ||
| ident := scan.TokenText() | ||
|
|
||
| if ident == "NULL" { | ||
| row = append(row, NULL) | ||
| continue | ||
| } | ||
|
|
||
| var ok bool | ||
| vtype, ok = querypb.Type_value[ident] | ||
| if !ok { | ||
| return nil, fmt.Errorf("unknown SQL type %q at %s", ident, scan.Position) | ||
| } | ||
| next = stInValue0 | ||
| } | ||
| case stInValue0: | ||
| if tok == '(' { | ||
| next = stInValue1 | ||
| } | ||
| case stInValue1: | ||
| literal := scan.TokenText() | ||
| switch tok { | ||
| case scanner.String: | ||
| var err error | ||
| literal, err = strconv.Unquote(literal) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to parse literal string at %s: %w", scan.Position, err) | ||
| } | ||
| fallthrough | ||
| case scanner.Int, scanner.Float: | ||
| row = append(row, MakeTrusted(Type(vtype), []byte(literal))) | ||
| next = stInValue2 | ||
| } | ||
| case stInValue2: | ||
| if tok == ')' { | ||
| next = stInRow | ||
| } | ||
| } | ||
| if next == stInvalid { | ||
| return nil, fmt.Errorf("unexpected token '%s' at %s", scan.TokenText(), scan.Position) | ||
| } | ||
| st = next | ||
| } | ||
| return nil, io.ErrUnexpectedEOF | ||
| } | ||
|
|
||
| type RowMismatchError struct { | ||
| err error | ||
| want, got []Row | ||
| } | ||
|
|
||
| func (e *RowMismatchError) Error() string { | ||
| return fmt.Sprintf("results differ: %v\n\twant: %v\n\tgot: %v", e.err, e.want, e.got) | ||
| } | ||
|
|
||
| func RowsEquals(want, got []Row) error { | ||
| if len(want) != len(got) { | ||
| return &RowMismatchError{ | ||
| err: fmt.Errorf("expected %d rows in result, got %d", len(want), len(got)), | ||
| want: want, | ||
| got: got, | ||
| } | ||
| } | ||
|
|
||
| var matched = make([]bool, len(want)) | ||
| for _, aa := range want { | ||
| var ok bool | ||
| for i, bb := range got { | ||
| if matched[i] { | ||
| continue | ||
| } | ||
| if reflect.DeepEqual(aa, bb) { | ||
| matched[i] = true | ||
| ok = true | ||
| break | ||
| } | ||
| } | ||
| if !ok { | ||
| return &RowMismatchError{ | ||
| err: fmt.Errorf("row %v is missing from result", aa), | ||
| want: want, | ||
| got: got, | ||
| } | ||
| } | ||
| } | ||
| for _, m := range matched { | ||
| if !m { | ||
| return fmt.Errorf("not all elements matched") | ||
| } | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func RowsEqualsStr(wantStr string, got []Row) error { | ||
| want, err := ParseRows(wantStr) | ||
| if err != nil { | ||
| return fmt.Errorf("malformed row assertion: %w", err) | ||
| } | ||
| return RowsEquals(want, got) | ||
| } |
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