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## What changed? <!-- Describe what has changed in this PR --> Add a "SQL_like" queries and evaluate them agains a activity info. ## Why? <!-- Tell your future self why have you made these changes --> Part of workflow rules work. This will allow to filter activities by SQL-like queries. Previous [related PR](https://github.com/temporalio/temporal/pull/7072). ## How did you test it? <!-- How have you verified this change? Tested locally? Added a unit test? Checked in staging env? --> Add unit tests.
111 lines
3.7 KiB
Go
111 lines
3.7 KiB
Go
// The MIT License
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//
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// Copyright (c) 2025 Temporal Technologies Inc. All rights reserved.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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package matcher
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import (
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"fmt"
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"strings"
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"github.com/temporalio/sqlparser"
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)
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type Evaluator interface {
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Evaluate(query string) (bool, error)
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}
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func getWhereCause(query string) (sqlparser.Expr, error) {
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stmt, err := sqlparser.Parse(query)
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if err != nil {
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return nil, NewMatcherError("%s: %v", malformedSqlQueryErrMessage, err)
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}
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selectStmt, isSelect := stmt.(*sqlparser.Select)
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if !isSelect {
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return nil, NewMatcherError("%s: statement must be 'select' not %T", notSupportedErrMessage, stmt)
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}
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if selectStmt.Limit != nil {
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return nil, NewMatcherError("%s: 'limit' clause", notSupportedErrMessage)
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}
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if selectStmt.Where == nil {
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return nil, NewMatcherError("%s: 'where' clause is missing", notSupportedErrMessage)
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}
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return selectStmt.Where.Expr, nil
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}
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func prepareQuery(query string) (string, error) {
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query = strings.TrimSpace(query)
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if query == "" {
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return "", nil
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}
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if strings.HasPrefix(strings.ToLower(query), "where ") ||
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strings.HasPrefix(strings.ToLower(query), "select ") {
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return "", fmt.Errorf("invalid filter: %s", query)
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}
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// sqlparser can't parse just WHERE clause but instead accepts only valid SQL statement.
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query = fmt.Sprintf("select * from table1 where %s", query)
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return query, nil
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}
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func compareQueryString(inStr string, expectedStr string, operation string, fieldName string) (bool, error) {
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if len(inStr) == 0 {
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return false, NewMatcherError("%s cannot be empty", fieldName)
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}
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switch operation {
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case sqlparser.EqualStr:
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return expectedStr == inStr, nil
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case sqlparser.NotEqualStr:
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return expectedStr != inStr, nil
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case sqlparser.StartsWithStr:
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return strings.HasPrefix(expectedStr, inStr), nil
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case sqlparser.NotStartsWithStr:
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return !strings.HasPrefix(expectedStr, inStr), nil
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default:
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return false, NewMatcherError("%s: operation %s is not supported for %s filter", invalidExpressionErrMessage, operation, fieldName)
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}
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}
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func compareQueryInt(inVal int, expectedVal int, operation string, fieldName string) (bool, error) {
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switch operation {
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case sqlparser.EqualStr:
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return inVal == expectedVal, nil
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case sqlparser.NotEqualStr:
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return inVal != expectedVal, nil
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case sqlparser.GreaterThanStr:
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return expectedVal > inVal, nil
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case sqlparser.GreaterEqualStr:
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return expectedVal >= inVal, nil
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case sqlparser.LessThanStr:
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return expectedVal < inVal, nil
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case sqlparser.LessEqualStr:
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return expectedVal <= inVal, nil
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default:
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return false, NewMatcherError("%s: operation %s is not supported for %s filter", invalidExpressionErrMessage, operation, fieldName)
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}
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}
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