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| 1 | +// The MIT License |
| 2 | +// |
| 3 | +// Copyright (c) 2020 Temporal Technologies Inc. All rights reserved. |
| 4 | +// |
| 5 | +// Copyright (c) 2020 Uber Technologies, Inc. |
| 6 | +// |
| 7 | +// Permission is hereby granted, free of charge, to any person obtaining a copy |
| 8 | +// of this software and associated documentation files (the "Software"), to deal |
| 9 | +// in the Software without restriction, including without limitation the rights |
| 10 | +// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 11 | +// copies of the Software, and to permit persons to whom the Software is |
| 12 | +// furnished to do so, subject to the following conditions: |
| 13 | +// |
| 14 | +// The above copyright notice and this permission notice shall be included in |
| 15 | +// all copies or substantial portions of the Software. |
| 16 | +// |
| 17 | +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 18 | +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 19 | +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 20 | +// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 21 | +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 22 | +// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 23 | +// THE SOFTWARE. |
| 24 | + |
| 25 | +package mysql |
| 26 | + |
| 27 | +import ( |
| 28 | + "context" |
| 29 | + "database/sql" |
| 30 | + "errors" |
| 31 | + "fmt" |
| 32 | + "strings" |
| 33 | + |
| 34 | + "go.temporal.io/server/common/persistence/sql/sqlplugin" |
| 35 | +) |
| 36 | + |
| 37 | +var ( |
| 38 | + templateInsertWorkflowExecution = fmt.Sprintf( |
| 39 | + `INSERT INTO executions_visibility (%s) |
| 40 | + VALUES (%s) |
| 41 | + ON DUPLICATE KEY UPDATE run_id = VALUES(run_id)`, |
| 42 | + strings.Join(sqlplugin.DbFields, ", "), |
| 43 | + sqlplugin.BuildNamedPlaceholder(sqlplugin.DbFields...), |
| 44 | + ) |
| 45 | + |
| 46 | + templateInsertCustomSearchAttributes = ` |
| 47 | + INSERT INTO custom_search_attributes ( |
| 48 | + namespace_id, run_id, search_attributes |
| 49 | + ) VALUES (:namespace_id, :run_id, :search_attributes) |
| 50 | + ON DUPLICATE KEY UPDATE run_id = VALUES(run_id)` |
| 51 | + |
| 52 | + templateUpsertWorkflowExecution = fmt.Sprintf( |
| 53 | + `INSERT INTO executions_visibility (%s) |
| 54 | + VALUES (%s) |
| 55 | + %s`, |
| 56 | + strings.Join(sqlplugin.DbFields, ", "), |
| 57 | + sqlplugin.BuildNamedPlaceholder(sqlplugin.DbFields...), |
| 58 | + buildOnDuplicateKeyUpdate(sqlplugin.DbFields...), |
| 59 | + ) |
| 60 | + |
| 61 | + templateUpsertCustomSearchAttributes = ` |
| 62 | + INSERT INTO custom_search_attributes ( |
| 63 | + namespace_id, run_id, search_attributes |
| 64 | + ) VALUES (:namespace_id, :run_id, :search_attributes) |
| 65 | + ON DUPLICATE KEY UPDATE search_attributes = VALUES(search_attributes)` |
| 66 | + |
| 67 | + templateDeleteWorkflowExecution_v8 = ` |
| 68 | + DELETE FROM executions_visibility |
| 69 | + WHERE namespace_id = :namespace_id AND run_id = :run_id` |
| 70 | + |
| 71 | + templateDeleteCustomSearchAttributes = ` |
| 72 | + DELETE FROM custom_search_attributes |
| 73 | + WHERE namespace_id = :namespace_id AND run_id = :run_id` |
| 74 | + |
| 75 | + templateGetWorkflowExecution_v8 = fmt.Sprintf( |
| 76 | + `SELECT %s FROM executions_visibility |
| 77 | + WHERE namespace_id = :namespace_id AND run_id = :run_id`, |
| 78 | + strings.Join(sqlplugin.DbFields, ", "), |
| 79 | + ) |
| 80 | +) |
| 81 | + |
| 82 | +func buildOnDuplicateKeyUpdate(fields ...string) string { |
| 83 | + items := make([]string, len(fields)) |
| 84 | + for i, field := range fields { |
| 85 | + items[i] = fmt.Sprintf("%s = VALUES(%s)", field, field) |
| 86 | + } |
| 87 | + return fmt.Sprintf("ON DUPLICATE KEY UPDATE %s", strings.Join(items, ", ")) |
| 88 | +} |
| 89 | + |
| 90 | +// InsertIntoVisibility inserts a row into visibility table. If an row already exist, |
| 91 | +// its left as such and no update will be made |
| 92 | +func (mdb *dbV8) InsertIntoVisibility( |
| 93 | + ctx context.Context, |
| 94 | + row *sqlplugin.VisibilityRow, |
| 95 | +) (result sql.Result, retError error) { |
| 96 | + finalRow := mdb.prepareRowForDB(row) |
| 97 | + tx, err := mdb.db.db.BeginTxx(ctx, nil) |
| 98 | + if err != nil { |
| 99 | + return nil, err |
| 100 | + } |
| 101 | + defer func() { |
| 102 | + err := tx.Rollback() |
| 103 | + // If the error is sql.ErrTxDone, it means the transaction already closed, so ignore error. |
| 104 | + if err != nil && !errors.Is(err, sql.ErrTxDone) { |
| 105 | + // Transaction rollback error should never happen, unless db connection was lost. |
| 106 | + retError = fmt.Errorf("transaction rollback failed: %w", retError) |
| 107 | + } |
| 108 | + }() |
| 109 | + result, err = tx.NamedExecContext(ctx, templateInsertWorkflowExecution, finalRow) |
| 110 | + if err != nil { |
| 111 | + return nil, err |
| 112 | + } |
| 113 | + _, err = tx.NamedExecContext(ctx, templateInsertCustomSearchAttributes, finalRow) |
| 114 | + if err != nil { |
| 115 | + return nil, err |
| 116 | + } |
| 117 | + err = tx.Commit() |
| 118 | + if err != nil { |
| 119 | + return nil, err |
| 120 | + } |
| 121 | + return result, nil |
| 122 | +} |
| 123 | + |
| 124 | +// ReplaceIntoVisibility replaces an existing row if it exist or creates a new row in visibility table |
| 125 | +func (mdb *dbV8) ReplaceIntoVisibility( |
| 126 | + ctx context.Context, |
| 127 | + row *sqlplugin.VisibilityRow, |
| 128 | +) (result sql.Result, retError error) { |
| 129 | + finalRow := mdb.prepareRowForDB(row) |
| 130 | + tx, err := mdb.db.db.BeginTxx(ctx, nil) |
| 131 | + if err != nil { |
| 132 | + return nil, err |
| 133 | + } |
| 134 | + defer func() { |
| 135 | + err := tx.Rollback() |
| 136 | + // If the error is sql.ErrTxDone, it means the transaction already closed, so ignore error. |
| 137 | + if err != nil && !errors.Is(err, sql.ErrTxDone) { |
| 138 | + // Transaction rollback error should never happen, unless db connection was lost. |
| 139 | + retError = fmt.Errorf("transaction rollback failed: %w", retError) |
| 140 | + } |
| 141 | + }() |
| 142 | + result, err = tx.NamedExecContext(ctx, templateUpsertWorkflowExecution, finalRow) |
| 143 | + if err != nil { |
| 144 | + return nil, err |
| 145 | + } |
| 146 | + _, err = tx.NamedExecContext(ctx, templateUpsertCustomSearchAttributes, finalRow) |
| 147 | + if err != nil { |
| 148 | + return nil, err |
| 149 | + } |
| 150 | + err = tx.Commit() |
| 151 | + if err != nil { |
| 152 | + return nil, err |
| 153 | + } |
| 154 | + return result, nil |
| 155 | +} |
| 156 | + |
| 157 | +// DeleteFromVisibility deletes a row from visibility table if it exist |
| 158 | +func (mdb *dbV8) DeleteFromVisibility( |
| 159 | + ctx context.Context, |
| 160 | + filter sqlplugin.VisibilityDeleteFilter, |
| 161 | +) (result sql.Result, retError error) { |
| 162 | + tx, err := mdb.db.db.BeginTxx(ctx, nil) |
| 163 | + if err != nil { |
| 164 | + return nil, err |
| 165 | + } |
| 166 | + defer func() { |
| 167 | + err := tx.Rollback() |
| 168 | + // If the error is sql.ErrTxDone, it means the transaction already closed, so ignore error. |
| 169 | + if err != nil && !errors.Is(err, sql.ErrTxDone) { |
| 170 | + // Transaction rollback error should never happen, unless db connection was lost. |
| 171 | + retError = fmt.Errorf("transaction rollback failed: %w", retError) |
| 172 | + } |
| 173 | + }() |
| 174 | + _, err = mdb.conn.NamedExecContext(ctx, templateDeleteCustomSearchAttributes, filter) |
| 175 | + if err != nil { |
| 176 | + return nil, err |
| 177 | + } |
| 178 | + result, err = mdb.conn.NamedExecContext(ctx, templateDeleteWorkflowExecution_v8, filter) |
| 179 | + if err != nil { |
| 180 | + return nil, err |
| 181 | + } |
| 182 | + err = tx.Commit() |
| 183 | + if err != nil { |
| 184 | + return nil, err |
| 185 | + } |
| 186 | + return result, nil |
| 187 | +} |
| 188 | + |
| 189 | +// SelectFromVisibility reads one or more rows from visibility table |
| 190 | +func (mdb *dbV8) SelectFromVisibility( |
| 191 | + ctx context.Context, |
| 192 | + filter sqlplugin.VisibilitySelectFilter, |
| 193 | +) ([]sqlplugin.VisibilityRow, error) { |
| 194 | + if len(filter.Query) == 0 { |
| 195 | + // backward compatibility for existing tests |
| 196 | + err := sqlplugin.GenerateSelectQuery(&filter, mdb.converter.ToMySQLDateTime) |
| 197 | + if err != nil { |
| 198 | + return nil, err |
| 199 | + } |
| 200 | + } |
| 201 | + |
| 202 | + var rows []sqlplugin.VisibilityRow |
| 203 | + err := mdb.conn.SelectContext(ctx, &rows, filter.Query, filter.QueryArgs...) |
| 204 | + if err != nil { |
| 205 | + return nil, err |
| 206 | + } |
| 207 | + for i := range rows { |
| 208 | + err = mdb.processRowFromDB(&rows[i]) |
| 209 | + if err != nil { |
| 210 | + return nil, err |
| 211 | + } |
| 212 | + } |
| 213 | + return rows, nil |
| 214 | +} |
| 215 | + |
| 216 | +// GetFromVisibility reads one row from visibility table |
| 217 | +func (mdb *dbV8) GetFromVisibility( |
| 218 | + ctx context.Context, |
| 219 | + filter sqlplugin.VisibilityGetFilter, |
| 220 | +) (*sqlplugin.VisibilityRow, error) { |
| 221 | + var row sqlplugin.VisibilityRow |
| 222 | + stmt, err := mdb.conn.PrepareNamedContext(ctx, templateGetWorkflowExecution_v8) |
| 223 | + if err != nil { |
| 224 | + return nil, err |
| 225 | + } |
| 226 | + err = stmt.GetContext(ctx, &row, filter) |
| 227 | + if err != nil { |
| 228 | + return nil, err |
| 229 | + } |
| 230 | + err = mdb.processRowFromDB(&row) |
| 231 | + if err != nil { |
| 232 | + return nil, err |
| 233 | + } |
| 234 | + return &row, nil |
| 235 | +} |
| 236 | + |
| 237 | +func (mdb *dbV8) prepareRowForDB(row *sqlplugin.VisibilityRow) *sqlplugin.VisibilityRow { |
| 238 | + if row == nil { |
| 239 | + return nil |
| 240 | + } |
| 241 | + finalRow := *row |
| 242 | + finalRow.StartTime = mdb.converter.ToMySQLDateTime(finalRow.StartTime) |
| 243 | + finalRow.ExecutionTime = mdb.converter.ToMySQLDateTime(finalRow.ExecutionTime) |
| 244 | + if finalRow.CloseTime != nil { |
| 245 | + *finalRow.CloseTime = mdb.converter.ToMySQLDateTime(*finalRow.CloseTime) |
| 246 | + } |
| 247 | + return &finalRow |
| 248 | +} |
| 249 | + |
| 250 | +func (mdb *dbV8) processRowFromDB(row *sqlplugin.VisibilityRow) error { |
| 251 | + if row == nil { |
| 252 | + return nil |
| 253 | + } |
| 254 | + row.StartTime = mdb.converter.FromMySQLDateTime(row.StartTime) |
| 255 | + row.ExecutionTime = mdb.converter.FromMySQLDateTime(row.ExecutionTime) |
| 256 | + if row.CloseTime != nil { |
| 257 | + closeTime := mdb.converter.FromMySQLDateTime(*row.CloseTime) |
| 258 | + row.CloseTime = &closeTime |
| 259 | + } |
| 260 | + if row.SearchAttributes != nil { |
| 261 | + for saName, saValue := range *row.SearchAttributes { |
| 262 | + switch typedSaValue := saValue.(type) { |
| 263 | + case []interface{}: |
| 264 | + // the only valid type is slice of strings |
| 265 | + strSlice := make([]string, len(typedSaValue)) |
| 266 | + for i, item := range typedSaValue { |
| 267 | + switch v := item.(type) { |
| 268 | + case string: |
| 269 | + strSlice[i] = v |
| 270 | + default: |
| 271 | + return fmt.Errorf("Unexpected data type in keyword list: %T (expected string)", v) |
| 272 | + } |
| 273 | + } |
| 274 | + (*row.SearchAttributes)[saName] = strSlice |
| 275 | + default: |
| 276 | + // no-op |
| 277 | + } |
| 278 | + } |
| 279 | + } |
| 280 | + return nil |
| 281 | +} |
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