(offset int64, data []byte, replace bool)
| 157 | } |
| 158 | |
| 159 | func (entry *CacheEntry) writeAt(offset int64, data []byte, replace bool) { |
| 160 | if replace { |
| 161 | entry.File.Size = 0 |
| 162 | } |
| 163 | if entry.File.Opts.Circular { |
| 164 | startCirFileOffset := entry.File.Size - entry.File.Opts.MaxSize |
| 165 | if offset+int64(len(data)) <= startCirFileOffset { |
| 166 | // write is before the start of the circular file |
| 167 | return |
| 168 | } |
| 169 | if offset < startCirFileOffset { |
| 170 | // truncate data (from the front), update offset |
| 171 | truncateAmt := startCirFileOffset - offset |
| 172 | data = data[truncateAmt:] |
| 173 | offset += truncateAmt |
| 174 | } |
| 175 | if int64(len(data)) > entry.File.Opts.MaxSize { |
| 176 | // truncate data (from the front), update offset |
| 177 | truncateAmt := int64(len(data)) - entry.File.Opts.MaxSize |
| 178 | data = data[truncateAmt:] |
| 179 | offset += truncateAmt |
| 180 | } |
| 181 | } |
| 182 | endWriteOffset := offset + int64(len(data)) |
| 183 | if replace { |
| 184 | entry.DataEntries = make(map[int]*DataCacheEntry) |
| 185 | } |
| 186 | for len(data) > 0 { |
| 187 | partIdx := int(offset / partDataSize) |
| 188 | if entry.File.Opts.Circular { |
| 189 | maxPart := int(entry.File.Opts.MaxSize / partDataSize) |
| 190 | partIdx = partIdx % maxPart |
| 191 | } |
| 192 | partOffset := offset % partDataSize |
| 193 | partData := entry.getOrCreateDataCacheEntry(partIdx) |
| 194 | nw, newDce := partData.writeToPart(partOffset, data) |
| 195 | entry.DataEntries[partIdx] = newDce |
| 196 | data = data[nw:] |
| 197 | offset += nw |
| 198 | } |
| 199 | if endWriteOffset > entry.File.Size || replace { |
| 200 | entry.File.Size = endWriteOffset |
| 201 | } |
| 202 | entry.File.ModTs = time.Now().UnixMilli() |
| 203 | } |
| 204 | |
| 205 | // returns (realOffset, data, error) |
| 206 | func (entry *CacheEntry) readAt(ctx context.Context, offset int64, size int64, readFull bool) (int64, []byte, error) { |
no test coverage detected