| 130 | } |
| 131 | |
| 132 | func (t *ProgressEmitter) computeProgressUpdates() []progressUpdate { |
| 133 | var progressUpdates []progressUpdate |
| 134 | for id, conn := range t.connections { |
| 135 | for _, folder := range t.foldersByConns[id] { |
| 136 | pullers, ok := t.registry[folder] |
| 137 | if !ok { |
| 138 | // There's never been any puller registered for this folder yet |
| 139 | continue |
| 140 | } |
| 141 | |
| 142 | state, ok := t.sentDownloadStates[id] |
| 143 | if !ok { |
| 144 | state = &sentDownloadState{ |
| 145 | folderStates: make(map[string]*sentFolderDownloadState), |
| 146 | } |
| 147 | t.sentDownloadStates[id] = state |
| 148 | } |
| 149 | |
| 150 | activePullers := make([]*sharedPullerState, 0, len(pullers)) |
| 151 | for _, puller := range pullers { |
| 152 | if puller.folder != folder || puller.file.IsSymlink() || puller.file.IsDirectory() || len(puller.file.Blocks) <= t.minBlocks { |
| 153 | continue |
| 154 | } |
| 155 | activePullers = append(activePullers, puller) |
| 156 | } |
| 157 | |
| 158 | // For every new puller that hasn't yet been seen, it will send all the blocks the puller has available |
| 159 | // For every existing puller, it will check for new blocks, and send update for the new blocks only |
| 160 | // For every puller that we've seen before but is no longer there, we will send a forget message |
| 161 | updates := state.update(folder, activePullers) |
| 162 | |
| 163 | if len(updates) > 0 { |
| 164 | progressUpdates = append(progressUpdates, progressUpdate{ |
| 165 | conn: conn, |
| 166 | folder: folder, |
| 167 | updates: updates, |
| 168 | }) |
| 169 | } |
| 170 | } |
| 171 | } |
| 172 | |
| 173 | // Clean up sentDownloadStates for devices which we are no longer connected to. |
| 174 | for id := range t.sentDownloadStates { |
| 175 | _, ok := t.connections[id] |
| 176 | if !ok { |
| 177 | // Null out outstanding entries for device |
| 178 | delete(t.sentDownloadStates, id) |
| 179 | } |
| 180 | } |
| 181 | |
| 182 | // If a folder was unshared from some device, tell it that all temp files |
| 183 | // are now gone. |
| 184 | for id, state := range t.sentDownloadStates { |
| 185 | // For each of the folders that the state is aware of, |
| 186 | // try to match it with a shared folder we've discovered above, |
| 187 | nextFolder: |
| 188 | for _, folder := range state.folders() { |
| 189 | for _, existingFolder := range t.foldersByConns[id] { |