HAXY

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╭ event.zig ────────────────────────────────────────────────────╮ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ ╰───────────────────────────────────────────────────────────────╯

╭────╮ ╭ clone ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ╮ │http│ ssh │ │ ╰────╯ ╰ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ╯

.. ╭─────────────────────────────────╮ │event.zig │ ╰─────────────────────────────────╯ net.zig

1 const std = @import("std"); 2 const builtin = @import("builtin"); 3 const xit = @import("xit"); 4 const rp = xit.repo; 5 const hash = xit.hash; 6 7 test "simple" { 8 const io = std.testing.io; 9 const allocator = std.testing.allocator; 10 const temp_dir_name = "temp-event-simple"; 11 12 // create the temp dir 13 const cwd = std.Io.Dir.cwd(); 14 var temp_dir_or_err = cwd.openDir(io, temp_dir_name, .{}); 15 if (temp_dir_or_err) |*temp_dir| { 16 temp_dir.close(io); 17 try cwd.deleteTree(io, temp_dir_name); 18 } else |_| {} 19 var temp_dir = try cwd.createDirPathOpen(io, temp_dir_name, .{}); 20 defer cwd.deleteTree(io, temp_dir_name) catch {}; 21 defer temp_dir.close(io); 22 23 const cwd_path = try std.process.currentPathAlloc(io, allocator); 24 defer allocator.free(cwd_path); 25 26 const work_path = try std.fs.path.join(allocator, &.{ cwd_path, temp_dir_name }); 27 defer allocator.free(work_path); 28 29 const repo_opts: rp.RepoOpts(.xit) = .{ .is_test = true }; 30 const Repo = rp.Repo(.xit, repo_opts); 31 var repo = try Repo.init(io, allocator, .{ .path = work_path }); 32 defer repo.deinit(io, allocator); 33 34 // 35 // define test events 36 // 37 38 const AddIssueData = struct { 39 title: []const u8, 40 description: []const u8, 41 tags: []const []const u8, 42 }; 43 44 const id_size: usize = 32; 45 const AddIssueEvent = struct { 46 id: [id_size * 2]u8, 47 kind: []const u8, 48 data: AddIssueData, 49 }; 50 51 const issues_data = [_]AddIssueData{ 52 .{ 53 .title = "Login form clears password on validation error", 54 .description = "Submitting an invalid email address resets the password field. Preserve the field value and show an inline validation message.", 55 .tags = &[_][]const u8{ "bug", "priority-high", "ui" }, 56 }, 57 .{ 58 .title = "Search results ignore archived project filter", 59 .description = "Filtering search results to active projects still returns issues from archived projects. Apply the archived flag before ranking results.", 60 .tags = &[_][]const u8{ "bug", "search", "backend" }, 61 }, 62 .{ 63 .title = "Issue list does not persist selected sort order", 64 .description = "Changing the issue list sort order is lost after refresh. Store the selected sort field and direction with the user's view preferences.", 65 .tags = &[_][]const u8{ "enhancement", "frontend", "preferences" }, 66 }, 67 .{ 68 .title = "Webhook retries stop after transient timeout", 69 .description = "A single gateway timeout marks webhook delivery as failed permanently. Retry transient network errors with exponential backoff.", 70 .tags = &[_][]const u8{ "bug", "webhooks", "reliability" }, 71 }, 72 .{ 73 .title = "CSV export omits labels with commas", 74 .description = "Exported issue rows drop labels that contain commas instead of escaping them. Quote CSV fields according to RFC 4180.", 75 .tags = &[_][]const u8{ "bug", "export", "data-integrity" }, 76 }, 77 }; 78 79 // 80 // insert issues as commits in the repo 81 // 82 83 var prng = std.Random.DefaultPrng.init(std.testing.random_seed); 84 var json: std.Io.Writer.Allocating = .init(std.testing.allocator); 85 defer json.deinit(); 86 87 for (issues_data) |issue_data| { 88 json.clearRetainingCapacity(); 89 90 var id_bytes: [id_size]u8 = undefined; 91 prng.random().bytes(&id_bytes); 92 93 const event = AddIssueEvent{ 94 .id = std.fmt.bytesToHex(id_bytes, .lower), 95 .kind = "add-issue", 96 .data = issue_data, 97 }; 98 99 try std.json.Stringify.value(event, .{}, &json.writer); 100 101 // commit the event into a special branch 102 _ = try repo.commitAtRef(io, allocator, .{ .message = json.written() }, null, .{ .kind = .head, .name = "haxy/meta" }); 103 } 104 105 // 106 // read and parse all of the events from the repo 107 // 108 109 var events: std.ArrayList(AddIssueEvent) = .empty; 110 defer events.deinit(allocator); 111 112 var event_strs: std.ArrayList([]const u8) = .empty; 113 defer event_strs.deinit(allocator); 114 115 var arena = std.heap.ArenaAllocator.init(allocator); 116 defer arena.deinit(); 117 118 const ref_haxy_meta = try repo.readRef(io, .{ .kind = .head, .name = "haxy/meta" }) orelse return error.RefNotFound; 119 var commit_iter = try repo.log(io, allocator, &.{ref_haxy_meta}); 120 defer commit_iter.deinit(); 121 122 // read the message from each commit 123 while (try commit_iter.next()) |commit_object| { 124 defer commit_object.deinit(); 125 126 try commit_object.object_reader.seekTo(commit_object.content.commit.message_position); 127 const message = try commit_object.object_reader.interface.allocRemaining(arena.allocator(), .unlimited); 128 129 try event_strs.append(allocator, message); 130 } 131 132 // parse commit messages as JSON into struct instances. 133 // add events in reverse order so the earliest event is first. 134 for (0..event_strs.items.len) |i| { 135 const event_str = event_strs.items[event_strs.items.len - i - 1]; 136 const event = try std.json.parseFromSliceLeaky(AddIssueEvent, arena.allocator(), event_str, .{}); 137 try events.append(allocator, event); 138 } 139 140 // 141 // process events into the database 142 // 143 144 const Ctx = struct { 145 events: []AddIssueEvent, 146 147 pub fn run(ctx: @This(), cursor: *Repo.DB.Cursor(.read_write)) !void { 148 const moment = try Repo.DB.HashMap(.read_write).init(cursor.*); 149 150 // the map with all of haxy's state and materialized views 151 const haxy_cursor = try moment.putCursor(hash.hashInt(repo_opts.hash, "haxy")); 152 const haxy = try Repo.DB.HashMap(.read_write).init(haxy_cursor); 153 154 // try reading the last event id that was processed in the db 155 var last_event_id_maybe: ?[id_size]u8 = null; 156 if (try haxy.getCursor(hash.hashInt(repo_opts.hash, "last-event-id"))) |last_event_id_cursor| { 157 var last_event_id_buffer: [id_size]u8 = undefined; 158 _ = try last_event_id_cursor.readBytes(&last_event_id_buffer); 159 last_event_id_maybe = last_event_id_buffer; 160 } 161 162 // for each event we want to process... 163 for (ctx.events) |event| { 164 // get the id of the current event as bytes 165 var current_event_id_buffer: [id_size]u8 = undefined; 166 _ = try std.fmt.hexToBytes(&current_event_id_buffer, &event.id); 167 168 // if this event has already been processed, skip it 169 if (try haxy.getCursor(hash.hashInt(repo_opts.hash, "event-id->views"))) |event_id_to_views_cursor| { 170 const event_id_to_views = try Repo.DB.HashMap(.read_only).init(event_id_to_views_cursor); 171 if (null != try event_id_to_views.getCursor(hash.hashInt(repo_opts.hash, &current_event_id_buffer))) { 172 continue; 173 } 174 } 175 176 // map with the views as they appeared when each event was processed. 177 // we can use this to see (and revert) the views to any previous state. 178 const event_id_to_views_cursor = try haxy.putCursor(hash.hashInt(repo_opts.hash, "event-id->views")); 179 const event_id_to_views = try Repo.DB.HashMap(.read_write).init(event_id_to_views_cursor); 180 181 // create a new views map for the current event we are processing 182 var views_cursor = try event_id_to_views.putCursor(hash.hashInt(repo_opts.hash, &current_event_id_buffer)); 183 184 // if there was a previous event, set the views map to have the same value as it. 185 // this efficiently "clones" the map so we make further modifications based on it. 186 if (last_event_id_maybe) |*last_event_id| { 187 if (try event_id_to_views.getCursor(hash.hashInt(repo_opts.hash, last_event_id))) |last_view_cursor| { 188 try views_cursor.write(.{ .slot = last_view_cursor.slot() }); 189 } 190 } 191 192 // process the event into the views map 193 { 194 const views = try Repo.DB.HashMap(.read_write).init(views_cursor); 195 196 if (std.mem.eql(u8, "add-issue", event.kind)) { 197 const issues_cursor = try views.putCursor(hash.hashInt(repo_opts.hash, "issues")); 198 const issues = try Repo.DB.ArrayList(.read_write).init(issues_cursor); 199 200 const issue_cursor = try issues.appendCursor(); 201 const issue = try Repo.DB.HashMap(.read_write).init(issue_cursor); 202 203 try issue.put(hash.hashInt(repo_opts.hash, "id"), .{ .bytes = &event.id }); 204 try issue.put(hash.hashInt(repo_opts.hash, "title"), .{ .bytes = event.data.title }); 205 try issue.put(hash.hashInt(repo_opts.hash, "description"), .{ .bytes = event.data.description }); 206 } else { 207 return error.InvalidEventKind; 208 } 209 } 210 211 // the current event id is now the last one 212 last_event_id_maybe = current_event_id_buffer; 213 214 // prevent any of the data created above from being mutated by future iterations of this loop 215 try cursor.db.freeze(); 216 } 217 218 if (last_event_id_maybe) |*last_event_id| { 219 try haxy.put(hash.hashInt(repo_opts.hash, "last-event-id"), .{ .bytes = last_event_id }); 220 } 221 } 222 }; 223 224 try repo.core.db_file.lock(io, .exclusive); 225 defer repo.core.db_file.unlock(io); 226 227 // create a new transaction in the database that runs the above-defined Ctx function 228 const history = try Repo.DB.ArrayList(.read_write).init(repo.core.db.rootCursor()); 229 try history.appendContext(.{ .slot = try history.getSlot(-1) }, Ctx{ .events = events.items }); 230 231 // read the moment we just created 232 const moment_cursor = try history.getCursor(-1) orelse return error.NotFound; 233 const moment = try Repo.DB.HashMap(.read_only).init(moment_cursor); 234 235 const haxy_cursor = try moment.getCursor(hash.hashInt(repo_opts.hash, "haxy")) orelse return error.NotFound; 236 const haxy = try Repo.DB.HashMap(.read_only).init(haxy_cursor); 237 238 const event_id_to_views_cursor = try haxy.getCursor(hash.hashInt(repo_opts.hash, "event-id->views")) orelse return error.NotFound; 239 const event_id_to_views = try Repo.DB.HashMap(.read_only).init(event_id_to_views_cursor); 240 241 // make sure all events have been processed 242 var count: usize = 0; 243 var event_id_to_views_iter = try event_id_to_views.iterator(); 244 while (try event_id_to_views_iter.next()) |kv_pair_cursor| { 245 _ = try kv_pair_cursor.readKeyValuePair(); 246 count += 1; 247 } 248 try std.testing.expectEqual(issues_data.len, count); 249 } 250