HAXY

▄▀▀▀ ▄ ▄▀▀▀▀▀▀▄ ▀▀▀▀▀▄ ▀▀▀▀▀▀▀▀▀▀ ▄▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▄ ▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀ ▄▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▄▀▀▀ ▀▀▀▀▀▄▀▀▀▀ ▀ ▀▀▀▀▀▀▄▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▄ ▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▄ ▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄ ▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄ ▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▄ ▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀▀▀ ▀▀ ▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄ ▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▄▄▄▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▄ ▀▀▀▀▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▄▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀▀▀▀▀▀▀▀ ▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀▀▀▀▀▀▀ ▀▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀ ▀▀▀▀ ▀▀▀▀▀▀▀▀▀ ▀▀▀▀▄▀▀▀▀▀▀ ▀ ▀▀ ▀▀▀▀▀▀▀▀▀ ▀▀▀▄▀▀▀▀▀▀▀ ▀ ▀▀ ▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀ ▀▄ ▀▀ ▀▀▀▀▀▀ ▀▀▀▀▀▀▀ ▀▀ ▀▀▀ ▀▀▀▀▀▀ ▀▀▀▀▀▀▄ ▀▀ ▀▀ ▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀ ▀ ▀▀▀ ▀▀▀▀▀▀▄▀ ▀▀▀▀▀▀▀ ▀ ▀▀▀ ▄▀▀▀▀▀▄▄ ▀▀▀▀▄▄▀▀ ▀ ▀▀▀ ▀▀▀▀▀▀▀▀▄ ▀▀▀▄▀▀▀ ▀▀ ▀▀▀ ▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀ ▀▀ ▀▀▀▀▀▀▀▀▀▀▀▄▀ ▀▀▀▀▀▀▀▀▄ ▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀ ▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▄▀▀▀▀▀ ▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀ ▀▄ ▄▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄ ▀▀▄▀▀▀▄▀▀▀▀ ▀▀▀▀▄ ▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀ ▀▀ ▀▀▀▀▀ ▀▀▀

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

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

.. Attachment.zig Comment.zig Discussion.zig Fork.zig Issue.zig Patch.zig PatchRev.zig ╭─────────────────────────────────╮ │Repo.zig │ ╰─────────────────────────────────╯ User.zig

1 const std = @import("std"); 2 const evt = @import("../event.zig"); 3 const xit = @import("xit"); 4 const hash = xit.hash; 5 6 user_id: []const u8, 7 name: []const u8, 8 description: []const u8, 9 read_access: Access = .private, 10 write_access: Access = .private, 11 read_user_ids: []const u8 = "", 12 write_user_ids: []const u8 = "", 13 14 // what the db stores: the event's data plus the commit-derived fields 15 pub const Record = struct { 16 event: Self, 17 removed: bool = false, 18 created_order: u64 = 0, 19 updated_order: u64 = 0, 20 21 // a repo's key in the name index. it's unique per owner, so the read side 22 // resolves the url's username to its user id first. 23 pub fn indexKey(self: Record, allocator: std.mem.Allocator) ![]const u8 { 24 return std.fmt.allocPrint(allocator, "{s}/{s}", .{ self.event.user_id, self.event.name }); 25 } 26 }; 27 28 const Self = @This(); 29 30 pub const Access = enum { 31 private, 32 public, 33 }; 34 35 pub const name_max_len = 32; 36 37 // the moment keys `evt.merge` reads and writes for this kind 38 pub const merge_policy: evt.MergePolicy = .target_wins; 39 pub const record_map_key = "event-id->repo"; 40 pub const all_id_set_key = "repo-id-set"; 41 pub const active_id_set_key = "active-repo-id-set"; 42 pub const name_index_key = "name->repo-id"; 43 44 pub fn validateName(name: []const u8) !void { 45 if (name.len == 0) return error.NameEmpty; 46 if (name.len > name_max_len) return error.NameTooLong; 47 if (std.mem.eql(u8, name, ".") or std.mem.eql(u8, name, "..")) return error.InvalidName; 48 49 for (name) |c| { 50 if (!std.ascii.isAlphanumeric(c) and c != '-' and c != '_' and c != '.') 51 return error.InvalidName; 52 } 53 } 54 55 fn validateUserIds(user_ids: []const u8) !void { 56 var lines = std.mem.tokenizeScalar(u8, user_ids, '\n'); 57 while (lines.next()) |id| _ = try evt.parseEventId(id); 58 } 59 60 pub fn consume( 61 comptime DB: type, 62 comptime hash_kind: hash.HashKind, 63 haxy_moment: DB.HashMap(.read_write), 64 event_id: *const [evt.event_id_size]u8, 65 record_maybe: ?Record, 66 arena: *std.heap.ArenaAllocator, 67 _: ?[]const u8, 68 ) !void { 69 const repo_key = hash.hashInt(hash_kind, event_id); 70 71 const event_id_to_repo_cursor = try haxy_moment.putCursor(hash.hashInt(hash_kind, "event-id->repo")); 72 const event_id_to_repo = try DB.HashMap(.read_write).init(event_id_to_repo_cursor); 73 74 const name_to_repo_id_cursor = try haxy_moment.putCursor(hash.hashInt(hash_kind, "name->repo-id")); 75 const name_to_repo_id = try DB.HashMap(.read_write).init(name_to_repo_id_cursor); 76 77 var existing_record_maybe: ?Record = null; 78 const existing_cursor_maybe = try event_id_to_repo.getCursor(repo_key); 79 if (existing_cursor_maybe) |existing_cursor| { 80 const existing_repo = try DB.HashMap(.read_only).init(existing_cursor); 81 existing_record_maybe = try evt.read(Record, DB, hash_kind, arena, existing_repo); 82 } 83 84 var record_to_write = record_maybe orelse try evt.removedRecord(Record, DB, hash_kind, haxy_moment.readOnly(), existing_record_maybe); 85 86 if (!record_to_write.removed) { 87 try validateName(record_to_write.event.name); 88 try validateUserIds(record_to_write.event.read_user_ids); 89 try validateUserIds(record_to_write.event.write_user_ids); 90 } 91 92 const user_id_to_repo_id_set_cursor = try haxy_moment.putCursor(hash.hashInt(hash_kind, "user-id->repo-id-set")); 93 const user_id_to_repo_id_set = try DB.HashMap(.read_write).init(user_id_to_repo_id_set_cursor); 94 95 if (existing_record_maybe) |existing_record| { 96 // updates preserve the original creation metadata 97 record_to_write.created_order = existing_record.created_order; 98 const order_key = evt.orderKeyDesc(existing_record.created_order, event_id); 99 100 // drop the old active indexes; active values are re-added below 101 if (!existing_record.removed) { 102 const existing_path = try existing_record.indexKey(arena.allocator()); 103 _ = try name_to_repo_id.remove(hash.hashInt(hash_kind, existing_path)); 104 105 const old_user_repos_cursor = try user_id_to_repo_id_set.putCursor(hash.hashInt(hash_kind, existing_record.event.user_id)); 106 const old_user_repos = try DB.SortedSet(.read_write).init(old_user_repos_cursor); 107 _ = try old_user_repos.remove(&order_key); 108 } 109 } 110 111 const repo_cursor = try event_id_to_repo.putCursor(repo_key); 112 const repo = try DB.HashMap(.read_write).init(repo_cursor); 113 try evt.upsert(Record, DB, hash_kind, repo, record_to_write); 114 try evt.indexEvent(DB, hash_kind, haxy_moment, event_id, .repo, existing_record_maybe, record_to_write); 115 116 const order_key = evt.orderKeyDesc(record_to_write.created_order, event_id); 117 118 // the id set retains removed records so merges can carry removals 119 if (existing_cursor_maybe == null) { 120 const repo_id_set_cursor = try haxy_moment.putCursor(hash.hashInt(hash_kind, all_id_set_key)); 121 const repo_id_set = try DB.SortedSet(.read_write).init(repo_id_set_cursor); 122 try repo_id_set.put(&order_key); 123 } 124 125 const active = try DB.SortedSet(.read_write).init(try haxy_moment.putCursor(hash.hashInt(hash_kind, active_id_set_key))); 126 if (record_to_write.removed) { 127 _ = try active.remove(&order_key); 128 } else { 129 try active.put(&order_key); 130 const repo_path = try record_to_write.indexKey(arena.allocator()); 131 try name_to_repo_id.put(hash.hashInt(hash_kind, repo_path), .{ .bytes = event_id }); 132 133 // each user's repos are ordered by creation time, newest first 134 const user_repos_cursor = try user_id_to_repo_id_set.putCursor(hash.hashInt(hash_kind, record_to_write.event.user_id)); 135 const user_repos = try DB.SortedSet(.read_write).init(user_repos_cursor); 136 try user_repos.put(&order_key); 137 } 138 } 139 140 // a repo plus its event id (the id is the on-disk repo directory name, so the 141 // caller can locate the working repo under <server>/repos/<hex event id>). 142 pub const RepoWithId = struct { 143 repo: Record, 144 event_id: [evt.event_id_size]u8, 145 }; 146 147 // read a repo by its owner's name and repo name. the owner name is resolved to 148 // a user id via name->user-id (the repo index is keyed by "user-id/repo-name"), 149 // matching the /repo/username/reponame url. 150 pub fn readByOwnerAndName( 151 comptime DB: type, 152 comptime hash_kind: hash.HashKind, 153 haxy_moment: DB.HashMap(.read_only), 154 arena: *std.heap.ArenaAllocator, 155 owner_name: []const u8, 156 repo_name: []const u8, 157 ) !?RepoWithId { 158 // owner name -> user id 159 const name_to_user_id_cursor = try haxy_moment.getCursor(hash.hashInt(hash_kind, "name->user-id")) orelse return null; 160 const name_to_user_id = try DB.HashMap(.read_only).init(name_to_user_id_cursor); 161 const user_id_cursor = try name_to_user_id.getCursor(hash.hashInt(hash_kind, owner_name)) orelse return null; 162 var user_id: [evt.event_id_size]u8 = undefined; 163 _ = try user_id_cursor.readBytes(&user_id); 164 165 // "user-id/repo-name" -> repo event id 166 const repo_path = try (Record{ .event = .{ .user_id = user_id[0..], .name = repo_name, .description = "" } }).indexKey(arena.allocator()); 167 const name_to_repo_id_cursor = try haxy_moment.getCursor(hash.hashInt(hash_kind, "name->repo-id")) orelse return null; 168 const name_to_repo_id = try DB.HashMap(.read_only).init(name_to_repo_id_cursor); 169 const repo_id_cursor = try name_to_repo_id.getCursor(hash.hashInt(hash_kind, repo_path)) orelse return null; 170 var repo_id: [evt.event_id_size]u8 = undefined; 171 _ = try repo_id_cursor.readBytes(&repo_id); 172 173 const event_id_to_repo_cursor = try haxy_moment.getCursor(hash.hashInt(hash_kind, "event-id->repo")) orelse return null; 174 const event_id_to_repo = try DB.HashMap(.read_only).init(event_id_to_repo_cursor); 175 const repo_cursor = try event_id_to_repo.getCursor(hash.hashInt(hash_kind, &repo_id)) orelse return null; 176 const repo_map = try DB.HashMap(.read_only).init(repo_cursor); 177 return .{ .repo = try evt.read(Record, DB, hash_kind, arena, repo_map), .event_id = repo_id }; 178 } 179 180 pub fn readById( 181 comptime DB: type, 182 comptime hash_kind: hash.HashKind, 183 haxy_moment: DB.HashMap(.read_only), 184 arena: *std.heap.ArenaAllocator, 185 id: []const u8, 186 ) !?Record { 187 const records_cursor = try haxy_moment.getCursor(hash.hashInt(hash_kind, record_map_key)) orelse return null; 188 const records = try DB.HashMap(.read_only).init(records_cursor); 189 const record_cursor = try records.getCursor(hash.hashInt(hash_kind, id)) orelse return null; 190 return try evt.read(Record, DB, hash_kind, arena, try DB.HashMap(.read_only).init(record_cursor)); 191 } 192