Fix ring buffer

src/dispatchers/BlockUpdate.zig

@@ -0,0 +1,50 @@
+const std = @import("std");
+
+const msg_queue = @import("../msg_queue/root.zig");
+const models = @import("../models/root.zig");
+
+const Self = @This();
+
+const log = std.log.scoped(.block_update_dispatcher);
+
+pub const Config = struct {
+    capacity: usize,
+};
+
+allocator: std.mem.Allocator,
+
+config: *const Config,
+queue: *msg_queue.MsgQueueUnmanaged(models.BlockUpdateMsg),
+stream: ?std.net.Stream = null,
+
+pub fn init(
+    allocator: std.mem.Allocator,
+    config: *const Config,
+    queue: *msg_queue.MsgQueueUnmanaged(models.BlockUpdateMsg),
+    stream: std.net.Stream,
+) Self {
+    return .{
+        .allocator = allocator,
+        .config = config,
+        .queue = queue,
+        .stream = stream,
+    };
+}
+
+fn send(self: *Self, update: *const models.BlockUpdateMsg) !void {
+    var buf: [models.BlockUpdateMsg.csv_max_len]u8 = undefined;
+    const stream = self.stream.?;
+    const csv = try update.toCsv(&buf);
+    try stream.writeAll(csv);
+    try stream.writeAll(&.{'\n'});
+}
+
+pub fn start(self: *Self) !void {
+    const buf = try self.allocator.alloc(models.BlockUpdateMsg, self.queue.capacity());
+    defer self.allocator.free(buf);
+
+    while (true) {
+        const updates = try self.queue.tryDequeueAll(buf);
+        for (updates) |*update| try self.send(update);
+    }
+}

src/dispatchers/root.zig

@@ -0,0 +1 @@
+pub const BlockUpdate = @import("BlockUpdate.zig");