sentry init uses proper cache dir, sets tags

pkg/sentry/main.zig

@@ -14,6 +14,10 @@ pub fn captureEvent(value: Value) ?UUID {
     return uuid;
 }
 
+pub fn setTag(key: []const u8, value: []const u8) void {
+    c.sentry_set_tag_n(key.ptr, key.len, value.ptr, value.len);
+}
+
 test {
     @import("std").testing.refAllDecls(@This());
 }

src/global.zig

@@ -119,7 +119,7 @@ pub const GlobalState = struct {
         internal_os.fixMaxFiles();
 
         // Initialize our crash reporting.
-        try sentry.init();
+        try sentry.init(self.alloc);
 
         // const sentrylib = @import("sentry");
         // if (sentrylib.captureEvent(sentrylib.Value.initMessageEvent(

src/sentry.zig

@@ -1,7 +1,9 @@
 const std = @import("std");
 const assert = std.debug.assert;
+const Allocator = std.mem.Allocator;
 const build_config = @import("build_config.zig");
 const sentry = @import("sentry");
+const internal_os = @import("os/main.zig");
 
 const log = std.log.scoped(.sentry);
 
@@ -12,7 +14,11 @@ const log = std.log.scoped(.sentry);
 /// crash reports and logs, but we only store them locally (see Transport).
 /// It is up to the user to grab the logs and manually send them to us
 /// (or they own Sentry instance) if they want to.
-pub fn init() !void {
+pub fn init(gpa: Allocator) !void {
+    var arena = std.heap.ArenaAllocator.init(gpa);
+    defer arena.deinit();
+    const alloc = arena.allocator();
+
     const transport = sentry.Transport.init(&Transport.send);
     errdefer transport.deinit();
 
@@ -20,17 +26,32 @@ pub fn init() !void {
     errdefer sentry.c.sentry_options_free(opts);
     sentry.c.sentry_options_set_release_n(
         opts,
-        build_config.version_string,
+        build_config.version_string.ptr,
         build_config.version_string.len,
     );
     sentry.c.sentry_options_set_transport(opts, @ptrCast(transport));
 
+    // Determine the Sentry cache directory.
+    const cache_dir = try internal_os.xdg.cache(alloc, .{ .subdir = "ghostty/sentry" });
+    sentry.c.sentry_options_set_database_path_n(
+        opts,
+        cache_dir.ptr,
+        cache_dir.len,
+    );
+
     // Debug logging for Sentry
     sentry.c.sentry_options_set_debug(opts, @intFromBool(true));
 
-    if (sentry.c.sentry_init(opts) != 0) {
-        log.warn("failed to initialize sentry", .{});
-    }
+    // Setup some basic tags that we always want present
+    sentry.setTag("app-runtime", @tagName(build_config.app_runtime));
+    sentry.setTag("font-backend", @tagName(build_config.font_backend));
+    sentry.setTag("renderer", @tagName(build_config.renderer));
+
+    // Initialize
+    if (sentry.c.sentry_init(opts) != 0) return error.SentryInitFailed;
+
+    // Log some information about sentry
+    log.debug("sentry initialized database={s}", .{cache_dir});
 }
 
 /// Process-wide deinitialization of our Sentry client. This ensures all