68 lines
2.1 KiB
Markdown
68 lines
2.1 KiB
Markdown
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```zig title="Zig"
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const std = @import("std");
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const kreuzberg = @import("kreuzberg");
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const StatefulProcessor = struct {
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call_count: std.atomic.Value(usize) = std.atomic.Value(usize).init(0),
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pub fn process(self: *StatefulProcessor, result: [*c]const u8, config: [*c]const u8) !void {
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_ = result;
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_ = config;
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_ = self.call_count.fetchAdd(1, .acq_rel);
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}
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pub fn processing_stage(self: *StatefulProcessor) [*c]const u8 {
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_ = self;
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return "Middle";
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}
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pub fn should_process(self: *StatefulProcessor, result: [*c]const u8, config: [*c]const u8) i32 {
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_ = self;
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_ = result;
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_ = config;
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return 1;
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}
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pub fn estimated_duration_ms(self: *StatefulProcessor, result: [*c]const u8) u64 {
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_ = self;
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_ = result;
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return 1;
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}
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pub fn priority(self: *StatefulProcessor) i32 {
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_ = self;
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return 50;
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}
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};
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pub fn main() !void {
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var instance = StatefulProcessor{};
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var vtable = kreuzberg.make_post_processor_vtable(StatefulProcessor, &instance);
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vtable.name_fn = struct {
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fn thunk(user_data: ?*anyopaque, out_name: ?*?[*c]u8) callconv(.C) void {
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_ = user_data;
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if (out_name) |ptr| ptr.* = @constCast("stateful-processor");
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}
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}.thunk;
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vtable.version_fn = struct {
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fn thunk(user_data: ?*anyopaque, out_version: ?*?[*c]u8) callconv(.C) void {
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_ = user_data;
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if (out_version) |ptr| ptr.* = @constCast("1.0.0");
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}
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}.thunk;
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vtable.shutdown_fn = struct {
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fn thunk(user_data: ?*anyopaque, out_error: ?*?[*c]u8) callconv(.C) i32 {
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_ = out_error;
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const self: *StatefulProcessor = @ptrCast(@alignCast(user_data));
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const count = self.call_count.load(.acquire);
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std.log.info("stateful-processor invoked {d} times", .{count});
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return 0;
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}
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}.thunk;
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var out_error: ?[*c]u8 = null;
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_ = kreuzberg.register_post_processor("stateful-processor", vtable, &instance, &out_error);
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}
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```
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