External Go app request processing.

src/nginext/nxt_go_lib.c

@@ -0,0 +1,194 @@
+
+/*
+ * Copyright (C) Max Romanov
+ * Copyright (C) NGINX, Inc.
+ */
+
+#ifdef NXT_CONFIGURE
+
+#include <stdio.h>
+#include "nxt_go_lib.h"
+
+// Stubs to compile during configure process.
+int
+nxt_go_response_write(nxt_go_request_t r, void *buf, size_t len)
+{
+    return -1;
+}
+
+int
+nxt_go_request_read(nxt_go_request_t r, off_t off, void *dst, size_t dst_len)
+{
+    return -1;
+}
+
+int
+nxt_go_request_read_from(nxt_go_request_t r, off_t off, void *dst,
+    size_t dst_len, void *src, size_t src_len)
+{
+    return -1;
+}
+
+int
+nxt_go_request_close(nxt_go_request_t r)
+{
+    return -1;
+}
+
+int
+nxt_go_request_done(nxt_go_request_t r)
+{
+    return -1;
+}
+
+void
+nxt_go_listen_and_serve()
+{
+}
+
+nxt_go_request_t
+nxt_go_process_port_msg(void *buf, size_t buf_len, void *oob, size_t oob_len)
+{
+    return 0;
+}
+
+#else
+
+#if 0
+
+#include <nxt_runtime.h>
+#include <nxt_master_process.h>
+#include <nxt_application.h>
+
+#include "nxt_go_port.h"
+
+#endif
+
+#include "nxt_go_run_ctx.h"
+#include "nxt_go_log.h"
+#include "nxt_go_port.h"
+
+#include <nxt_main.h>
+#include <nxt_go_gen.h>
+
+int
+nxt_go_response_write(nxt_go_request_t r, void *buf, size_t len)
+{
+    nxt_int_t         rc;
+    nxt_go_run_ctx_t  *ctx;
+
+    if (nxt_slow_path(r == 0)) {
+        return 0;
+    }
+
+    nxt_go_debug("write: %d %.*s", (int) len, (int) len, (char *) buf);
+
+    ctx = (nxt_go_run_ctx_t *) r;
+    rc = nxt_go_ctx_write(ctx, buf, len);
+
+    return rc == NXT_OK ? len : -1;
+}
+
+
+int
+nxt_go_request_read(nxt_go_request_t r, off_t off, void *dst, size_t dst_len)
+{
+    nxt_go_msg_t              *msg;
+    nxt_go_run_ctx_t          *ctx;
+    nxt_app_request_body_t    *b;
+    nxt_app_request_header_t  *h;
+
+    if (nxt_slow_path(r == 0)) {
+        return 0;
+    }
+
+    ctx = (nxt_go_run_ctx_t *) r;
+    b = &ctx->r.body;
+    h = &ctx->r.header;
+
+    if (off >= h->parsed_content_length) {
+        return 0;
+    }
+
+    if (off < b->preread.length) {
+        dst_len = nxt_min(b->preread.length - off, dst_len);
+
+        if (dst_len != 0) {
+            nxt_memcpy(dst, b->preread.start + off, dst_len);
+        }
+
+        return dst_len;
+    }
+
+    /* TODO find msg to read */
+
+    return NXT_AGAIN;
+}
+
+
+int
+nxt_go_request_read_from(nxt_go_request_t r, off_t off, void *dst,
+    size_t dst_len, void *src, size_t src_len)
+{
+    nxt_go_run_ctx_t  *ctx;
+
+    if (nxt_slow_path(r == 0)) {
+        return 0;
+    }
+
+    ctx = (nxt_go_run_ctx_t *) r;
+
+    nxt_go_ctx_add_msg(ctx, src, src_len);
+
+    return nxt_go_request_read(r, off, dst, dst_len);
+}
+
+
+int
+nxt_go_request_close(nxt_go_request_t r)
+{
+    return 0;
+}
+
+
+int
+nxt_go_request_done(nxt_go_request_t r)
+{
+    nxt_int_t          res;
+    nxt_go_run_ctx_t   *ctx;
+    nxt_go_msg_t       *msg, *b;
+
+    if (nxt_slow_path(r == 0)) {
+        return 0;
+    }
+
+    ctx = (nxt_go_run_ctx_t *) r;
+
+    res = nxt_go_ctx_flush(ctx, 1);
+
+    nxt_go_ctx_release_msg(ctx, &ctx->msg);
+
+    msg = ctx->msg.next;
+    while (msg != NULL) {
+        nxt_go_ctx_release_msg(ctx, msg);
+
+        b = msg;
+        msg = b->next;
+
+        free(b);
+    }
+
+    free(ctx);
+
+    return res;
+}
+
+
+nxt_go_request_t
+nxt_go_process_port_msg(void *buf, size_t buf_len, void *oob, size_t oob_len)
+{
+    return nxt_go_port_on_read(buf, buf_len, oob, oob_len);
+}
+
+
+#endif /* NXT_CONFIGURE */