Channel establishment

2 files changed, 199 insertions, 0 deletions

diff --git a/test/core/util/passthru_endpoint.c b/test/core/util/passthru_endpoint.c
new file mode 100644
index 0000000000..a47baeb637
--- /dev/null
+++ b/test/core/util/passthru_endpoint.c
@@ -0,0 +1,158 @@
+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "test/core/util/passthru_endpoint.h"
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+
+typedef struct passthru_endpoint passthru_endpoint;
+
+typedef struct {
+  grpc_endpoint base;
+  passthru_endpoint *parent;
+  gpr_slice_buffer read_buffer;
+  gpr_slice_buffer *on_read_out;
+  grpc_closure *on_read;
+} half;
+
+struct passthru_endpoint {
+  gpr_mu mu;
+  int halves;
+  bool shutdown;
+  half client;
+  half server;
+};
+
+static void me_read(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
+                    gpr_slice_buffer *slices, grpc_closure *cb) {
+  half *m = (half *)ep;
+  gpr_mu_lock(&m->parent->mu);
+  if (m->parent->shutdown) {
+    grpc_exec_ctx_enqueue(exec_ctx, cb, false, NULL);
+  } else
+  if (m->read_buffer.count > 0) {
+    gpr_slice_buffer_swap(&m->read_buffer, slices);
+    grpc_exec_ctx_enqueue(exec_ctx, cb, true, NULL);
+  } else {
+    m->on_read = cb;
+    m->on_read_out = slices;
+  }
+  gpr_mu_unlock(&m->parent->mu);
+}
+
+static half *other_half(half *h) {
+  if (h == &h->parent->client)
+    return &h->parent->server;
+  return &h->parent->client;
+}
+
+static void me_write(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
+                     gpr_slice_buffer *slices, grpc_closure *cb) {
+  half *m = other_half((half *)ep);
+  gpr_mu_lock(&m->parent->mu);
+  bool ok= true;
+  if (m->parent->shutdown) {
+   ok = false; 
+  }
+  else if (m->on_read != NULL) {
+    gpr_slice_buffer_addn(m->on_read_out, slices->slices, slices->count);
+    grpc_exec_ctx_enqueue(exec_ctx, m->on_read, true, NULL);
+    m->on_read = NULL;
+  } else {
+    gpr_slice_buffer_addn(&m->read_buffer, slices->slices, slices->count);
+  }
+  gpr_mu_unlock(&m->parent->mu);
+  grpc_exec_ctx_enqueue(exec_ctx, cb, ok, NULL);
+}
+
+static void me_add_to_pollset(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
+                              grpc_pollset *pollset) {}
+
+static void me_add_to_pollset_set(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
+                                  grpc_pollset_set *pollset) {}
+
+static void me_shutdown(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep) {
+  half *m = (half*)ep;
+  gpr_mu_lock(&m->parent->mu);
+  m->parent->shutdown = true;
+  if (m->on_read) {
+    grpc_exec_ctx_enqueue(exec_ctx, m->on_read, false, NULL);
+    m->on_read = NULL;
+  }
+  m = other_half(m);
+  if (m->on_read) {
+    grpc_exec_ctx_enqueue(exec_ctx, m->on_read, false, NULL);
+    m->on_read = NULL;
+  }
+  gpr_mu_unlock(&m->parent->mu);
+}
+
+static void me_destroy(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep) {
+  passthru_endpoint *p = ((half*)ep)->parent;
+  gpr_mu_lock(&p->mu);
+  if (0 == --p->halves) {
+    gpr_mu_unlock(&p->mu);
+    gpr_mu_destroy(&p->mu);
+    gpr_slice_buffer_destroy(&p->client.read_buffer);
+    gpr_slice_buffer_destroy(&p->server.read_buffer);
+    gpr_free(p);
+  } else {
+    gpr_mu_unlock(&p->mu);
+  }
+}
+
+static char *me_get_peer(grpc_endpoint *ep) {
+  return gpr_strdup("fake:mock_endpoint");
+}
+
+static const grpc_endpoint_vtable vtable = {
+    me_read,     me_write,   me_add_to_pollset, me_add_to_pollset_set,
+    me_shutdown, me_destroy, me_get_peer,
+};
+
+static void half_init(half *m) {
+  m->base.vtable = &vtable;
+  gpr_slice_buffer_init(&m->read_buffer);
+  m->on_read = NULL;
+}
+
+void grpc_passthru_endpoint_create(grpc_endpoint **client, grpc_endpoint **server) {
+  passthru_endpoint *m = gpr_malloc(sizeof(*m));
+  half_init(&m->client);
+  half_init(&m->server);
+  gpr_mu_init(&m->mu);
+  *client = &m->client.base;
+  *server = &m->server.base;
+}
+
diff --git a/test/core/util/passthru_endpoint.h b/test/core/util/passthru_endpoint.h
new file mode 100644
index 0000000000..ba075d508a
--- /dev/null
+++ b/test/core/util/passthru_endpoint.h
@@ -0,0 +1,41 @@
+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef MOCK_ENDPOINT_H
+#define MOCK_ENDPOINT_H
+
+#include "src/core/lib/iomgr/endpoint.h"
+
+void grpc_passthru_endpoint_create(grpc_endpoint **client, grpc_endpoint **server);
+
+#endif