Initial checkin of gRPC to third_party/

third_party/grpc/src/core/transport/chttp2/status_conversion.c

Index: third_party/grpc/src/core/transport/chttp2/status_conversion.c
diff --git a/third_party/grpc/src/core/transport/chttp2/status_conversion.c b/third_party/grpc/src/core/transport/chttp2/status_conversion.c
new file mode 100644
index 0000000000000000000000000000000000000000..bf214b017a21bcf3e5194271a697676f7bc09a26
--- /dev/null
+++ b/third_party/grpc/src/core/transport/chttp2/status_conversion.c
@@ -0,0 +1,109 @@
+/*
+ *
+ * Copyright 2015, 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 "src/core/transport/chttp2/status_conversion.h"
+
+int grpc_chttp2_grpc_status_to_http2_error(grpc_status_code status) {
+  switch (status) {
+    case GRPC_STATUS_OK:
+      return GRPC_CHTTP2_NO_ERROR;
+    case GRPC_STATUS_CANCELLED:
+      return GRPC_CHTTP2_CANCEL;
+    case GRPC_STATUS_RESOURCE_EXHAUSTED:
+      return GRPC_CHTTP2_ENHANCE_YOUR_CALM;
+    case GRPC_STATUS_PERMISSION_DENIED:
+      return GRPC_CHTTP2_INADEQUATE_SECURITY;
+    case GRPC_STATUS_UNAVAILABLE:
+      return GRPC_CHTTP2_REFUSED_STREAM;
+    default:
+      return GRPC_CHTTP2_INTERNAL_ERROR;
+  }
+}
+
+grpc_status_code grpc_chttp2_http2_error_to_grpc_status(
+    grpc_chttp2_error_code error) {
+  switch (error) {
+    case GRPC_CHTTP2_NO_ERROR:
+      /* should never be received */
+      return GRPC_STATUS_INTERNAL;
+    case GRPC_CHTTP2_CANCEL:
+      return GRPC_STATUS_CANCELLED;
+    case GRPC_CHTTP2_ENHANCE_YOUR_CALM:
+      return GRPC_STATUS_RESOURCE_EXHAUSTED;
+    case GRPC_CHTTP2_INADEQUATE_SECURITY:
+      return GRPC_STATUS_PERMISSION_DENIED;
+    case GRPC_CHTTP2_REFUSED_STREAM:
+      return GRPC_STATUS_UNAVAILABLE;
+    default:
+      return GRPC_STATUS_INTERNAL;
+  }
+}
+
+grpc_status_code grpc_chttp2_http2_status_to_grpc_status(int status) {
+  switch (status) {
+    /* these HTTP2 status codes are called out explicitly in status.proto */
+    case 200:
+      return GRPC_STATUS_OK;
+    case 400:
+      return GRPC_STATUS_INVALID_ARGUMENT;
+    case 401:
+      return GRPC_STATUS_UNAUTHENTICATED;
+    case 403:
+      return GRPC_STATUS_PERMISSION_DENIED;
+    case 404:
+      return GRPC_STATUS_NOT_FOUND;
+    case 409:
+      return GRPC_STATUS_ABORTED;
+    case 412:
+      return GRPC_STATUS_FAILED_PRECONDITION;
+    case 429:
+      return GRPC_STATUS_RESOURCE_EXHAUSTED;
+    case 499:
+      return GRPC_STATUS_CANCELLED;
+    case 500:
+      return GRPC_STATUS_UNKNOWN;
+    case 501:
+      return GRPC_STATUS_UNIMPLEMENTED;
+    case 503:
+      return GRPC_STATUS_UNAVAILABLE;
+    case 504:
+      return GRPC_STATUS_DEADLINE_EXCEEDED;
+    /* everything else is unknown */
+    default:
+      return GRPC_STATUS_UNKNOWN;
+  }
+}
+
+int grpc_chttp2_grpc_status_to_http2_status(grpc_status_code status) {
+  return 200;
+}