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/*
*
* 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 "src/core/lib/transport/error_utils.h"
#include "src/core/lib/iomgr/error_internal.h"
#include "src/core/lib/transport/status_conversion.h"
static grpc_error *recursively_find_error_with_field(grpc_error *error,
grpc_error_ints which) {
// If the error itself has a status code, return it.
if (grpc_error_get_int(error, which, NULL)) {
return error;
}
if (grpc_error_is_special(error)) return NULL;
// Otherwise, search through its children.
intptr_t key = 0;
while (true) {
grpc_error *child_error = gpr_avl_get(error->errs, (void *)key++);
if (child_error == NULL) break;
grpc_error *result = recursively_find_error_with_field(child_error, which);
if (result != NULL) return result;
}
return NULL;
}
void grpc_error_get_status(grpc_error *error, gpr_timespec deadline,
grpc_status_code *code, const char **msg,
grpc_http2_error_code *http_error) {
// Start with the parent error and recurse through the tree of children
// until we find the first one that has a status code.
grpc_error *found_error =
recursively_find_error_with_field(error, GRPC_ERROR_INT_GRPC_STATUS);
if (found_error == NULL) {
/// If no grpc-status exists, retry through the tree to find a http2 error
/// code
found_error =
recursively_find_error_with_field(error, GRPC_ERROR_INT_HTTP2_ERROR);
}
// If we found an error with a status code above, use that; otherwise,
// fall back to using the parent error.
if (found_error == NULL) found_error = error;
grpc_status_code status = GRPC_STATUS_UNKNOWN;
intptr_t integer;
if (grpc_error_get_int(found_error, GRPC_ERROR_INT_GRPC_STATUS, &integer)) {
status = (grpc_status_code)integer;
} else if (grpc_error_get_int(found_error, GRPC_ERROR_INT_HTTP2_ERROR,
&integer)) {
status = grpc_http2_error_to_grpc_status((grpc_http2_error_code)integer,
deadline);
}
if (code != NULL) *code = status;
if (http_error != NULL) {
if (grpc_error_get_int(found_error, GRPC_ERROR_INT_HTTP2_ERROR, &integer)) {
*http_error = (grpc_http2_error_code)integer;
} else if (grpc_error_get_int(found_error, GRPC_ERROR_INT_GRPC_STATUS,
&integer)) {
*http_error = grpc_status_to_http2_error((grpc_status_code)integer);
} else {
*http_error = found_error == GRPC_ERROR_NONE ? GRPC_HTTP2_NO_ERROR
: GRPC_HTTP2_INTERNAL_ERROR;
}
}
// If the error has a status message, use it. Otherwise, fall back to
// the error description.
if (msg != NULL) {
*msg = grpc_error_get_str(found_error, GRPC_ERROR_STR_GRPC_MESSAGE);
if (*msg == NULL && error != GRPC_ERROR_NONE) {
*msg = grpc_error_get_str(found_error, GRPC_ERROR_STR_DESCRIPTION);
if (*msg == NULL) *msg = "unknown error"; // Just in case.
}
}
if (found_error == NULL) found_error = error;
}
bool grpc_error_has_clear_grpc_status(grpc_error *error) {
if (grpc_error_get_int(error, GRPC_ERROR_INT_GRPC_STATUS, NULL)) {
return true;
}
intptr_t key = 0;
while (true) {
grpc_error *child_error = gpr_avl_get(error->errs, (void *)key++);
if (child_error == NULL) break;
if (grpc_error_has_clear_grpc_status(child_error)) {
return true;
}
}
return false;
}
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