Address review comments

reviewable/pr11237/r2
Yuchen Zeng 8 years ago
parent 01cc75087e
commit 94c5776143
  1. 162
      src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.c
  2. 2
      src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h

@ -185,44 +185,47 @@ static void on_hostbyname_done_cb(void *arg, int status, int timeouts,
sizeof(grpc_lb_address) * (*lb_addresses)->num_addresses);
for (i = prev_naddr; i < (*lb_addresses)->num_addresses; i++) {
memset(&(*lb_addresses)->addresses[i], 0, sizeof(grpc_lb_address));
if (hostent->h_addrtype == AF_INET6) {
size_t addr_len = sizeof(struct sockaddr_in6);
struct sockaddr_in6 addr;
memcpy(&addr.sin6_addr, hostent->h_addr_list[i - prev_naddr],
sizeof(struct in6_addr));
addr.sin6_family = (sa_family_t)hostent->h_addrtype;
addr.sin6_port = hr->port;
grpc_lb_addresses_set_address(
*lb_addresses, i, &addr, addr_len,
hr->is_balancer /* is_balancer */,
hr->is_balancer ? strdup(hr->host) : NULL /* balancer_name */,
NULL /* user_data */);
char output[INET6_ADDRSTRLEN];
ares_inet_ntop(AF_INET6, &addr.sin6_addr, output, INET6_ADDRSTRLEN);
gpr_log(GPR_DEBUG,
"c-ares resolver gets a AF_INET6 result: \n"
" addr: %s\n port: %d\n sin6_scope_id: %d\n",
output, ntohs(hr->port), addr.sin6_scope_id);
} else { /* hostent->h_addrtype == AF_INET6 */
size_t addr_len = sizeof(struct sockaddr_in);
struct sockaddr_in addr;
memcpy(&addr.sin_addr, hostent->h_addr_list[i - prev_naddr],
sizeof(struct in_addr));
addr.sin_family = (sa_family_t)hostent->h_addrtype;
addr.sin_port = hr->port;
grpc_lb_addresses_set_address(
*lb_addresses, i, &addr, addr_len,
hr->is_balancer /* is_balancer */,
hr->is_balancer ? strdup(hr->host) : NULL /* balancer_name */,
NULL /* user_data */);
char output[INET_ADDRSTRLEN];
ares_inet_ntop(AF_INET, &addr.sin_addr, output, INET_ADDRSTRLEN);
gpr_log(GPR_DEBUG,
"c-ares resolver gets a AF_INET result: \n"
" addr: %s\n port: %d\n",
output, ntohs(hr->port));
switch (hostent->h_addrtype) {
case AF_INET6: {
size_t addr_len = sizeof(struct sockaddr_in6);
struct sockaddr_in6 addr;
memcpy(&addr.sin6_addr, hostent->h_addr_list[i - prev_naddr],
sizeof(struct in6_addr));
addr.sin6_family = (sa_family_t)hostent->h_addrtype;
addr.sin6_port = hr->port;
grpc_lb_addresses_set_address(
*lb_addresses, i, &addr, addr_len,
hr->is_balancer /* is_balancer */,
hr->is_balancer ? strdup(hr->host) : NULL /* balancer_name */,
NULL /* user_data */);
char output[INET6_ADDRSTRLEN];
ares_inet_ntop(AF_INET6, &addr.sin6_addr, output, INET6_ADDRSTRLEN);
gpr_log(GPR_DEBUG,
"c-ares resolver gets a AF_INET6 result: \n"
" addr: %s\n port: %d\n sin6_scope_id: %d\n",
output, ntohs(hr->port), addr.sin6_scope_id);
break;
}
case AF_INET: {
size_t addr_len = sizeof(struct sockaddr_in);
struct sockaddr_in addr;
memcpy(&addr.sin_addr, hostent->h_addr_list[i - prev_naddr],
sizeof(struct in_addr));
addr.sin_family = (sa_family_t)hostent->h_addrtype;
addr.sin_port = hr->port;
grpc_lb_addresses_set_address(
*lb_addresses, i, &addr, addr_len,
hr->is_balancer /* is_balancer */,
hr->is_balancer ? strdup(hr->host) : NULL /* balancer_name */,
NULL /* user_data */);
char output[INET_ADDRSTRLEN];
ares_inet_ntop(AF_INET, &addr.sin_addr, output, INET_ADDRSTRLEN);
gpr_log(GPR_DEBUG,
"c-ares resolver gets a AF_INET result: \n"
" addr: %s\n port: %d\n",
output, ntohs(hr->port));
break;
}
}
}
} else { /* r->lb_addrs_out */
@ -242,36 +245,40 @@ static void on_hostbyname_done_cb(void *arg, int status, int timeouts,
sizeof(grpc_resolved_address) * (*addresses)->naddrs);
for (i = prev_naddr; i < (*addresses)->naddrs; i++) {
memset(&(*addresses)->addrs[i], 0, sizeof(grpc_resolved_address));
if (hostent->h_addrtype == AF_INET6) {
(*addresses)->addrs[i].len = sizeof(struct sockaddr_in6);
struct sockaddr_in6 *addr =
(struct sockaddr_in6 *)&(*addresses)->addrs[i].addr;
addr->sin6_family = (sa_family_t)hostent->h_addrtype;
addr->sin6_port = hr->port;
char output[INET6_ADDRSTRLEN];
memcpy(&addr->sin6_addr, hostent->h_addr_list[i - prev_naddr],
sizeof(struct in6_addr));
ares_inet_ntop(AF_INET6, &addr->sin6_addr, output, INET6_ADDRSTRLEN);
gpr_log(GPR_DEBUG,
"c-ares resolver gets a AF_INET6 result: \n"
" addr: %s\n port: %d\n sin6_scope_id: %d\n",
output, ntohs(hr->port), addr->sin6_scope_id);
} else { /* hostent->h_addrtype == AF_INET6 */
(*addresses)->addrs[i].len = sizeof(struct sockaddr_in);
struct sockaddr_in *addr =
(struct sockaddr_in *)&(*addresses)->addrs[i].addr;
memcpy(&addr->sin_addr, hostent->h_addr_list[i - prev_naddr],
sizeof(struct in_addr));
addr->sin_family = (sa_family_t)hostent->h_addrtype;
addr->sin_port = hr->port;
char output[INET_ADDRSTRLEN];
ares_inet_ntop(AF_INET, &addr->sin_addr, output, INET_ADDRSTRLEN);
gpr_log(GPR_DEBUG,
"c-ares resolver gets a AF_INET result: \n"
" addr: %s\n port: %d\n",
output, ntohs(hr->port));
switch (hostent->h_addrtype) {
case AF_INET6: {
(*addresses)->addrs[i].len = sizeof(struct sockaddr_in6);
struct sockaddr_in6 *addr =
(struct sockaddr_in6 *)&(*addresses)->addrs[i].addr;
addr->sin6_family = (sa_family_t)hostent->h_addrtype;
addr->sin6_port = hr->port;
char output[INET6_ADDRSTRLEN];
memcpy(&addr->sin6_addr, hostent->h_addr_list[i - prev_naddr],
sizeof(struct in6_addr));
ares_inet_ntop(AF_INET6, &addr->sin6_addr, output,
INET6_ADDRSTRLEN);
gpr_log(GPR_DEBUG,
"c-ares resolver gets a AF_INET6 result: \n"
" addr: %s\n port: %d\n sin6_scope_id: %d\n",
output, ntohs(hr->port), addr->sin6_scope_id);
break;
}
case AF_INET: {
(*addresses)->addrs[i].len = sizeof(struct sockaddr_in);
struct sockaddr_in *addr =
(struct sockaddr_in *)&(*addresses)->addrs[i].addr;
memcpy(&addr->sin_addr, hostent->h_addr_list[i - prev_naddr],
sizeof(struct in_addr));
addr->sin_family = (sa_family_t)hostent->h_addrtype;
addr->sin_port = hr->port;
char output[INET_ADDRSTRLEN];
ares_inet_ntop(AF_INET, &addr->sin_addr, output, INET_ADDRSTRLEN);
gpr_log(GPR_DEBUG,
"c-ares resolver gets a AF_INET result: \n"
" addr: %s\n port: %d\n",
output, ntohs(hr->port));
break;
}
}
}
}
@ -317,7 +324,6 @@ static void on_srv_query_done_cb(void *arg, int status, int timeouts,
grpc_ares_ev_driver_start(&exec_ctx, r->ev_driver);
}
}
if (reply != NULL) {
ares_free_data(reply);
}
@ -337,11 +343,11 @@ static void on_srv_query_done_cb(void *arg, int status, int timeouts,
grpc_exec_ctx_finish(&exec_ctx);
}
void grpc_dns_lookup_ares(
grpc_exec_ctx *exec_ctx, const char *dns_server, const char *name,
const char *default_port, grpc_pollset_set *interested_parties,
grpc_closure *on_done,
void **addrs, bool is_lb_addrs_out) {
void grpc_dns_lookup_ares(grpc_exec_ctx *exec_ctx, const char *dns_server,
const char *name, const char *default_port,
grpc_pollset_set *interested_parties,
grpc_closure *on_done, void **addrs,
bool check_grpclb) {
grpc_error *error = GRPC_ERROR_NONE;
/* TODO(zyc): Enable tracing after #9603 is checked in */
/* if (grpc_dns_trace) {
@ -376,8 +382,8 @@ void grpc_dns_lookup_ares(
gpr_mu_init(&r->mu);
r->ev_driver = ev_driver;
r->on_done = on_done;
r->lb_addrs_out = is_lb_addrs_out;
if (is_lb_addrs_out) {
r->lb_addrs_out = check_grpclb;
if (check_grpclb) {
r->addrs_out.lb_addrs = (grpc_lb_addresses **)addrs;
} else {
r->addrs_out.addrs = (grpc_resolved_addresses **)addrs;
@ -428,7 +434,7 @@ void grpc_dns_lookup_ares(
grpc_ares_hostbyname_request *hr = create_hostbyname_request(
r, host, strhtons(port), false /* is_balancer */);
ares_gethostbyname(*channel, hr->host, AF_INET, on_hostbyname_done_cb, hr);
if (is_lb_addrs_out) {
if (check_grpclb) {
/* Query the SRV record */
grpc_ares_request_ref(r);
char *service_name;
@ -455,7 +461,7 @@ void grpc_resolve_address_ares_impl(grpc_exec_ctx *exec_ctx, const char *name,
grpc_resolved_addresses **addrs) {
grpc_dns_lookup_ares(exec_ctx, NULL /* dns_server */, name, default_port,
interested_parties, on_done, (void **)addrs,
false /* is_lb_addrs_out */);
false /* check_grpclb */);
}
void (*grpc_resolve_address_ares)(

@ -63,7 +63,7 @@ void grpc_dns_lookup_ares(grpc_exec_ctx *exec_ctx, const char *dns_server,
const char *addr, const char *default_port,
grpc_pollset_set *interested_parties,
grpc_closure *on_done, void **addresses,
bool is_lb_addrs_out);
bool check_grpclb);
/* Initialize gRPC ares wrapper. Must be called at least once before
grpc_resolve_address_ares(). */

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