diff options
Diffstat (limited to 'src/core/ext/load_reporting')
| -rw-r--r-- | src/core/ext/load_reporting/load_reporting.c | 101 | ||||
| -rw-r--r-- | src/core/ext/load_reporting/load_reporting.h | 64 | ||||
| -rw-r--r-- | src/core/ext/load_reporting/load_reporting_filter.c | 25 |
3 files changed, 186 insertions, 4 deletions
diff --git a/src/core/ext/load_reporting/load_reporting.c b/src/core/ext/load_reporting/load_reporting.c new file mode 100644 index 0000000000..9081ffce15 --- /dev/null +++ b/src/core/ext/load_reporting/load_reporting.c @@ -0,0 +1,101 @@ +/* + * + * 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 <limits.h> +#include <string.h> + +#include <grpc/support/alloc.h> +#include <grpc/support/sync.h> + +#include "src/core/ext/load_reporting/load_reporting.h" +#include "src/core/ext/load_reporting/load_reporting_filter.h" +#include "src/core/lib/channel/channel_stack_builder.h" +#include "src/core/lib/surface/channel_init.h" + +struct grpc_load_reporting_data { + grpc_load_reporting_fn fn; + void *data; +}; + +grpc_load_reporting_data *grpc_load_reporting_create(grpc_load_reporting_fn fn, + void *data) { + grpc_load_reporting_data *lrd = gpr_malloc(sizeof(grpc_load_reporting_data)); + lrd->fn = fn; + lrd->data = data; + return lrd; +} + +void grpc_load_reporting_destroy(grpc_load_reporting_data *lrd) { + gpr_free(lrd); +} + +void grpc_load_reporting_call(grpc_load_reporting_data *lrd, + const grpc_call_stats *stats) { + if (lrd->fn != NULL) { + lrd->fn(lrd->data, stats); + } +} + +static bool is_load_reporting_enabled(const grpc_channel_args *a) { + if (a == NULL) return false; + for (size_t i = 0; i < a->num_args; i++) { + if (0 == strcmp(a->args[i].key, GRPC_ARG_ENABLE_LOAD_REPORTING)) { + return a->args[i].value.pointer.p != NULL; + } + } + return false; +} + +static bool maybe_add_load_reporting_filter(grpc_channel_stack_builder *builder, + void *arg) { + const grpc_channel_args *args = + grpc_channel_stack_builder_get_channel_arguments(builder); + if (is_load_reporting_enabled(args)) { + return grpc_channel_stack_builder_prepend_filter( + builder, (const grpc_channel_filter *)arg, NULL, NULL); + } + return true; +} + +/* Plugin registration */ + +void grpc_load_reporting_plugin_init(void) { + grpc_channel_init_register_stage(GRPC_CLIENT_CHANNEL, INT_MAX, + maybe_add_load_reporting_filter, + (void *)&grpc_load_reporting_filter); + grpc_channel_init_register_stage(GRPC_SERVER_CHANNEL, INT_MAX, + maybe_add_load_reporting_filter, + (void *)&grpc_load_reporting_filter); +} + +void grpc_load_reporting_plugin_shutdown() {} diff --git a/src/core/ext/load_reporting/load_reporting.h b/src/core/ext/load_reporting/load_reporting.h new file mode 100644 index 0000000000..fcf555da85 --- /dev/null +++ b/src/core/ext/load_reporting/load_reporting.h @@ -0,0 +1,64 @@ +/* + * + * 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 GRPC_CORE_EXT_LOAD_REPORTING_LOAD_REPORTING_H +#define GRPC_CORE_EXT_LOAD_REPORTING_LOAD_REPORTING_H + +#include "src/core/lib/iomgr/closure.h" +#include "src/core/lib/surface/call.h" + +typedef struct grpc_load_reporting_data grpc_load_reporting_data; + +/** Custom function to be called by the load reporting filter. + * + * The \a data pointer is the same as the one passed to \a + * grpc_load_reporting_init. \a stats are the final per-call statistics gathered + * by the gRPC runtime. */ +typedef void (*grpc_load_reporting_fn)(void *data, + const grpc_call_stats *stats); + +/** Register \a fn as the function to be invoked by the load reporting filter, + * passing \a data as its namesake argument. To be called only from a plugin + * init function. */ +grpc_load_reporting_data *grpc_load_reporting_create(grpc_load_reporting_fn fn, + void *data); + +// XXX +void grpc_load_reporting_destroy(grpc_load_reporting_data *lrd); + +/** Invoke the function registered by \a grpc_load_reporting_init, passing it \a + * stats as one of the arguments (see \a load_reporting_fn). */ +void grpc_load_reporting_call(grpc_load_reporting_data *lrd, + const grpc_call_stats *stats); + +#endif /* GRPC_CORE_EXT_LOAD_REPORTING_LOAD_REPORTING_H */ diff --git a/src/core/ext/load_reporting/load_reporting_filter.c b/src/core/ext/load_reporting/load_reporting_filter.c index fc62a4dd0a..31d38251b9 100644 --- a/src/core/ext/load_reporting/load_reporting_filter.c +++ b/src/core/ext/load_reporting/load_reporting_filter.c @@ -31,15 +31,16 @@ * */ +#include <string.h> #include <grpc/support/log.h> +#include "src/core/ext/load_reporting/load_reporting.h" #include "src/core/ext/load_reporting/load_reporting_filter.h" #include "src/core/lib/channel/channel_args.h" -#include "src/core/lib/load_reporting/load_reporting.h" #include "src/core/lib/profiling/timers.h" typedef struct call_data { void *dummy; } call_data; -typedef struct channel_data { void *dummy; } channel_data; +typedef struct channel_data { grpc_load_reporting_data *lrd; } channel_data; /* Constructor for call_data */ static void init_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem, @@ -48,8 +49,9 @@ static void init_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem, /* Destructor for call_data */ static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem, const grpc_call_stats *stats) { + channel_data *chand = elem->channel_data; GPR_TIMER_BEGIN("load_reporting_filter", 0); - grpc_load_reporting_call(stats); + grpc_load_reporting_call(chand->lrd, stats); GPR_TIMER_END("load_reporting_filter", 0); } @@ -58,11 +60,26 @@ static void init_channel_elem(grpc_exec_ctx *exec_ctx, grpc_channel_element *elem, grpc_channel_element_args *args) { GPR_ASSERT(!args->is_last); + + channel_data *chand = elem->channel_data; + memset(chand, 0, sizeof(channel_data)); + + for (size_t i = 0; i < args->channel_args->num_args; i++) { + if (0 == strcmp(args->channel_args->args[i].key, GRPC_ARG_ENABLE_LOAD_REPORTING)) { + chand->lrd = args->channel_args->args[i].value.pointer.p; + GPR_ASSERT(chand->lrd != NULL); + } + } + GPR_ASSERT(chand->lrd != NULL); /* arg actually found */ + } /* Destructor for channel data */ static void destroy_channel_elem(grpc_exec_ctx *exec_ctx, - grpc_channel_element *elem) {} + grpc_channel_element *elem) { + channel_data *chand = elem->channel_data; + grpc_load_reporting_destroy(chand->lrd); +} const grpc_channel_filter grpc_load_reporting_filter = { grpc_call_next_op, |