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raw | patch | inline | side by side (parent: bcce4d5)
raw | patch | inline | side by side (parent: bcce4d5)
| author | Pierre-Yves Ritschard <pyr@spootnik.org> | |
| Tue, 22 Jul 2014 07:39:03 +0000 (09:39 +0200) | ||
| committer | Pierre-Yves Ritschard <pyr@spootnik.org> | |
| Wed, 23 Jul 2014 08:48:04 +0000 (10:48 +0200) |
| configure.ac | patch | blob | history | |
| src/Makefile.am | patch | blob | history | |
| src/utils_crc32.c | [new file with mode: 0644] | patch | blob |
| src/utils_crc32.h | [new file with mode: 0644] | patch | blob |
| src/write_kafka.c | [new file with mode: 0644] | patch | blob |
diff --git a/configure.ac b/configure.ac
index f1c7b8aba1169f3a01f7bdf7993c52d192d4871f..0ba3bf1e03962ce59c583af609f5ac8507fa0cf4 100644 (file)
--- a/configure.ac
+++ b/configure.ac
uint8_t c[8];
double d;
- d = 8.642135e130;
+ d = 8.642135e130;
memcpy ((void *) &i0, (void *) &d, 8);
i1 = i0;
uint8_t c[8];
double d;
- d = 8.642135e130;
+ d = 8.642135e130;
memcpy ((void *) &i0, (void *) &d, 8);
i1 = endianflip (i0);
uint8_t c[8];
double d;
- d = 8.642135e130;
+ d = 8.642135e130;
memcpy ((void *) &i0, (void *) &d, 8);
i1 = intswap (i0);
have_htonll="yes"
AC_DEFINE(HAVE_HTONLL, 1, [Define if the function htonll exists.])
])
-
+
AC_MSG_RESULT([$have_htonll])
# Check for structures
AM_CONDITIONAL([BUILD_FREEBSD],[test "x$x$ac_system" = "xFreeBSD"])
-AM_CONDITIONAL([BUILD_AIX],[test "x$x$ac_system" = "xAIX"])
+AM_CONDITIONAL([BUILD_AIX],[test "x$x$ac_system" = "xAIX"])
if test "x$ac_system" = "xAIX"
then
else
SAVE_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $with_snmp_cflags"
-
+
AC_CHECK_HEADERS(net-snmp/net-snmp-config.h, [], [with_libnetsnmp="no (net-snmp/net-snmp-config.h not found)"])
CPPFLAGS="$SAVE_CPPFLAGS"
then
SAVE_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$with_libowcapi_cppflags"
-
+
AC_CHECK_HEADERS(owcapi.h, [with_libowcapi="yes"], [with_libowcapi="no (owcapi.h not found)"])
CPPFLAGS="$SAVE_CPPFLAGS"
SAVE_CPPFLAGS="$CPPFLAGS"
LDFLAGS="$with_libowcapi_libs"
CPPFLAGS="$with_libowcapi_cppflags"
-
+
AC_CHECK_LIB(owcapi, OW_get, [with_libowcapi="yes"], [with_libowcapi="no (libowcapi not found)"])
LDFLAGS="$SAVE_LDFLAGS"
AM_CONDITIONAL(BUILD_WITH_LIBRABBITMQ, test "x$with_librabbitmq" = "xyes")
# }}}
+# --with-librdkafka {{{
+AC_ARG_WITH(librdkafka, [AS_HELP_STRING([--with-librdkafka@<:@=PREFIX@:>@], [Path to librdkafka.])],
+[
+ if test "x$withval" = "xno" && test "x$withval" != "xyes"
+ then
+ with_librdkafka_cppflags="-I$withval/include"
+ with_librdkafka_ldflags="-L$withval/lib"
+ with_librdkafka="yes"
+ else
+ with_librdkafka="$withval"
+ fi
+],
+[
+ with_librdkafka="yes"
+])
+SAVE_CPPFLAGS="$CPPFLAGS"
+SAVE_LDFLAGS="$LDFLAGS"
+
+if test "x$with_librdkafka" = "xyes"
+then
+ AC_CHECK_HEADERS(librdkafka/rdkafka.h, [with_librdkafka="yes"], [with_librdkafka="no (librdkafka/rdkafka.h not found)"])
+fi
+
+if test "x$with_librdkafka" = "xyes"
+then
+ AC_CHECK_LIB(rdkafka, rd_kafka_new, [with_librdkafka="yes"], [with_librdkafka="no (Symbol 'rd_kafka_new' not found)"])
+fi
+if test "x$with_librdkafka" = "xyes"
+then
+ BUILD_WITH_LIBRDKAFKA_CPPFLAGS="$with_librdkafka_cppflags"
+ BUILD_WITH_LIBRDKAFKA_LDFLAGS="$with_librdkafka_ldflags"
+ BUILD_WITH_LIBRDKAFKA_LIBS="-lrdkafka"
+ AC_SUBST(BUILD_WITH_LIBRDKAFKA_CPPFLAGS)
+ AC_SUBST(BUILD_WITH_LIBRDKAFKA_LDFLAGS)
+ AC_SUBST(BUILD_WITH_LIBRDKAFKA_LIBS)
+ AC_DEFINE(HAVE_LIBRDKAFKA, 1, [Define if librdkafka is present and usable.])
+fi
+CPPFLAGS="$SAVE_CPPFLAGS"
+LDFLAGS="$SAVE_LDFLAGS"
+AM_CONDITIONAL(BUILD_WITH_LIBRDKAFKA, test "x$with_librdkafka" = "xyes")
+
+# }}}
+
# --with-librouteros {{{
AC_ARG_WITH(librouteros, [AS_HELP_STRING([--with-librouteros@<:@=PREFIX@:>@], [Path to librouteros.])],
[
LDFLAGS="$SAVE_LDFLAGS"
if test "x$with_libtokyotyrant" = "xyes"
-then
+then
BUILD_WITH_LIBTOKYOTYRANT_CPPFLAGS="$with_libtokyotyrant_cppflags"
BUILD_WITH_LIBTOKYOTYRANT_LDFLAGS="$with_libtokyotyrant_ldflags"
BUILD_WITH_LIBTOKYOTYRANT_LIBS="$with_libtokyotyrant_libs"
AC_PLUGIN([wireless], [$plugin_wireless], [Wireless statistics])
AC_PLUGIN([write_graphite], [yes], [Graphite / Carbon output plugin])
AC_PLUGIN([write_http], [$with_libcurl], [HTTP output plugin])
+AC_PLUGIN([write_kafka], [$with_librdkafka], [Kafka output plugin])
AC_PLUGIN([write_mongodb], [$with_libmongoc], [MongoDB output plugin])
AC_PLUGIN([write_redis], [$with_libcredis], [Redis output plugin])
AC_PLUGIN([write_riemann], [$have_protoc_c], [Riemann output plugin])
libpq . . . . . . . . $with_libpq
libpthread . . . . . $with_libpthread
librabbitmq . . . . . $with_librabbitmq
+ librdkafka . . . . . $with_librdkafka
librouteros . . . . . $with_librouteros
librrd . . . . . . . $with_librrd
libsensors . . . . . $with_libsensors
wireless . . . . . . $enable_wireless
write_graphite . . . $enable_write_graphite
write_http . . . . . $enable_write_http
+ write_kafka . . . . . $enable_write_kafka
write_mongodb . . . . $enable_write_mongodb
write_redis . . . . . $enable_write_redis
write_riemann . . . . $enable_write_riemann
diff --git a/src/Makefile.am b/src/Makefile.am
index a9d858232a9ec547f42e52d335b1d3e5ff2da5eb..5959c64fcd96f85a3519950d278c7d5214d27393 100644 (file)
--- a/src/Makefile.am
+++ b/src/Makefile.am
collectd_tg_DEPENDENCIES = libcollectdclient/libcollectdclient.la
-pkglib_LTLIBRARIES =
+pkglib_LTLIBRARIES =
-BUILT_SOURCES =
+BUILT_SOURCES =
CLEANFILES =
if BUILD_PLUGIN_AGGREGATION
cpu_la_SOURCES = cpu.c
cpu_la_CFLAGS = $(AM_CFLAGS)
cpu_la_LDFLAGS = -module -avoid-version
-cpu_la_LIBADD =
+cpu_la_LIBADD =
if BUILD_WITH_LIBKSTAT
cpu_la_LIBADD += -lkstat
endif
disk_la_SOURCES = disk.c
disk_la_CFLAGS = $(AM_CFLAGS)
disk_la_LDFLAGS = -module -avoid-version
-disk_la_LIBADD =
+disk_la_LIBADD =
if BUILD_WITH_LIBKSTAT
disk_la_LIBADD += -lkstat
endif
disk_la_LDFLAGS += -framework IOKit
endif
if BUILD_WITH_LIBSTATGRAB
-disk_la_CFLAGS += $(BUILD_WITH_LIBSTATGRAB_CFLAGS)
+disk_la_CFLAGS += $(BUILD_WITH_LIBSTATGRAB_CFLAGS)
disk_la_LIBADD += $(BUILD_WITH_LIBSTATGRAB_LDFLAGS)
endif
if BUILD_WITH_PERFSTAT
pkglib_LTLIBRARIES += olsrd.la
olsrd_la_SOURCES = olsrd.c
olsrd_la_LDFLAGS = -module -avoid-version
-olsrd_la_LIBADD =
+olsrd_la_LIBADD =
if BUILD_WITH_LIBSOCKET
olsrd_la_LIBADD += -lsocket
endif
collectd_DEPENDENCIES += write_http.la
endif
+if BUILD_PLUGIN_WRITE_KAFKA
+pkglib_LTLIBRARIES += write_kafka.la
+write_kafka_la_SOURCES = write_kafka.c \
+ utils_format_graphite.c utils_format_graphite.h \
+ utils_format_json.c utils_format_json.h \
+ utils_cmd_putval.c utils_cmd_putval.h \
+ utils_crc32.c utils_crc32.h
+write_kafka_la_LDFLAGS = -module -avoid-version $(BUILD_WITH_LIBRDKAFKA_LDFLAGS)
+write_kafka_la_LIBADD = $(BUILD_WITH_LIBRDKAFKA_LIBS)
+collectd_LDADD += "-dlopen" write_kafka.la
+collectd_DEPENDENCIES += write_kafka.la
+endif
+
if BUILD_PLUGIN_WRITE_MONGODB
pkglib_LTLIBRARIES += write_mongodb.la
write_mongodb_la_SOURCES = write_mongodb.c
diff --git a/src/utils_crc32.c b/src/utils_crc32.c
--- /dev/null
+++ b/src/utils_crc32.c
@@ -0,0 +1,110 @@
+/*
+ * COPYRIGHT (C) 1986 Gary S. Brown. You may use this program, or
+ * code or tables extracted from it, as desired without restriction.
+ *
+ * First, the polynomial itself and its table of feedback terms. The
+ * polynomial is
+ * X^32+X^26+X^23+X^22+X^16+X^12+X^11+X^10+X^8+X^7+X^5+X^4+X^2+X^1+X^0
+ *
+ * Note that we take it "backwards" and put the highest-order term in
+ * the lowest-order bit. The X^32 term is "implied"; the LSB is the
+ * X^31 term, etc. The X^0 term (usually shown as "+1") results in
+ * the MSB being 1
+ *
+ * Note that the usual hardware shift register implementation, which
+ * is what we're using (we're merely optimizing it by doing eight-bit
+ * chunks at a time) shifts bits into the lowest-order term. In our
+ * implementation, that means shifting towards the right. Why do we
+ * do it this way? Because the calculated CRC must be transmitted in
+ * order from highest-order term to lowest-order term. UARTs transmit
+ * characters in order from LSB to MSB. By storing the CRC this way
+ * we hand it to the UART in the order low-byte to high-byte; the UART
+ * sends each low-bit to hight-bit; and the result is transmission bit
+ * by bit from highest- to lowest-order term without requiring any bit
+ * shuffling on our part. Reception works similarly
+ *
+ * The feedback terms table consists of 256, 32-bit entries. Notes
+ *
+ * The table can be generated at runtime if desired; code to do so
+ * is shown later. It might not be obvious, but the feedback
+ * terms simply represent the results of eight shift/xor opera
+ * tions for all combinations of data and CRC register values
+ *
+ * The values must be right-shifted by eight bits by the "updcrc
+ * logic; the shift must be unsigned (bring in zeroes). On some
+ * hardware you could probably optimize the shift in assembler by
+ * using byte-swap instructions
+ * polynomial $edb88320
+ */
+
+#include <sys/types.h>
+
+u_int32_t crc32_buffer(const u_char *, size_t);
+static unsigned int crc32_tab[] = {
+ 0x00000000L, 0x77073096L, 0xee0e612cL, 0x990951baL, 0x076dc419L,
+ 0x706af48fL, 0xe963a535L, 0x9e6495a3L, 0x0edb8832L, 0x79dcb8a4L,
+ 0xe0d5e91eL, 0x97d2d988L, 0x09b64c2bL, 0x7eb17cbdL, 0xe7b82d07L,
+ 0x90bf1d91L, 0x1db71064L, 0x6ab020f2L, 0xf3b97148L, 0x84be41deL,
+ 0x1adad47dL, 0x6ddde4ebL, 0xf4d4b551L, 0x83d385c7L, 0x136c9856L,
+ 0x646ba8c0L, 0xfd62f97aL, 0x8a65c9ecL, 0x14015c4fL, 0x63066cd9L,
+ 0xfa0f3d63L, 0x8d080df5L, 0x3b6e20c8L, 0x4c69105eL, 0xd56041e4L,
+ 0xa2677172L, 0x3c03e4d1L, 0x4b04d447L, 0xd20d85fdL, 0xa50ab56bL,
+ 0x35b5a8faL, 0x42b2986cL, 0xdbbbc9d6L, 0xacbcf940L, 0x32d86ce3L,
+ 0x45df5c75L, 0xdcd60dcfL, 0xabd13d59L, 0x26d930acL, 0x51de003aL,
+ 0xc8d75180L, 0xbfd06116L, 0x21b4f4b5L, 0x56b3c423L, 0xcfba9599L,
+ 0xb8bda50fL, 0x2802b89eL, 0x5f058808L, 0xc60cd9b2L, 0xb10be924L,
+ 0x2f6f7c87L, 0x58684c11L, 0xc1611dabL, 0xb6662d3dL, 0x76dc4190L,
+ 0x01db7106L, 0x98d220bcL, 0xefd5102aL, 0x71b18589L, 0x06b6b51fL,
+ 0x9fbfe4a5L, 0xe8b8d433L, 0x7807c9a2L, 0x0f00f934L, 0x9609a88eL,
+ 0xe10e9818L, 0x7f6a0dbbL, 0x086d3d2dL, 0x91646c97L, 0xe6635c01L,
+ 0x6b6b51f4L, 0x1c6c6162L, 0x856530d8L, 0xf262004eL, 0x6c0695edL,
+ 0x1b01a57bL, 0x8208f4c1L, 0xf50fc457L, 0x65b0d9c6L, 0x12b7e950L,
+ 0x8bbeb8eaL, 0xfcb9887cL, 0x62dd1ddfL, 0x15da2d49L, 0x8cd37cf3L,
+ 0xfbd44c65L, 0x4db26158L, 0x3ab551ceL, 0xa3bc0074L, 0xd4bb30e2L,
+ 0x4adfa541L, 0x3dd895d7L, 0xa4d1c46dL, 0xd3d6f4fbL, 0x4369e96aL,
+ 0x346ed9fcL, 0xad678846L, 0xda60b8d0L, 0x44042d73L, 0x33031de5L,
+ 0xaa0a4c5fL, 0xdd0d7cc9L, 0x5005713cL, 0x270241aaL, 0xbe0b1010L,
+ 0xc90c2086L, 0x5768b525L, 0x206f85b3L, 0xb966d409L, 0xce61e49fL,
+ 0x5edef90eL, 0x29d9c998L, 0xb0d09822L, 0xc7d7a8b4L, 0x59b33d17L,
+ 0x2eb40d81L, 0xb7bd5c3bL, 0xc0ba6cadL, 0xedb88320L, 0x9abfb3b6L,
+ 0x03b6e20cL, 0x74b1d29aL, 0xead54739L, 0x9dd277afL, 0x04db2615L,
+ 0x73dc1683L, 0xe3630b12L, 0x94643b84L, 0x0d6d6a3eL, 0x7a6a5aa8L,
+ 0xe40ecf0bL, 0x9309ff9dL, 0x0a00ae27L, 0x7d079eb1L, 0xf00f9344L,
+ 0x8708a3d2L, 0x1e01f268L, 0x6906c2feL, 0xf762575dL, 0x806567cbL,
+ 0x196c3671L, 0x6e6b06e7L, 0xfed41b76L, 0x89d32be0L, 0x10da7a5aL,
+ 0x67dd4accL, 0xf9b9df6fL, 0x8ebeeff9L, 0x17b7be43L, 0x60b08ed5L,
+ 0xd6d6a3e8L, 0xa1d1937eL, 0x38d8c2c4L, 0x4fdff252L, 0xd1bb67f1L,
+ 0xa6bc5767L, 0x3fb506ddL, 0x48b2364bL, 0xd80d2bdaL, 0xaf0a1b4cL,
+ 0x36034af6L, 0x41047a60L, 0xdf60efc3L, 0xa867df55L, 0x316e8eefL,
+ 0x4669be79L, 0xcb61b38cL, 0xbc66831aL, 0x256fd2a0L, 0x5268e236L,
+ 0xcc0c7795L, 0xbb0b4703L, 0x220216b9L, 0x5505262fL, 0xc5ba3bbeL,
+ 0xb2bd0b28L, 0x2bb45a92L, 0x5cb36a04L, 0xc2d7ffa7L, 0xb5d0cf31L,
+ 0x2cd99e8bL, 0x5bdeae1dL, 0x9b64c2b0L, 0xec63f226L, 0x756aa39cL,
+ 0x026d930aL, 0x9c0906a9L, 0xeb0e363fL, 0x72076785L, 0x05005713L,
+ 0x95bf4a82L, 0xe2b87a14L, 0x7bb12baeL, 0x0cb61b38L, 0x92d28e9bL,
+ 0xe5d5be0dL, 0x7cdcefb7L, 0x0bdbdf21L, 0x86d3d2d4L, 0xf1d4e242L,
+ 0x68ddb3f8L, 0x1fda836eL, 0x81be16cdL, 0xf6b9265bL, 0x6fb077e1L,
+ 0x18b74777L, 0x88085ae6L, 0xff0f6a70L, 0x66063bcaL, 0x11010b5cL,
+ 0x8f659effL, 0xf862ae69L, 0x616bffd3L, 0x166ccf45L, 0xa00ae278L,
+ 0xd70dd2eeL, 0x4e048354L, 0x3903b3c2L, 0xa7672661L, 0xd06016f7L,
+ 0x4969474dL, 0x3e6e77dbL, 0xaed16a4aL, 0xd9d65adcL, 0x40df0b66L,
+ 0x37d83bf0L, 0xa9bcae53L, 0xdebb9ec5L, 0x47b2cf7fL, 0x30b5ffe9L,
+ 0xbdbdf21cL, 0xcabac28aL, 0x53b39330L, 0x24b4a3a6L, 0xbad03605L,
+ 0xcdd70693L, 0x54de5729L, 0x23d967bfL, 0xb3667a2eL, 0xc4614ab8L,
+ 0x5d681b02L, 0x2a6f2b94L, 0xb40bbe37L, 0xc30c8ea1L, 0x5a05df1bL,
+ 0x2d02ef8dL
+};
+
+/* Return a 32-bit CRC of the contents of the buffer. */
+
+u_int32_t
+crc32_buffer(const u_char *s, size_t len)
+{
+ size_t i;
+ u_int32_t ret;
+
+ ret = 0;
+ for (i = 0; i < len; i++)
+ ret = crc32_tab[(ret ^ s[i]) & 0xff] ^ (ret >> 8);
+ return ret;
+}
diff --git a/src/utils_crc32.h b/src/utils_crc32.h
--- /dev/null
+++ b/src/utils_crc32.h
@@ -0,0 +1,27 @@
+/**
+ * collectd - src/utils_crc32.h
+ *
+ * Copyright (C) 2014 Pierre-Yves Ritschard
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Authors:
+ * Pierre-Yves Ritschard <pyr at spootnik.org>
+ */
+
+#ifndef UTILS_CRC32_H
+#define UTILS_CRC32_H 1
+
+u_int32_t crc32_buffer(const u_char *, size_t);
+
+#endif
diff --git a/src/write_kafka.c b/src/write_kafka.c
--- /dev/null
+++ b/src/write_kafka.c
@@ -0,0 +1,411 @@
+/**
+ * collectd - src/write_kafka.c
+ *
+ * Copyright (C) 2014 Pierre-Yves Ritschard
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Authors:
+ * Pierre-Yves Ritschard <pyr at spootnik.org>
+ */
+
+#include "collectd.h"
+#include "plugin.h"
+#include "common.h"
+#include "configfile.h"
+#include "utils_cache.h"
+#include "utils_cmd_putval.h"
+#include "utils_format_graphite.h"
+#include "utils_format_json.h"
+#include "utils_crc32.h"
+#include "riemann.pb-c.h"
+
+#include <sys/types.h>
+#include <librdkafka/rdkafka.h>
+#include <pthread.h>
+#include <zlib.h>
+
+struct kafka_topic_context {
+#define KAFKA_FORMAT_COMMAND 1
+#define KAFKA_FORMAT_GRAPHITE 2
+#define KAFKA_FORMAT_JSON 3
+ u_int8_t format;
+ unsigned int graphite_flags;
+ _Bool store_rates;
+ rd_kafka_topic_conf_t *conf;
+ rd_kafka_topic_t *topic;
+ rd_kafka_t *kafka;
+ int has_key;
+ u_int32_t key;
+ char *prefix;
+ char *postfix;
+ char escape_char;
+ char *topic_name;
+};
+
+static int kafka_write(const data_set_t *, const value_list_t *, user_data_t *);
+static int32_t kafka_partition(const rd_kafka_topic_t *, const void *, size_t,
+ int32_t, void *, void *);
+
+static int32_t kafka_partition(const rd_kafka_topic_t *rkt,
+ const void *keydata, size_t keylen,
+ int32_t partition_cnt, void *p, void *m)
+{
+ u_int32_t key = *((u_int32_t *)keydata );
+
+ return key % partition_cnt;
+}
+
+static int kafka_write(const data_set_t *ds, /* {{{ */
+ const value_list_t *vl,
+ user_data_t *ud)
+{
+ int status = 0;
+ u_int32_t key;
+ char buffer[8192];
+ size_t bfree = sizeof(buffer);
+ size_t bfill = 0;
+ size_t blen = 0;
+ struct kafka_topic_context *ctx = ud->data;
+
+ if ((ds == NULL) || (vl == NULL) || (ctx == NULL))
+ return EINVAL;
+
+ bzero(buffer, sizeof(buffer));
+
+ switch (ctx->format) {
+ case KAFKA_FORMAT_COMMAND:
+ status = create_putval(buffer, sizeof(buffer), ds, vl);
+ if (status != 0) {
+ ERROR("write_kafka plugin: create_putval failed with status %i.",
+ status);
+ return status;
+ }
+ blen = strlen(buffer);
+ break;
+ case KAFKA_FORMAT_JSON:
+
+ format_json_initialize(buffer, &bfill, &bfree);
+ format_json_value_list(buffer, &bfill, &bfree, ds, vl,
+ ctx->store_rates);
+ format_json_finalize(buffer, &bfill, &bfree);
+ blen = strlen(buffer);
+ break;
+ case KAFKA_FORMAT_GRAPHITE:
+ status = format_graphite(buffer, sizeof(buffer), ds, vl,
+ ctx->prefix, ctx->postfix, ctx->escape_char,
+ ctx->graphite_flags);
+ if (status != 0) {
+ ERROR("write_kafka plugin: format_graphite failed with status %i.",
+ status);
+ return status;
+ }
+ blen = strlen(buffer);
+ break;
+ default:
+ ERROR("write_kafka plugin: invalid format %i.", ctx->format);
+ return -1;
+ }
+
+ /*
+ * We partition our stream by metric name
+ */
+ if (ctx->has_key)
+ key = ctx->key;
+ else
+ key = rand();
+
+ rd_kafka_produce(ctx->topic, RD_KAFKA_PARTITION_UA,
+ RD_KAFKA_MSG_F_COPY, buffer, blen,
+ &key, sizeof(key), NULL);
+
+ return status;
+} /* }}} int kafka_write */
+
+static void kafka_topic_context_free(void *p) /* {{{ */
+{
+ struct kafka_topic_context *ctx = p;
+
+ if (ctx == NULL)
+ return;
+
+ if (ctx->topic_name != NULL)
+ sfree(ctx->topic_name);
+ if (ctx->topic != NULL)
+ rd_kafka_topic_destroy(ctx->topic);
+ if (ctx->conf != NULL)
+ rd_kafka_topic_conf_destroy(ctx->conf);
+
+ sfree(ctx);
+} /* }}} void kafka_topic_context_free */
+
+static void kafka_config_topic(rd_kafka_conf_t *conf, oconfig_item_t *ci) /* {{{ */
+{
+ int status;
+ int i;
+ struct kafka_topic_context *tctx;
+ char *key;
+ char *val;
+ char callback_name[DATA_MAX_NAME_LEN];
+ char errbuf[1024];
+ user_data_t ud;
+ oconfig_item_t *child;
+ rd_kafka_conf_res_t ret;
+
+ if ((tctx = calloc(1, sizeof (*tctx))) == NULL) {
+ ERROR ("write_kafka plugin: calloc failed.");
+ return;
+ }
+
+ tctx->escape_char = '.';
+ tctx->store_rates = 1;
+
+ if ((tctx->kafka = rd_kafka_new(RD_KAFKA_PRODUCER, conf,
+ errbuf, sizeof(errbuf))) == NULL) {
+ sfree(tctx);
+ ERROR("write_kafka plugin: cannot create kafka handle.");
+ return;
+ }
+ conf = NULL;
+
+ if ((tctx->conf = rd_kafka_topic_conf_new()) == NULL) {
+ rd_kafka_destroy(tctx->kafka);
+ sfree(tctx);
+ ERROR ("write_kafka plugin: cannot create topic configuration.");
+ return;
+ }
+
+ if (ci->values_num != 1) {
+ WARNING("kafka topic name needed.");
+ goto errout;
+ }
+
+ if (ci->values[0].type != OCONFIG_TYPE_STRING) {
+ WARNING("kafka topic needs a string argument.");
+ goto errout;
+ }
+
+ if ((tctx->topic_name = strdup(ci->values[0].value.string)) == NULL) {
+ ERROR("write_kafka plugin: cannot copy topic name.");
+ goto errout;
+ }
+
+ for (i = 0; i < ci->children_num; i++) {
+ /*
+ * The code here could be simplified but makes room
+ * for easy adding of new options later on.
+ */
+ child = &ci->children[i];
+ status = 0;
+
+ if (strcasecmp ("Property", child->key) == 0) {
+ if (child->values_num != 2) {
+ WARNING("kafka properties need both a key and a value.");
+ goto errout;
+ }
+ if (child->values[0].type != OCONFIG_TYPE_STRING ||
+ child->values[1].type != OCONFIG_TYPE_STRING) {
+ WARNING("kafka properties needs string arguments.");
+ goto errout;
+ }
+ key = child->values[0].value.string;
+ val = child->values[0].value.string;
+ ret = rd_kafka_topic_conf_set(tctx->conf,key, val,
+ errbuf, sizeof(errbuf));
+ if (ret != RD_KAFKA_CONF_OK) {
+ WARNING("cannot set kafka topic property %s to %s: %s.",
+ key, val, errbuf);
+ goto errout;
+ }
+
+ } else if (strcasecmp ("Key", child->key) == 0) {
+ char *tmp_buf = NULL;
+ status = cf_util_get_string(child, &tmp_buf);
+ if (status != 0) {
+ WARNING("write_kafka plugin: invalid key supplied");
+ break;
+ }
+
+ if (strcasecmp(tmp_buf, "Random") != 0) {
+ tctx->has_key = 1;
+ tctx->key = crc32_buffer((u_char *)tmp_buf, strlen(tmp_buf));
+ }
+ sfree(tmp_buf);
+
+ } else if (strcasecmp ("Format", child->key) == 0) {
+ status = cf_util_get_string(child, &key);
+ if (status != 0)
+ goto errout;
+
+ assert(key != NULL);
+
+ if (strcasecmp(key, "Command") == 0) {
+
+ tctx->format = KAFKA_FORMAT_COMMAND;
+
+ } else if (strcasecmp(key, "Graphite") == 0) {
+ tctx->format = KAFKA_FORMAT_GRAPHITE;
+
+ } else if (strcasecmp(key, "Json") == 0) {
+ tctx->format = KAFKA_FORMAT_JSON;
+
+ } else {
+ WARNING ("write_kafka plugin: Invalid format string: %s",
+ key);
+ }
+ sfree(key);
+
+ } else if (strcasecmp ("StoreRates", child->key) == 0) {
+ status = cf_util_get_boolean (child, &tctx->store_rates);
+ (void) cf_util_get_flag (child, &tctx->graphite_flags,
+ GRAPHITE_STORE_RATES);
+
+ } else if (strcasecmp ("GraphiteSeparateInstances", child->key) == 0) {
+ status = cf_util_get_flag (child, &tctx->graphite_flags,
+ GRAPHITE_SEPARATE_INSTANCES);
+
+ } else if (strcasecmp ("GraphiteAlwaysAppendDS", child->key) == 0) {
+ status = cf_util_get_flag (child, &tctx->graphite_flags,
+ GRAPHITE_ALWAYS_APPEND_DS);
+
+ } else if (strcasecmp ("GraphitePrefix", child->key) == 0) {
+ status = cf_util_get_string (child, &tctx->prefix);
+ } else if (strcasecmp ("GraphitePostfix", child->key) == 0) {
+ status = cf_util_get_string (child, &tctx->postfix);
+ } else if (strcasecmp ("GraphiteEscapeChar", child->key) == 0) {
+ char *tmp_buff = NULL;
+ status = cf_util_get_string (child, &tmp_buff);
+ if (strlen (tmp_buff) > 1)
+ WARNING ("write_kafka plugin: The option \"GraphiteEscapeChar\" handles "
+ "only one character. Others will be ignored.");
+ tctx->escape_char = tmp_buff[0];
+ sfree (tmp_buff);
+ } else {
+ WARNING ("write_kafka plugin: Invalid directive: %s.", child->key);
+ }
+
+ if (status != 0)
+ break;
+ }
+
+ rd_kafka_topic_conf_set_partitioner_cb(tctx->conf, kafka_partition);
+ rd_kafka_topic_conf_set_opaque(tctx->conf, tctx);
+
+ if ((tctx->topic = rd_kafka_topic_new(tctx->kafka, tctx->topic_name,
+ tctx->conf)) == NULL) {
+ ERROR("write_kafka plugin: cannot create topic.");
+ goto errout;
+ }
+ tctx->conf = NULL;
+
+ ssnprintf(callback_name, sizeof(callback_name),
+ "write_kafka/%s", tctx->topic_name);
+
+ ud.data = tctx;
+ ud.free_func = kafka_topic_context_free;
+
+ status = plugin_register_write (callback_name, kafka_write, &ud);
+ if (status != 0) {
+ WARNING ("write_kafka plugin: plugin_register_write (\"%s\") "
+ "failed with status %i.",
+ callback_name, status);
+ goto errout;
+ }
+ return;
+ errout:
+ if (conf != NULL)
+ rd_kafka_conf_destroy(conf);
+ if (tctx->kafka != NULL)
+ rd_kafka_destroy(tctx->kafka);
+ if (tctx->topic != NULL)
+ rd_kafka_topic_destroy(tctx->topic);
+ if (tctx->topic_name != NULL)
+ free(tctx->topic_name);
+ if (tctx->conf != NULL)
+ rd_kafka_topic_conf_destroy(tctx->conf);
+ sfree(tctx);
+} /* }}} int kafka_config_topic */
+
+static int kafka_config(oconfig_item_t *ci) /* {{{ */
+{
+ int i;
+ oconfig_item_t *child;
+ rd_kafka_conf_t *conf;
+ rd_kafka_conf_t *cloned;
+ rd_kafka_conf_res_t ret;
+ char errbuf[1024];
+
+ if ((conf = rd_kafka_conf_new()) == NULL) {
+ WARNING("cannot allocate kafka configuration.");
+ return -1;
+ }
+
+ for (i = 0; i < ci->children_num; i++) {
+ child = &ci->children[i];
+
+ if (strcasecmp("Topic", child->key) == 0) {
+ if ((cloned = rd_kafka_conf_dup(conf)) == NULL) {
+ WARNING("write_kafka plugin: cannot allocate memory for kafka config");
+ goto errout;
+ }
+ kafka_config_topic (cloned, child);
+ } else if (strcasecmp(child->key, "Property") == 0) {
+ char *key = NULL;
+ char *val = NULL;
+
+ if (child->values_num != 2) {
+ WARNING("kafka properties need both a key and a value.");
+ goto errout;
+ }
+ if (child->values[0].type != OCONFIG_TYPE_STRING ||
+ child->values[1].type != OCONFIG_TYPE_STRING) {
+ WARNING("kafka properties needs string arguments.");
+ goto errout;
+ }
+ if ((key = strdup(child->values[0].value.string)) == NULL) {
+ WARNING("cannot allocate memory for attribute key.");
+ goto errout;
+ }
+ if ((val = strdup(child->values[1].value.string)) == NULL) {
+ WARNING("cannot allocate memory for attribute value.");
+ goto errout;
+ }
+ ret = rd_kafka_conf_set(conf, key, val, errbuf, sizeof(errbuf));
+ if (ret != RD_KAFKA_CONF_OK) {
+ WARNING("cannot set kafka property %s to %s: %s",
+ key, val, errbuf);
+ goto errout;
+ }
+ sfree(key);
+ sfree(val);
+ } else {
+ WARNING ("write_kafka plugin: Ignoring unknown "
+ "configuration option \"%s\" at top level.",
+ child->key);
+ }
+ }
+ if (conf != NULL)
+ rd_kafka_conf_destroy(conf);
+ return (0);
+ errout:
+ if (conf != NULL)
+ rd_kafka_conf_destroy(conf);
+ return -1;
+} /* }}} int kafka_config */
+
+void module_register(void)
+{
+ plugin_register_complex_config ("write_kafka", kafka_config);
+}
+
+/* vim: set sw=8 sts=8 ts=8 noet : */