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Add cmap service

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Cmap service is application developer interface to icmap and it is
direct replacement for confdb.

Signed-off-by: Jan Friesse <jfriesse@redhat.com>
Reviewed-by: Steven Dake <sdake@redhat.com>
This commit is contained in:
Jan Friesse 2011-12-13 17:47:07 +01:00
parent 525e6a6ebe
commit a2824073c7
5 changed files with 1165 additions and 2 deletions
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334
include/corosync/cmap.h Normal file
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@ -0,0 +1,334 @@
/*
* Copyright (c) 2011 Red Hat, Inc.
*
* All rights reserved.
*
* Author: Jan Friesse (jfriesse@redhat.com)
*
* This software licensed under BSD license, the text of which follows:
*
* 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 the Red Hat, 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 COROSYNC_CMAP_H_DEFINED
#define COROSYNC_CMAP_H_DEFINED
#include <corosync/corotypes.h>
#include <corosync/hdb.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* @addtogroup cmap_corosync
*
* @{
*/
/*
* Handle for cmap service connection
*/
typedef uint64_t cmap_handle_t;
/*
* Handle for cmap iterator
*/
typedef uint64_t cmap_iter_handle_t;
/*
* Handle for cmap tracking function
*/
typedef uint64_t cmap_track_handle_t;
/*
* Maximum length of key in cmap
*/
#define CMAP_KEYNAME_MAXLEN 255
/*
* Minumum length of key in cmap
*/
#define CMAP_KEYNAME_MINLEN 3
/*
* Tracking values.
*/
#define CMAP_TRACK_ADD 4
#define CMAP_TRACK_DELETE 1
#define CMAP_TRACK_MODIFY 2
/*
* Whole prefix is tracked, instead of key only (so "totem." tracking means that
* "totem.nodeid", "totem.version", ... applies). This value is also never returned
* inside of callback and is used only in adding track
*/
#define CMAP_TRACK_PREFIX 8
/*
* Possible types of value. Binary is raw data without trailing zero with given length
*/
typedef enum {
CMAP_VALUETYPE_INT8 = 1,
CMAP_VALUETYPE_UINT8 = 2,
CMAP_VALUETYPE_INT16 = 3,
CMAP_VALUETYPE_UINT16 = 4,
CMAP_VALUETYPE_INT32 = 5,
CMAP_VALUETYPE_UINT32 = 6,
CMAP_VALUETYPE_INT64 = 7,
CMAP_VALUETYPE_UINT64 = 8,
CMAP_VALUETYPE_FLOAT = 9,
CMAP_VALUETYPE_DOUBLE = 10,
CMAP_VALUETYPE_STRING = 11,
CMAP_VALUETYPE_BINARY = 12,
} cmap_value_types_t;
/*
* Structure passed as new_value and old_value in change callback. It contains type of
* key, length of key and pointer to value of key
*/
struct cmap_notify_value {
cmap_value_types_t type;
size_t len;
const void *data;
};
/*
* Prototype for notify callback function. Even is one of CMAP_TRACK_* event, key_name is
* changed key, new and old_value contains values or are zeroed (in other words, type is non
* existing 0 type) if there were no old (creating of key) or new (deleting of key) value.
* user_data are passed when adding tracking.
*/
typedef void (*cmap_notify_fn_t) (
cmap_handle_t cmap_handle,
cmap_track_handle_t cmap_track_handle,
int32_t event,
const char *key_name,
struct cmap_notify_value new_value,
struct cmap_notify_value old_value,
void *user_data);
/**
* Create a new cmap connection
*
* @param handle will be filled with handle to be used for all following
* operations with cht.
*/
extern cs_error_t cmap_initialize (
cmap_handle_t *handle);
/**
* Close the cmap handle
* @param handle cmap handle
*/
extern cs_error_t cmap_finalize (
cmap_handle_t handle);
/*
* Get a file descriptor on which to poll. cmap_handle_t is NOT a
* file descriptor and may not be used directly.
* @param handle cmap handle initialized by cmap_initialize
* @param fd file descriptor for poll
*/
extern cs_error_t cmap_fd_get (
cmap_handle_t handle,
int *fd);
/**
* Dispatch data from service.
* @param handle cmap handle initialized by cmap_initialize
* @param dispatch_types one of standard corosync dispatch values
*/
extern cs_error_t cmap_dispatch (
cmap_handle_t handle,
cs_dispatch_flags_t dispatch_types);
/*
* Get/set context variable
*/
extern cs_error_t cmap_context_get (
cmap_handle_t handle,
const void **context);
extern cs_error_t cmap_context_set (
cmap_handle_t handle,
const void *context);
/**
* Store value in cmap
* @param handle cmap handle
* @param key_name name of key where to store value
* @param value value to store
* @param value_len length of value to store
* @param type type to store
*/
extern cs_error_t cmap_set(
cmap_handle_t handle,
const char *key_name,
const void *value,
size_t value_len,
cmap_value_types_t type);
/*
* Shortcuts for cmap_set with given type
*/
extern cs_error_t cmap_set_int8(cmap_handle_t handle, const char *key_name, int8_t value);
extern cs_error_t cmap_set_uint8(cmap_handle_t handle, const char *key_name, uint8_t value);
extern cs_error_t cmap_set_int16(cmap_handle_t handle, const char *key_name, int16_t value);
extern cs_error_t cmap_set_uint16(cmap_handle_t handle, const char *key_name, uint16_t value);
extern cs_error_t cmap_set_int32(cmap_handle_t handle, const char *key_name, int32_t value);
extern cs_error_t cmap_set_uint32(cmap_handle_t handle, const char *key_name, uint32_t value);
extern cs_error_t cmap_set_int64(cmap_handle_t handle, const char *key_name, int64_t value);
extern cs_error_t cmap_set_uint64(cmap_handle_t handle, const char *key_name, uint64_t value);
extern cs_error_t cmap_set_float(cmap_handle_t handle, const char *key_name, float value);
extern cs_error_t cmap_set_double(cmap_handle_t handle, const char *key_name, double value);
extern cs_error_t cmap_set_string(cmap_handle_t handle, const char *key_name, const char *value);
/**
* Deletes key from cmap database
* @param handle cmap handle
* @param key_name name of key to delete
*/
extern cs_error_t cmap_delete(cmap_handle_t handle, const char *key_name);
/**
* Retrieve value of key key_name and store it in user preallocated value pointer.
* value can be NULL, and then only value_len and/or type is returned (both of them
* can also be NULL). If value is not NULL, actual length of value in map is checked
* against value_len. If *value_len is shorter then length of value in map, error
* CS_ERR_INVALID_PARAM is returned. After successful copy of value, value_len is
* set to actual length of value in map.
*
* @param handle cmap handle
* @param key_name name of key where to get value
* @param value pointer to store data (or NULL)
* @param value_len pointer with length of value (value != NULL), or pointer where value length
* will be returned (value == NULL) or NULL.
* @param type type of value in cmap
*/
extern cs_error_t cmap_get(
cmap_handle_t handle,
const char *key_name,
void *value,
size_t *value_len,
cmap_value_types_t *type);
/*
* Shortcuts for cmap_get.
*/
extern cs_error_t cmap_get_int8(cmap_handle_t handle, const char *key_name, int8_t *i8);
extern cs_error_t cmap_get_uint8(cmap_handle_t handle, const char *key_name, uint8_t *u8);
extern cs_error_t cmap_get_int16(cmap_handle_t handle, const char *key_name, int16_t *i16);
extern cs_error_t cmap_get_uint16(cmap_handle_t handle, const char *key_name, uint16_t *u16);
extern cs_error_t cmap_get_int32(cmap_handle_t handle, const char *key_name, int32_t *i32);
extern cs_error_t cmap_get_uint32(cmap_handle_t handle, const char *key_name, uint32_t *u32);
extern cs_error_t cmap_get_int64(cmap_handle_t handle, const char *key_name, int64_t *i64);
extern cs_error_t cmap_get_uint64(cmap_handle_t handle, const char *key_name, uint64_t *u64);
extern cs_error_t cmap_get_float(cmap_handle_t handle, const char *key_name, float *flt);
extern cs_error_t cmap_get_double(cmap_handle_t handle, const char *key_name, double *dbl);
/**
* Shortcut for cmap_get for string type. Returned string is newly allocated and
* caller is responsible for freeing memory
* @param handle cmap handle
* @param key_name name of key to get value from
* @param str pointer where char pointer will be stored
*/
extern cs_error_t cmap_get_string(cmap_handle_t handle, const char *key_name, char **str);
/**
* Increment value of key_name if it is [u]int* type
* @param handle cmap handle
* @param key_name key name
*/
extern cs_error_t cmap_inc(cmap_handle_t handle, const char *key_name);
/**
* Decrement value of key_name if it is [u]int* type
* @param handle cmap handle
* @param key_name key name
*/
extern cs_error_t cmap_dec(cmap_handle_t handle, const char *key_name);
/**
* Initialize iterator with given prefix
* @param handle cmap handle
* @param prefix prefix to iterate on
* @param cmap_iter_handle value used for getting next value of iterator and/or deleting iteration
*/
extern cs_error_t cmap_iter_init(cmap_handle_t handle, const char *prefix, cmap_iter_handle_t *cmap_iter_handle);
/**
* Return next item in iterator iter. value_len and type are optional (= can be NULL), but if set,
* length of returned value and/or type is returned.
*
* @param handle cmap handle
* @param cmap_iter_handle handle of iteration returned by cmap_iter_init
* @param key_name place to store name of key. Maximum length is CMAP_KEYNAME_MAXLEN
* @param value_len length of value
* @param type type of value
* @return CS_NO_SECTION if there are no more sections to iterate
*/
extern cs_error_t cmap_iter_next(
cmap_handle_t handle,
cmap_iter_handle_t iter_handle,
char key_name[],
size_t *value_len,
cmap_value_types_t *type);
/**
* Finalize iterator
*/
extern cs_error_t cmap_iter_finalize(cmap_handle_t handle, cmap_iter_handle_t iter_handle);
/*
* Add tracking function for given key_name. Tracked changes (add|modify|delete) depend on track_type,
* which is bitwise or of CMAP_TRACK_* values. notify_fn is called on change, where user_data pointer
* is passed (unchanged). Value which can be used to delete tracking is passed as cmap_track.
* @param handle cmap handle
* @param key_name name of key to track changes on
* @param track_type bitwise-or of CMAP_TRACK_* values
* @param notify_fn function to be called on change of key
* @param user_data given pointer is unchanged passed to notify_fn
* @param cmap_track_handle handle used for removing of newly created track
*/
extern cs_error_t cmap_track_add(
cmap_handle_t handle,
const char *key_name,
int32_t track_type,
cmap_notify_fn_t notify_fn,
void *user_data,
cmap_track_handle_t *cmap_track_handle);
/**
* Delete track created previously by cmap_track_add
* @param handle cmap handle
* @param track_handle Track handle
*/
extern cs_error_t cmap_track_delete(cmap_handle_t handle, cmap_track_handle_t track_handle);
#ifdef __cplusplus
}
#endif
#endif /* COROSYNC_CMAP_H_DEFINED */

3
include/corosync/corodefs.h
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@ -59,7 +59,8 @@ enum corosync_service_types {
TST_SV1_SERVICE = 18,
TST_SV2_SERVICE = 19,
MON_SERVICE = 20,
WD_SERVICE = 21
WD_SERVICE = 21,
CMAP_SERVICE = 22,
};
#ifdef HAVE_SMALL_MEMORY_FOOTPRINT

183
include/corosync/ipc_cmap.h Normal file
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@ -0,0 +1,183 @@
/*
* Copyright (c) 2011 Red Hat, Inc.
*
* All rights reserved.
*
* Author: Jan Friesse (jfriesse@redhat.com)
*
* This software licensed under BSD license, the text of which follows:
*
* 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 the Red Hat, 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 IPC_CMAP_H_DEFINED
#define IPC_CMAP_H_DEFINED
#include <netinet/in.h>
#include <corosync/corotypes.h>
#include <corosync/mar_gen.h>
enum req_cmap_types {
MESSAGE_REQ_CMAP_SET = 0,
MESSAGE_REQ_CMAP_DELETE = 1,
MESSAGE_REQ_CMAP_GET = 2,
MESSAGE_REQ_CMAP_ADJUST_INT = 3,
MESSAGE_REQ_CMAP_ITER_INIT = 4,
MESSAGE_REQ_CMAP_ITER_NEXT = 5,
MESSAGE_REQ_CMAP_ITER_FINALIZE = 6,
MESSAGE_REQ_CMAP_TRACK_ADD = 7,
MESSAGE_REQ_CMAP_TRACK_DELETE = 8,
};
enum res_cmap_types {
MESSAGE_RES_CMAP_SET = 0,
MESSAGE_RES_CMAP_DELETE = 1,
MESSAGE_RES_CMAP_GET = 2,
MESSAGE_RES_CMAP_ADJUST_INT = 3,
MESSAGE_RES_CMAP_ITER_INIT = 4,
MESSAGE_RES_CMAP_ITER_NEXT = 5,
MESSAGE_RES_CMAP_ITER_FINALIZE = 6,
MESSAGE_RES_CMAP_TRACK_ADD = 7,
MESSAGE_RES_CMAP_TRACK_DELETE = 8,
MESSAGE_RES_CMAP_NOTIFY_CALLBACK = 9,
};
struct req_lib_cmap_set {
struct qb_ipc_request_header header __attribute__((aligned(8)));
mar_name_t key_name __attribute__((aligned(8)));
mar_size_t value_len __attribute__((aligned(8)));
mar_uint8_t type __attribute__((aligned(8)));
mar_uint8_t value[] __attribute__((aligned(8)));
};
struct res_lib_cmap_set {
struct qb_ipc_response_header header __attribute__((aligned(8)));
};
struct req_lib_cmap_delete {
struct qb_ipc_request_header header __attribute__((aligned(8)));
mar_name_t key_name __attribute__((aligned(8)));
};
struct res_lib_cmap_delete {
struct qb_ipc_response_header header __attribute__((aligned(8)));
};
struct req_lib_cmap_get {
struct qb_ipc_request_header header __attribute__((aligned(8)));
mar_name_t key_name __attribute__((aligned(8)));
mar_size_t value_len __attribute__((aligned(8)));
};
struct res_lib_cmap_get {
struct qb_ipc_response_header header __attribute__((aligned(8)));
mar_size_t value_len __attribute__((aligned(8)));
mar_uint8_t type __attribute__((aligned(8)));
mar_uint8_t value[] __attribute__((aligned(8)));
};
struct req_lib_cmap_adjust_int {
struct qb_ipc_request_header header __attribute__((aligned(8)));
mar_name_t key_name __attribute__((aligned(8)));
mar_int32_t step __attribute__((aligned(8)));
};
struct res_lib_cmap_adjust_int {
struct qb_ipc_response_header header __attribute__((aligned(8)));
};
struct req_lib_cmap_iter_init {
struct qb_ipc_request_header header __attribute__((aligned(8)));
mar_name_t prefix __attribute__((aligned(8)));
};
struct res_lib_cmap_iter_init {
struct qb_ipc_response_header header __attribute__((aligned(8)));
mar_uint64_t iter_handle __attribute__((aligned(8)));
};
struct req_lib_cmap_iter_next {
struct qb_ipc_request_header header __attribute__((aligned(8)));
mar_uint64_t iter_handle __attribute__((aligned(8)));
};
struct res_lib_cmap_iter_next {
struct qb_ipc_response_header header __attribute__((aligned(8)));
mar_name_t key_name __attribute__((aligned(8)));
mar_size_t value_len __attribute__((aligned(8)));
mar_uint8_t type __attribute__((aligned(8)));
};
struct req_lib_cmap_iter_finalize {
struct qb_ipc_request_header header __attribute__((aligned(8)));
mar_uint64_t iter_handle __attribute__((aligned(8)));
};
struct res_lib_cmap_iter_finalize {
struct qb_ipc_response_header header __attribute__((aligned(8)));
};
struct req_lib_cmap_track_add {
struct qb_ipc_request_header header __attribute__((aligned(8)));
mar_name_t key_name __attribute__((aligned(8)));
mar_int32_t track_type __attribute__((aligned(8)));
mar_uint64_t track_inst_handle __attribute__((aligned(8)));
};
struct res_lib_cmap_track_add {
struct qb_ipc_response_header header __attribute__((aligned(8)));
mar_uint64_t track_handle __attribute__((aligned(8)));
};
struct req_lib_cmap_track_delete {
struct qb_ipc_request_header header __attribute__((aligned(8)));
mar_uint64_t track_handle __attribute__((aligned(8)));
};
struct res_lib_cmap_track_delete {
struct qb_ipc_response_header header __attribute__((aligned(8)));
mar_uint64_t track_inst_handle __attribute__((aligned(8)));
};
struct res_lib_cmap_notify_callback {
struct qb_ipc_response_header header __attribute__((aligned(8)));
mar_uint64_t track_inst_handle __attribute__((aligned(8)));
mar_name_t key_name __attribute__((aligned(8)));
mar_int32_t event __attribute__((aligned(8)));
mar_uint8_t new_value_type __attribute__((aligned(8)));
mar_uint8_t old_value_type __attribute__((aligned(8)));
mar_size_t new_value_len __attribute__((aligned(8)));
mar_size_t old_value_len __attribute__((aligned(8)));
/*
* After old_vale_len, there are two items with length of new_value_len
* and old_value_len, only first (as a pointer) is defined
*
* mar_uint8_t *new_value;
* mar_uint8_t *old_value;
*/
mar_uint8_t new_value[];
};
#endif /* IPC_CMAP_H_DEFINED */

2
services/Makefile.am
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@ -37,7 +37,7 @@ INCLUDES = -I$(top_builddir)/include -I$(top_srcdir)/include \
-I$(top_builddir)/include/corosync \
-I$(top_srcdir)/include/corosync
SERVICE_LCRSO = evs cfg cpg confdb pload
SERVICE_LCRSO = evs cfg cpg confdb pload cmap
if BUILD_WATCHDOG
SERVICE_LCRSO += wd
endif

645
services/cmap.c Normal file
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@ -0,0 +1,645 @@
/*
* Copyright (c) 2011 Red Hat, Inc.
*
* All rights reserved.
*
* Author: Jan Friesse (jfriesse@redhat.com)
*
* This software licensed under BSD license, the text of which follows:
*
* 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 the Red Hat, 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 <config.h>
#include <sys/types.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdlib.h>
#include <errno.h>
#include <unistd.h>
#include <poll.h>
#include <assert.h>
#include <qb/qbloop.h>
#include <qb/qbipc_common.h>
#include <corosync/corotypes.h>
#include <corosync/corodefs.h>
#include <corosync/list.h>
#include <corosync/mar_gen.h>
#include <corosync/ipc_cmap.h>
#include <corosync/lcr/lcr_comp.h>
#include <corosync/engine/logsys.h>
#include <corosync/engine/coroapi.h>
#include <corosync/engine/icmap.h>
#define hdb_error_to_cs(_result_) qb_to_cs_error(_result_)
LOGSYS_DECLARE_SUBSYS ("CMAP");
struct cmap_conn_info {
struct hdb_handle_database iter_db;
struct hdb_handle_database track_db;
};
typedef uint64_t cmap_iter_handle_t;
typedef uint64_t cmap_track_handle_t;
struct cmap_track_user_data {
void *conn;
cmap_track_handle_t track_handle;
uint64_t track_inst_handle;
};
static struct corosync_api_v1 *api;
static int cmap_exec_init_fn (struct corosync_api_v1 *corosync_api);
static int cmap_exec_exit_fn(void);
static int cmap_lib_init_fn (void *conn);
static int cmap_lib_exit_fn (void *conn);
static void message_handler_req_lib_cmap_set(void *conn, const void *message);
static void message_handler_req_lib_cmap_delete(void *conn, const void *message);
static void message_handler_req_lib_cmap_get(void *conn, const void *message);
static void message_handler_req_lib_cmap_adjust_int(void *conn, const void *message);
static void message_handler_req_lib_cmap_iter_init(void *conn, const void *message);
static void message_handler_req_lib_cmap_iter_next(void *conn, const void *message);
static void message_handler_req_lib_cmap_iter_finalize(void *conn, const void *message);
static void message_handler_req_lib_cmap_track_add(void *conn, const void *message);
static void message_handler_req_lib_cmap_track_delete(void *conn, const void *message);
static void cmap_notify_fn(int32_t event,
const char *key_name,
struct icmap_notify_value new_val,
struct icmap_notify_value old_val,
void *user_data);
/*
* Library Handler Definition
*/
static struct corosync_lib_handler cmap_lib_engine[] =
{
{ /* 0 */
.lib_handler_fn = message_handler_req_lib_cmap_set,
.flow_control = CS_LIB_FLOW_CONTROL_NOT_REQUIRED
},
{ /* 1 */
.lib_handler_fn = message_handler_req_lib_cmap_delete,
.flow_control = CS_LIB_FLOW_CONTROL_NOT_REQUIRED
},
{ /* 2 */
.lib_handler_fn = message_handler_req_lib_cmap_get,
.flow_control = CS_LIB_FLOW_CONTROL_NOT_REQUIRED
},
{ /* 3 */
.lib_handler_fn = message_handler_req_lib_cmap_adjust_int,
.flow_control = CS_LIB_FLOW_CONTROL_NOT_REQUIRED
},
{ /* 4 */
.lib_handler_fn = message_handler_req_lib_cmap_iter_init,
.flow_control = CS_LIB_FLOW_CONTROL_NOT_REQUIRED
},
{ /* 5 */
.lib_handler_fn = message_handler_req_lib_cmap_iter_next,
.flow_control = CS_LIB_FLOW_CONTROL_NOT_REQUIRED
},
{ /* 6 */
.lib_handler_fn = message_handler_req_lib_cmap_iter_finalize,
.flow_control = CS_LIB_FLOW_CONTROL_NOT_REQUIRED
},
{ /* 7 */
.lib_handler_fn = message_handler_req_lib_cmap_track_add,
.flow_control = CS_LIB_FLOW_CONTROL_NOT_REQUIRED
},
{ /* 8 */
.lib_handler_fn = message_handler_req_lib_cmap_track_delete,
.flow_control = CS_LIB_FLOW_CONTROL_NOT_REQUIRED
},
};
struct corosync_service_engine cmap_service_engine = {
.name = "corosync configuration map access",
.id = CMAP_SERVICE,
.priority = 1,
.private_data_size = sizeof(struct cmap_conn_info),
.flow_control = CS_LIB_FLOW_CONTROL_NOT_REQUIRED,
.allow_inquorate = CS_LIB_ALLOW_INQUORATE,
.lib_init_fn = cmap_lib_init_fn,
.lib_exit_fn = cmap_lib_exit_fn,
.lib_engine = cmap_lib_engine,
.lib_engine_count = sizeof (cmap_lib_engine) / sizeof (struct corosync_lib_handler),
.exec_init_fn = cmap_exec_init_fn,
.exec_exit_fn = cmap_exec_exit_fn,
};
/*
* Dynamic loader definition
*/
static struct corosync_service_engine *cmap_get_service_engine_ver0 (void);
static struct corosync_service_engine_iface_ver0 cmap_service_engine_iface = {
.corosync_get_service_engine_ver0 = cmap_get_service_engine_ver0
};
static struct lcr_iface corosync_cmap_ver0[1] = {
{
.name = "corosync_cmap",
.version = 0,
.versions_replace = 0,
.versions_replace_count = 0,
.dependencies = 0,
.dependency_count = 0,
.constructor = NULL,
.destructor = NULL,
.interfaces = NULL
}
};
static struct lcr_comp cmap_comp_ver0 = {
.iface_count = 1,
.ifaces = corosync_cmap_ver0
};
static struct corosync_service_engine *cmap_get_service_engine_ver0 (void)
{
return (&cmap_service_engine);
}
#ifdef COROSYNC_SOLARIS
void corosync_lcr_component_register (void);
void corosync_lcr_component_register (void) {
#else
__attribute__ ((constructor)) static void corosync_lcr_component_register (void) {
#endif
lcr_interfaces_set (&corosync_cmap_ver0[0], &cmap_service_engine_iface);
lcr_component_register (&cmap_comp_ver0);
}
static int cmap_exec_exit_fn(void)
{
return 0;
}
static int cmap_exec_init_fn (
struct corosync_api_v1 *corosync_api)
{
#ifdef COROSYNC_SOLARIS
logsys_subsys_init();
#endif
api = corosync_api;
return (0);
}
static int cmap_lib_init_fn (void *conn)
{
struct cmap_conn_info *conn_info = (struct cmap_conn_info *)api->ipc_private_data_get (conn);
log_printf(LOGSYS_LEVEL_DEBUG, "lib_init_fn: conn=%p\n", conn);
api->ipc_refcnt_inc(conn);
memset(conn_info, 0, sizeof(*conn_info));
hdb_create(&conn_info->iter_db);
hdb_create(&conn_info->track_db);
return (0);
}
static int cmap_lib_exit_fn (void *conn)
{
struct cmap_conn_info *conn_info = (struct cmap_conn_info *)api->ipc_private_data_get (conn);
hdb_handle_t iter_handle = 0;
icmap_iter_t *iter;
hdb_handle_t track_handle = 0;
icmap_track_t *track;
log_printf(LOGSYS_LEVEL_DEBUG, "exit_fn for conn=%p\n", conn);
hdb_iterator_reset(&conn_info->iter_db);
while (hdb_iterator_next(&conn_info->iter_db,
(void*)&iter, &iter_handle) == 0) {
icmap_iter_finalize(*iter);
(void)hdb_handle_put (&conn_info->iter_db, iter_handle);
}
hdb_destroy(&conn_info->iter_db);
hdb_iterator_reset(&conn_info->track_db);
while (hdb_iterator_next(&conn_info->track_db,
(void*)&track, &track_handle) == 0) {
free(icmap_track_get_user_data(*track));
icmap_track_delete(*track);
(void)hdb_handle_put (&conn_info->track_db, track_handle);
}
hdb_destroy(&conn_info->track_db);
api->ipc_refcnt_dec(conn);
return (0);
}
static void message_handler_req_lib_cmap_set(void *conn, const void *message)
{
const struct req_lib_cmap_set *req_lib_cmap_set = message;
struct res_lib_cmap_set res_lib_cmap_set;
cs_error_t ret;
if (icmap_is_key_ro((char *)req_lib_cmap_set->key_name.value)) {
ret = CS_ERR_ACCESS;
} else {
ret = icmap_set((char *)req_lib_cmap_set->key_name.value, &req_lib_cmap_set->value,
req_lib_cmap_set->value_len, req_lib_cmap_set->type);
}
memset(&res_lib_cmap_set, 0, sizeof(res_lib_cmap_set));
res_lib_cmap_set.header.size = sizeof(res_lib_cmap_set);
res_lib_cmap_set.header.id = MESSAGE_RES_CMAP_SET;
res_lib_cmap_set.header.error = ret;
api->ipc_response_send(conn, &res_lib_cmap_set, sizeof(res_lib_cmap_set));
}
static void message_handler_req_lib_cmap_delete(void *conn, const void *message)
{
const struct req_lib_cmap_set *req_lib_cmap_set = message;
struct res_lib_cmap_delete res_lib_cmap_delete;
cs_error_t ret;
if (icmap_is_key_ro((char *)req_lib_cmap_set->key_name.value)) {
ret = CS_ERR_ACCESS;
} else {
ret = icmap_delete((char *)req_lib_cmap_set->key_name.value);
}
memset(&res_lib_cmap_delete, 0, sizeof(res_lib_cmap_delete));
res_lib_cmap_delete.header.size = sizeof(res_lib_cmap_delete);
res_lib_cmap_delete.header.id = MESSAGE_RES_CMAP_DELETE;
res_lib_cmap_delete.header.error = ret;
api->ipc_response_send(conn, &res_lib_cmap_delete, sizeof(res_lib_cmap_delete));
}
static void message_handler_req_lib_cmap_get(void *conn, const void *message)
{
const struct req_lib_cmap_get *req_lib_cmap_get = message;
struct res_lib_cmap_get *res_lib_cmap_get;
struct res_lib_cmap_get error_res_lib_cmap_get;
cs_error_t ret;
size_t value_len;
size_t res_lib_cmap_get_size;
icmap_value_types_t type;
void *value;
value_len = req_lib_cmap_get->value_len;
res_lib_cmap_get_size = sizeof(*res_lib_cmap_get) + value_len;
res_lib_cmap_get = malloc(res_lib_cmap_get_size);
if (res_lib_cmap_get == NULL) {
ret = CS_ERR_NO_MEMORY;
goto error_exit;
}
memset(res_lib_cmap_get, 0, res_lib_cmap_get_size);
if (value_len > 0) {
value = res_lib_cmap_get->value;
} else {
value = NULL;
}
ret = icmap_get((char *)req_lib_cmap_get->key_name.value,
value,
&value_len,
&type);
if (ret != CS_OK) {
free(res_lib_cmap_get);
goto error_exit;
}
res_lib_cmap_get->header.size = res_lib_cmap_get_size;
res_lib_cmap_get->header.id = MESSAGE_RES_CMAP_GET;
res_lib_cmap_get->header.error = ret;
res_lib_cmap_get->type = type;
res_lib_cmap_get->value_len = value_len;
api->ipc_response_send(conn, res_lib_cmap_get, res_lib_cmap_get_size);
free(res_lib_cmap_get);
return ;
error_exit:
memset(&error_res_lib_cmap_get, 0, sizeof(error_res_lib_cmap_get));
error_res_lib_cmap_get.header.size = sizeof(error_res_lib_cmap_get);
error_res_lib_cmap_get.header.id = MESSAGE_RES_CMAP_GET;
error_res_lib_cmap_get.header.error = ret;
api->ipc_response_send(conn, &error_res_lib_cmap_get, sizeof(error_res_lib_cmap_get));
}
static void message_handler_req_lib_cmap_adjust_int(void *conn, const void *message)
{
const struct req_lib_cmap_adjust_int *req_lib_cmap_adjust_int = message;
struct res_lib_cmap_adjust_int res_lib_cmap_adjust_int;
cs_error_t ret;
ret = icmap_adjust_int((char *)req_lib_cmap_adjust_int->key_name.value, req_lib_cmap_adjust_int->step);
memset(&res_lib_cmap_adjust_int, 0, sizeof(res_lib_cmap_adjust_int));
res_lib_cmap_adjust_int.header.size = sizeof(res_lib_cmap_adjust_int);
res_lib_cmap_adjust_int.header.id = MESSAGE_RES_CMAP_ADJUST_INT;
res_lib_cmap_adjust_int.header.error = ret;
api->ipc_response_send(conn, &res_lib_cmap_adjust_int, sizeof(res_lib_cmap_adjust_int));
}
static void message_handler_req_lib_cmap_iter_init(void *conn, const void *message)
{
const struct req_lib_cmap_iter_init *req_lib_cmap_iter_init = message;
struct res_lib_cmap_iter_init res_lib_cmap_iter_init;
cs_error_t ret;
icmap_iter_t iter;
icmap_iter_t *hdb_iter;
cmap_iter_handle_t handle;
const char *prefix;
struct cmap_conn_info *conn_info = (struct cmap_conn_info *)api->ipc_private_data_get (conn);
if (req_lib_cmap_iter_init->prefix.length > 0) {
prefix = (char *)req_lib_cmap_iter_init->prefix.value;
} else {
prefix = NULL;
}
iter = icmap_iter_init(prefix);
if (iter == NULL) {
ret = CS_ERR_NO_SECTIONS;
goto reply_send;
}
ret = hdb_error_to_cs(hdb_handle_create(&conn_info->iter_db, sizeof(iter), &handle));
if (ret != CS_OK) {
goto reply_send;
}
ret = hdb_error_to_cs(hdb_handle_get(&conn_info->iter_db, handle, (void *)&hdb_iter));
if (ret != CS_OK) {
goto reply_send;
}
*hdb_iter = iter;
(void)hdb_handle_put (&conn_info->iter_db, handle);
reply_send:
memset(&res_lib_cmap_iter_init, 0, sizeof(res_lib_cmap_iter_init));
res_lib_cmap_iter_init.header.size = sizeof(res_lib_cmap_iter_init);
res_lib_cmap_iter_init.header.id = MESSAGE_RES_CMAP_ITER_INIT;
res_lib_cmap_iter_init.header.error = ret;
res_lib_cmap_iter_init.iter_handle = handle;
api->ipc_response_send(conn, &res_lib_cmap_iter_init, sizeof(res_lib_cmap_iter_init));
}
static void message_handler_req_lib_cmap_iter_next(void *conn, const void *message)
{
const struct req_lib_cmap_iter_next *req_lib_cmap_iter_next = message;
struct res_lib_cmap_iter_next res_lib_cmap_iter_next;
cs_error_t ret;
icmap_iter_t *iter;
size_t value_len;
icmap_value_types_t type;
const char *res = NULL;
struct cmap_conn_info *conn_info = (struct cmap_conn_info *)api->ipc_private_data_get (conn);
ret = hdb_error_to_cs(hdb_handle_get(&conn_info->iter_db,
req_lib_cmap_iter_next->iter_handle, (void *)&iter));
if (ret != CS_OK) {
goto reply_send;
}
res = icmap_iter_next(*iter, &value_len, &type);
if (res == NULL) {
ret = CS_ERR_NO_SECTIONS;
}
(void)hdb_handle_put (&conn_info->iter_db, req_lib_cmap_iter_next->iter_handle);
reply_send:
memset(&res_lib_cmap_iter_next, 0, sizeof(res_lib_cmap_iter_next));
res_lib_cmap_iter_next.header.size = sizeof(res_lib_cmap_iter_next);
res_lib_cmap_iter_next.header.id = MESSAGE_RES_CMAP_ITER_NEXT;
res_lib_cmap_iter_next.header.error = ret;
if (res != NULL) {
res_lib_cmap_iter_next.value_len = value_len;
res_lib_cmap_iter_next.type = type;
memcpy(res_lib_cmap_iter_next.key_name.value, res, strlen(res));
res_lib_cmap_iter_next.key_name.length = strlen(res);
}
api->ipc_response_send(conn, &res_lib_cmap_iter_next, sizeof(res_lib_cmap_iter_next));
}
static void message_handler_req_lib_cmap_iter_finalize(void *conn, const void *message)
{
const struct req_lib_cmap_iter_finalize *req_lib_cmap_iter_finalize = message;
struct res_lib_cmap_iter_finalize res_lib_cmap_iter_finalize;
cs_error_t ret;
icmap_iter_t *iter;
struct cmap_conn_info *conn_info = (struct cmap_conn_info *)api->ipc_private_data_get (conn);
ret = hdb_error_to_cs(hdb_handle_get(&conn_info->iter_db,
req_lib_cmap_iter_finalize->iter_handle, (void *)&iter));
if (ret != CS_OK) {
goto reply_send;
}
icmap_iter_finalize(*iter);
(void)hdb_handle_destroy(&conn_info->iter_db, req_lib_cmap_iter_finalize->iter_handle);
(void)hdb_handle_put (&conn_info->iter_db, req_lib_cmap_iter_finalize->iter_handle);
reply_send:
memset(&res_lib_cmap_iter_finalize, 0, sizeof(res_lib_cmap_iter_finalize));
res_lib_cmap_iter_finalize.header.size = sizeof(res_lib_cmap_iter_finalize);
res_lib_cmap_iter_finalize.header.id = MESSAGE_RES_CMAP_ITER_FINALIZE;
res_lib_cmap_iter_finalize.header.error = ret;
api->ipc_response_send(conn, &res_lib_cmap_iter_finalize, sizeof(res_lib_cmap_iter_finalize));
}
static void cmap_notify_fn(int32_t event,
const char *key_name,
struct icmap_notify_value new_val,
struct icmap_notify_value old_val,
void *user_data)
{
struct cmap_track_user_data *cmap_track_user_data = (struct cmap_track_user_data *)user_data;
struct res_lib_cmap_notify_callback res_lib_cmap_notify_callback;
struct iovec iov[3];
memset(&res_lib_cmap_notify_callback, 0, sizeof(res_lib_cmap_notify_callback));
res_lib_cmap_notify_callback.header.size = sizeof(res_lib_cmap_notify_callback) + new_val.len + old_val.len;
res_lib_cmap_notify_callback.header.id = MESSAGE_RES_CMAP_NOTIFY_CALLBACK;
res_lib_cmap_notify_callback.header.error = CS_OK;
res_lib_cmap_notify_callback.new_value_type = new_val.type;
res_lib_cmap_notify_callback.old_value_type = old_val.type;
res_lib_cmap_notify_callback.new_value_len = new_val.len;
res_lib_cmap_notify_callback.old_value_len = old_val.len;
res_lib_cmap_notify_callback.event = event;
res_lib_cmap_notify_callback.key_name.length = strlen(key_name);
res_lib_cmap_notify_callback.track_inst_handle = cmap_track_user_data->track_inst_handle;
memcpy(res_lib_cmap_notify_callback.key_name.value, key_name, strlen(key_name));
iov[0].iov_base = (char *)&res_lib_cmap_notify_callback;
iov[0].iov_len = sizeof(res_lib_cmap_notify_callback);
iov[1].iov_base = (char *)new_val.data;
iov[1].iov_len = new_val.len;
iov[2].iov_base = (char *)old_val.data;
iov[2].iov_len = old_val.len;
api->ipc_dispatch_iov_send(cmap_track_user_data->conn, iov, 3);
}
static void message_handler_req_lib_cmap_track_add(void *conn, const void *message)
{
const struct req_lib_cmap_track_add *req_lib_cmap_track_add = message;
struct res_lib_cmap_track_add res_lib_cmap_track_add;
cs_error_t ret;
cmap_track_handle_t handle;
icmap_track_t track;
icmap_track_t *hdb_track;
struct cmap_track_user_data *cmap_track_user_data;
const char *key_name;
struct cmap_conn_info *conn_info = (struct cmap_conn_info *)api->ipc_private_data_get (conn);
cmap_track_user_data = malloc(sizeof(*cmap_track_user_data));
if (cmap_track_user_data == NULL) {
ret = CS_ERR_NO_MEMORY;
goto reply_send;
}
memset(cmap_track_user_data, 0, sizeof(*cmap_track_user_data));
if (req_lib_cmap_track_add->key_name.length > 0) {
key_name = (char *)req_lib_cmap_track_add->key_name.value;
} else {
key_name = NULL;
}
ret = icmap_track_add(key_name,
req_lib_cmap_track_add->track_type,
cmap_notify_fn,
cmap_track_user_data,
&track);
if (ret != CS_OK) {
free(cmap_track_user_data);
goto reply_send;
}
ret = hdb_error_to_cs(hdb_handle_create(&conn_info->track_db, sizeof(track), &handle));
if (ret != CS_OK) {
free(cmap_track_user_data);
goto reply_send;
}
ret = hdb_error_to_cs(hdb_handle_get(&conn_info->track_db, handle, (void *)&hdb_track));
if (ret != CS_OK) {
free(cmap_track_user_data);
goto reply_send;
}
*hdb_track = track;
cmap_track_user_data->conn = conn;
cmap_track_user_data->track_handle = handle;
cmap_track_user_data->track_inst_handle = req_lib_cmap_track_add->track_inst_handle;
(void)hdb_handle_put (&conn_info->track_db, handle);
reply_send:
memset(&res_lib_cmap_track_add, 0, sizeof(res_lib_cmap_track_add));
res_lib_cmap_track_add.header.size = sizeof(res_lib_cmap_track_add);
res_lib_cmap_track_add.header.id = MESSAGE_RES_CMAP_TRACK_ADD;
res_lib_cmap_track_add.header.error = ret;
res_lib_cmap_track_add.track_handle = handle;
api->ipc_response_send(conn, &res_lib_cmap_track_add, sizeof(res_lib_cmap_track_add));
}
static void message_handler_req_lib_cmap_track_delete(void *conn, const void *message)
{
const struct req_lib_cmap_track_delete *req_lib_cmap_track_delete = message;
struct res_lib_cmap_track_delete res_lib_cmap_track_delete;
cs_error_t ret;
icmap_track_t *track;
struct cmap_conn_info *conn_info = (struct cmap_conn_info *)api->ipc_private_data_get (conn);
uint64_t track_inst_handle = 0;
ret = hdb_error_to_cs(hdb_handle_get(&conn_info->track_db,
req_lib_cmap_track_delete->track_handle, (void *)&track));
if (ret != CS_OK) {
goto reply_send;
}
track_inst_handle = ((struct cmap_track_user_data *)icmap_track_get_user_data(*track))->track_inst_handle;
free(icmap_track_get_user_data(*track));
ret = icmap_track_delete(*track);
(void)hdb_handle_put (&conn_info->track_db, req_lib_cmap_track_delete->track_handle);
(void)hdb_handle_destroy(&conn_info->track_db, req_lib_cmap_track_delete->track_handle);
reply_send:
memset(&res_lib_cmap_track_delete, 0, sizeof(res_lib_cmap_track_delete));
res_lib_cmap_track_delete.header.size = sizeof(res_lib_cmap_track_delete);
res_lib_cmap_track_delete.header.id = MESSAGE_RES_CMAP_TRACK_DELETE;
res_lib_cmap_track_delete.header.error = ret;
res_lib_cmap_track_delete.track_inst_handle = track_inst_handle;
api->ipc_response_send(conn, &res_lib_cmap_track_delete, sizeof(res_lib_cmap_track_delete));
}