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Consolidate parsing of output from executing repmgr on a remote server

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This should also fix the issue reported in GitHub #349.
This commit is contained in:
Ian Barwick
2018-01-09 13:33:38 +09:00
parent 6b70e8bbe6
commit 0c62821ffb
1 changed files with 98 additions and 135 deletions
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233
repmgr-action-standby.c
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@@ -99,7 +99,8 @@ static bool create_recovery_file(t_node_info *node_record, t_conninfo_param_list
static void write_primary_conninfo(char *line, t_conninfo_param_list *param_list);
static bool write_recovery_file_line(FILE *recovery_file, char *recovery_file_path, char *line);
static int parse_output_to_argv(const char *string, char ***argv_array);
static void free_parsed_argv(char ***argv_array);
static NodeStatus parse_node_status_is_shutdown_cleanly(const char *node_status_output, XLogRecPtr *checkPoint);
static CheckStatus parse_node_check_archiver(const char *node_check_output, int *files, int *threshold);
@@ -5032,28 +5033,14 @@ write_primary_conninfo(char *line, t_conninfo_param_list *param_list)
}
/* TODO: consolidate code in below functions */
static NodeStatus
parse_node_status_is_shutdown_cleanly(const char *node_status_output, XLogRecPtr *checkPoint)
{
int options_len = 0;
char *options_string = NULL;
char *options_string_ptr = NULL;
NodeStatus node_status = NODE_STATUS_UNKNOWN;
/*
* Add parsed options to this list, then copy to an array to pass to
* getopt
*/
static ItemList option_argv = {NULL, NULL};
char *argv_item;
int c,
argc_item = 1;
char **argv_array;
ItemListCell *cell;
int c = 0,
argc_item = 0;
char **argv_array = NULL;
int optindex = 0;
/* We're only interested in these options */
@@ -5071,51 +5058,7 @@ parse_node_status_is_shutdown_cleanly(const char *node_status_output, XLogRecPtr
return node_status;
}
options_len = strlen(node_status_output) + 1;
options_string = pg_malloc(options_len);
options_string_ptr = options_string;
/* Copy the string before operating on it with strtok() */
strncpy(options_string, node_status_output, options_len);
/* Extract arguments into a list and keep a count of the total */
while ((argv_item = strtok(options_string_ptr, " ")) != NULL)
{
item_list_append(&option_argv, argv_item);
argc_item++;
if (options_string_ptr != NULL)
options_string_ptr = NULL;
}
/*
* Array of argument values to pass to getopt_long - this will need to
* include an empty string as the first value (normally this would be the
* program name)
*/
argv_array = pg_malloc0(sizeof(char *) * (argc_item + 2));
/* Insert a blank dummy program name at the start of the array */
argv_array[0] = pg_malloc0(1);
c = 1;
/*
* Copy the previously extracted arguments from our list to the array
*/
for (cell = option_argv.head; cell; cell = cell->next)
{
int argv_len = strlen(cell->string) + 1;
argv_array[c] = pg_malloc0(argv_len);
strncpy(argv_array[c], cell->string, argv_len);
c++;
}
argv_array[c] = NULL;
argc_item = parse_output_to_argv(node_status_output, &argv_array);
/* Reset getopt's optind variable */
optind = 0;
@@ -5156,16 +5099,7 @@ parse_node_status_is_shutdown_cleanly(const char *node_status_output, XLogRecPtr
}
}
pfree(options_string);
{
int i;
for (i = 0; i < argc_item + 2; i++)
pfree(argv_array[i]);
}
pfree(argv_array);
free_parsed_argv(&argv_array);
return node_status;
}
@@ -5174,26 +5108,11 @@ parse_node_status_is_shutdown_cleanly(const char *node_status_output, XLogRecPtr
static CheckStatus
parse_node_check_archiver(const char *node_check_output, int *files, int *threshold)
{
int options_len = 0;
char *options_string = NULL;
char *options_string_ptr = NULL;
CheckStatus status = CHECK_STATUS_UNKNOWN;
/*
* Add parsed options to this list, then copy to an array to pass to
* getopt
*/
static ItemList option_argv = {NULL, NULL};
char *argv_item;
int c,
argc_item = 1;
char **argv_array;
ItemListCell *cell;
int c = 0,
argc_item = 0;
char **argv_array = NULL;
int optindex = 0;
/* We're only interested in these options */
@@ -5214,51 +5133,8 @@ parse_node_check_archiver(const char *node_check_output, int *files, int *thresh
return status;
}
options_len = strlen(node_check_output) + 1;
options_string = pg_malloc(options_len);
options_string_ptr = options_string;
argc_item = parse_output_to_argv(node_check_output, &argv_array);
/* Copy the string before operating on it with strtok() */
strncpy(options_string, node_check_output, options_len);
/* Extract arguments into a list and keep a count of the total */
while ((argv_item = strtok(options_string_ptr, " ")) != NULL)
{
item_list_append(&option_argv, argv_item);
argc_item++;
if (options_string_ptr != NULL)
options_string_ptr = NULL;
}
/*
* Array of argument values to pass to getopt_long - this will need to
* include an empty string as the first value (normally this would be the
* program name)
*/
argv_array = pg_malloc0(sizeof(char *) * (argc_item + 2));
/* Insert a blank dummy program name at the start of the array */
argv_array[0] = pg_malloc0(1);
c = 1;
/*
* Copy the previously extracted arguments from our list to the array
*/
for (cell = option_argv.head; cell; cell = cell->next)
{
int argv_len = strlen(cell->string) + 1;
argv_array[c] = pg_malloc0(argv_len);
strncpy(argv_array[c], cell->string, argv_len);
c++;
}
argv_array[c] = NULL;
/* Reset getopt's optind variable */
optind = 0;
@@ -5308,11 +5184,98 @@ parse_node_check_archiver(const char *node_check_output, int *files, int *thresh
}
}
free_parsed_argv(&argv_array);
return status;
}
static int
parse_output_to_argv(const char *string, char ***argv_array)
{
int options_len = 0;
char *options_string = NULL;
char *options_string_ptr = NULL;
int c = 1,
argc_item = 1;
char *argv_item = NULL;
char **local_argv_array = NULL;
ItemListCell *cell;
/*
* Add parsed options to this list, then copy to an array to pass to
* getopt
*/
ItemList option_argv = {NULL, NULL};
options_len = strlen(string) + 1;
options_string = pg_malloc(options_len);
options_string_ptr = options_string;
/* Copy the string before operating on it with strtok() */
strncpy(options_string, string, options_len);
/* Extract arguments into a list and keep a count of the total */
while ((argv_item = strtok(options_string_ptr, " ")) != NULL)
{
item_list_append(&option_argv, argv_item);
argc_item++;
if (options_string_ptr != NULL)
options_string_ptr = NULL;
}
pfree(options_string);
/*
* Array of argument values to pass to getopt_long - this will need to
* include an empty string as the first value (normally this would be the
* program name)
*/
local_argv_array = pg_malloc0(sizeof(char *) * (argc_item + 2));
/* Insert a blank dummy program name at the start of the array */
local_argv_array[0] = pg_malloc0(1);
/*
* Copy the previously extracted arguments from our list to the array
*/
for (cell = option_argv.head; cell; cell = cell->next)
{
int argv_len = strlen(cell->string) + 1;
local_argv_array[c] = pg_malloc0(argv_len);
strncpy(local_argv_array[c], cell->string, argv_len);
c++;
}
local_argv_array[c] = NULL;
item_list_free(&option_argv);
*argv_array = local_argv_array;
return argc_item;
}
static void
free_parsed_argv(char ***argv_array)
{
char **local_argv_array = *argv_array;
int i = 0;
while (local_argv_array[i] != NULL)
{
pfree(local_argv_array[i]);
i++;
}
pfree(local_argv_array);
}
void