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Server list handling functions consistency

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The functions handling servers lists now act with a bit more
consistency, always returning the array size instead of NULL-
terminating arrays.
This commit is contained in:
Esa Korhonen
2017-03-16 14:13:51 +02:00
parent bbcfe98651
commit 558a264e6d
5 changed files with 84 additions and 46 deletions
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28
include/maxscale/config.h
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@ -206,15 +206,33 @@ struct service* config_get_service(const MXS_CONFIG_PARAMETER *params, const cha
struct server* config_get_server(const MXS_CONFIG_PARAMETER *params, const char *key);
/**
* @brief Get an array of servers. The caller should free the returned array, but not
* the array elements.
* @brief Get an array of servers. The caller should free the produced array,
* but not the array elements.
*
* @param params List of configuration parameters
* @param key Parameter name
*
* @return Pointer to a null-terminated array of servers, or null if none found.
* @param output Where to save the output
* @return How many servers were found, equal to output array size
*/
struct server** config_get_serverlist(const MXS_CONFIG_PARAMETER *params, const char *key);
int config_get_server_list(const MXS_CONFIG_PARAMETER *params, const char *key,
struct server*** output);
/**
* Parse a list of server names and write the results in an array of strings
* with one server name in each. The output array and its elements should be
* deallocated by the caller. The server names are not checked to be actual
* configured servers.
*
* The output array may contain more elements than the the value returned, but these
* extra elements are null and in the end of the array. If no server names were
* parsed or if an error occurs, nothing is written to the output parameter.
*
* @param servers A list of server names
* @param output_array Where to save the output
* @return How many servers were found and set into the array. 0 on error or if
* none were found.
*/
int config_parse_server_list(const char *servers, char ***output_array);
/**
* @brief Get copy of parameter value if it is defined