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Two new functions, REALTIME_FIELD, and REALTIME_HASH, which should make

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querying realtime from the dialplan a little more consistent and easy to use.
The original REALTIME function is preserved, for those who are already
accustomed to that interface.
(closes issue #13651)
 Reported by: Corydon76
 Patches: 
       20081119__bug13651__2.diff.txt uploaded by Corydon76 (license 14)
 Tested by: blitzrage, Corydon76


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@157870 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Tilghman Lesher
2008-11-19 21:54:39 +00:00
parent 0e5367f7eb
commit e316c21986
1 changed files with 149 additions and 2 deletions
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151
funcs/func_realtime.c
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@@ -98,11 +98,67 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
</syntax>
<description>
<para>This function acts in the same way as REALTIME(....) does, except that
it destroys matched record in RT engine.</para>
it destroys the matched record in the RT engine.</para>
</description>
</function>
<function name="REALTIME_FIELD" language="en_US">
<synopsis>
RealTime query function.
</synopsis>
<syntax>
<parameter name="family" required="true" />
<parameter name="fieldmatch" required="true" />
<parameter name="value" required="true" />
<parameter name="fieldname" required="true" />
</syntax>
<description>
<para>This function retrieves a single item, <replaceable>fieldname</replaceable>
from the RT engine, where <replaceable>fieldmatch</replaceable> contains the value
<replaceable>value</replaceable>. When written to, the REALTIME_FIELD() function
performs identically to the REALTIME() function.</para>
</description>
</function>
<function name="REALTIME_HASH" language="en_US">
<synopsis>
RealTime query function.
</synopsis>
<syntax>
<parameter name="family" required="true" />
<parameter name="fieldmatch" required="true" />
<parameter name="value" required="true" />
</syntax>
<description>
<para>This function retrieves a single record from the RT engine, where
<replaceable>fieldmatch</replaceable> contains the value
<replaceable>value</replaceable> and formats the output suitably, such that
it can be assigned to the HASH() function. The HASH() function then provides
a suitable method for retrieving each field value of the record.</para>
</description>
</function>
***/
AST_THREADSTORAGE(buf1);
AST_THREADSTORAGE(buf2);
AST_THREADSTORAGE(buf3);
static char *hash_escape(struct ast_str **str, const char *value)
{
int len;
ast_str_reset(*str);
if ((*str)->len < (len = strlen(value) * 2 + 1)) {
ast_str_make_space(str, len);
}
for (; *value; value++) {
if (*value == ',' || *value == '\\') {
(*str)->str[(*str)->used++] = '\\';
}
(*str)->str[(*str)->used++] = *value;
}
(*str)->str[(*str)->used] = '\0';
return (*str)->str;
}
static int function_realtime_read(struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t len)
{
struct ast_variable *var, *head;
@@ -169,7 +225,7 @@ static int function_realtime_write(struct ast_channel *chan, const char *cmd, ch
);
if (ast_strlen_zero(data)) {
ast_log(LOG_WARNING, "Syntax: REALTIME(family,fieldmatch,value,newcol) - missing argument!\n");
ast_log(LOG_WARNING, "Syntax: %s(family,fieldmatch,value,newcol) - missing argument!\n", cmd);
return -1;
}
@@ -190,6 +246,82 @@ static int function_realtime_write(struct ast_channel *chan, const char *cmd, ch
return 0;
}
static int realtimefield_read(struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t len)
{
struct ast_variable *var, *head;
struct ast_str *escapebuf = ast_str_thread_get(&buf1, 16);
struct ast_str *fields = ast_str_thread_get(&buf2, 16);
struct ast_str *values = ast_str_thread_get(&buf3, 16);
int first;
enum { rtfield, rthash } which;
AST_DECLARE_APP_ARGS(args,
AST_APP_ARG(family);
AST_APP_ARG(fieldmatch);
AST_APP_ARG(value);
AST_APP_ARG(fieldname);
);
if (!strcmp(cmd, "REALTIME_FIELD")) {
which = rtfield;
} else {
which = rthash;
}
if (ast_strlen_zero(data)) {
ast_log(LOG_WARNING, "Syntax: %s(family,fieldmatch,value%s) - missing argument!\n", cmd, which == rtfield ? ",fieldname" : "");
return -1;
}
AST_STANDARD_APP_ARGS(args, data);
if ((which == rtfield && args.argc != 4) || (which == rthash && args.argc != 3)) {
ast_log(LOG_WARNING, "Syntax: %s(family,fieldmatch,value%s) - missing argument!\n", cmd, which == rtfield ? ",fieldname" : "");
return -1;
}
if (chan) {
ast_autoservice_start(chan);
}
if (!(head = ast_load_realtime_all(args.family, args.fieldmatch, args.value, SENTINEL))) {
if (chan) {
ast_autoservice_stop(chan);
}
return -1;
}
ast_str_reset(fields);
ast_str_reset(values);
for (var = head; var; var = var->next) {
if (which == rtfield) {
ast_debug(1, "Comparing %s to %s\n", var->name, args.fieldname);
if (!strcasecmp(var->name, args.fieldname)) {
ast_debug(1, "Match! Value is %s\n", var->value);
ast_copy_string(buf, var->value, len);
break;
}
} else if (which == rthash) {
ast_debug(1, "Setting hash key %s to value %s\n", var->name, var->value);
ast_str_append(&fields, 0, "%s%s", first ? "" : ",", hash_escape(&escapebuf, var->name));
ast_str_append(&values, 0, "%s%s", first ? "" : ",", hash_escape(&escapebuf, var->value));
first = 0;
}
}
ast_variables_destroy(head);
if (which == rthash) {
pbx_builtin_setvar_helper(chan, "~ODBCFIELDS~", fields->str);
ast_copy_string(buf, values->str, len);
}
if (chan) {
ast_autoservice_stop(chan);
}
return 0;
}
static int function_realtime_store(struct ast_channel *chan, const char *cmd, char *data, const char *value)
{
int res = 0;
@@ -302,6 +434,17 @@ struct ast_custom_function realtime_function = {
.write = function_realtime_write,
};
struct ast_custom_function realtimefield_function = {
.name = "REALTIME_FIELD",
.read = realtimefield_read,
.write = function_realtime_write,
};
struct ast_custom_function realtimehash_function = {
.name = "REALTIME_HASH",
.read = realtimefield_read,
};
struct ast_custom_function realtime_store_function = {
.name = "REALTIME_STORE",
.write = function_realtime_store,
@@ -318,6 +461,8 @@ static int unload_module(void)
res |= ast_custom_function_unregister(&realtime_function);
res |= ast_custom_function_unregister(&realtime_store_function);
res |= ast_custom_function_unregister(&realtime_destroy_function);
res |= ast_custom_function_unregister(&realtimefield_function);
res |= ast_custom_function_unregister(&realtimehash_function);
return res;
}
@@ -327,6 +472,8 @@ static int load_module(void)
res |= ast_custom_function_register(&realtime_function);
res |= ast_custom_function_register(&realtime_store_function);
res |= ast_custom_function_register(&realtime_destroy_function);
res |= ast_custom_function_register(&realtimefield_function);
res |= ast_custom_function_register(&realtimehash_function);
return res;
}