Implement the parse_performance_data function

fixes #8693

doc/20-library-reference.md

@@ -18,6 +18,7 @@ log(value)                      | Writes a message to the log. Non-string values
 log(severity, facility, value)  | Writes a message to the log. `severity` can be one of `LogDebug`, `LogNotice`, `LogInformation`, `LogWarning`, and `LogCritical`. Non-string values are converted to a JSON string.
 typeof(value)                   | Returns the type object for a value.
 get_time()                      | Returns the current UNIX timestamp.
+parse_performance_data(pd)      | Parses a performance data string and returns an array describing the values.
 exit(integer)                   | Terminates the application.
 
 ## <a id="object-accessor-functions"></a> Object Accessor Functions

lib/icinga/perfdatavalue.cpp

@@ -21,6 +21,7 @@
 #include "base/convert.hpp"
 #include "base/exception.hpp"
 #include "base/logger.hpp"
+#include "base/function.hpp"
 #include <boost/algorithm/string/case_conv.hpp>
 #include <boost/algorithm/string/split.hpp>
 #include <boost/algorithm/string/classification.hpp>
@@ -28,6 +29,7 @@
 using namespace icinga;
 
 REGISTER_TYPE(PerfdataValue);
+REGISTER_SCRIPTFUNCTION(parse_performance_data, PerfdataValue::Parse);
 
 PerfdataValue::PerfdataValue(void)
 { }