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use event_klass::EventKlass;
use event::DataType;
#[derive(Copy, Clone)]
pub enum CoreEventKlassId {
Base = 1,
Endianness = 2,
KlassInfo = 3,
FieldInfo = 4
}
impl CoreEventKlassId {
pub fn is_core_klass(klass_id: u32) ->bool {
use self::CoreEventKlassId::*;
for val in &[Base, Endianness, FieldInfo, KlassInfo] {
if *val as u32 == klass_id {
return true
}
}
false
}
}
#[derive(Default)]
pub struct EventKlassRegistry {
klasses: std::collections::HashMap<u32, EventKlass>
}
impl EventKlassRegistry {
pub fn new() -> EventKlassRegistry {
let mut reg = EventKlassRegistry {
klasses: std::collections::HashMap::new()
};
reg.create_core_klasses();
reg
}
fn create_core_klass(&mut self, klass_id: CoreEventKlassId, klass_name: &str, fields: &[(&str, &str, DataType)]) {
let mut klass = EventKlass::new(klass_id as u32, klass_name.to_string());
for (name, type_name, data_type) in fields {
klass.add_field(name.to_string(), type_name.to_string(), *data_type);
}
self.klasses.insert(klass.get_id(), klass);
}
fn create_core_klasses(&mut self) {
self.create_core_klass(CoreEventKlassId::Base, "HT_Event",
&[("type", "uint32_t", DataType::U32), ("timestamp", "uint64_t", DataType::U64), ("id", "uint64_t", DataType::U64)]);
self.create_core_klass(CoreEventKlassId::Endianness, "HT_EndiannessInfoEvent", &[("endianness", "uint8_t", DataType::U8)]);
self.create_core_klass(CoreEventKlassId::KlassInfo, "HT_EventKlassInfoEvent",
&[("info_klass_id", "uint32_t", DataType::U32), ("event_klass_name", "const char*", DataType::Str), ("field_count", "uint8_t", DataType::U8)]);
self.create_core_klass(CoreEventKlassId::FieldInfo, "HT_EventKlassFieldInfoEvent", &[
("info_klass_id", "uint32_t", DataType::U32),
("field_type", "const char*", DataType::Str),
("field_name", "const char*", DataType::Str),
("size", "uint64_t", DataType::U64),
("data_type", "uint8_t", DataType::U8)]);
}
pub fn add_klass(&mut self, klass: EventKlass) {
self.klasses.entry(klass.get_id()).or_insert(klass);
}
pub fn get_klass_by_id(&self, id: u32) -> Option<&EventKlass> {
self.klasses.get(&id)
}
pub fn get_klass_by_id_mut(&mut self, id: u32) -> Option<&mut EventKlass> {
self.klasses.get_mut(&id)
}
pub fn get_klass_by_name(&self, name: &str) -> Option<&EventKlass> {
for (_, klass) in self.klasses.iter() {
if klass.get_name() == name {
return Some(klass)
}
}
None
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn get_klass_by_name_should_not_be_none_for_existing_klass() {
let name = String::from("test_name");
let mut registry = EventKlassRegistry::new();
registry.add_klass(EventKlass::new(99, name.clone()));
assert!(registry.get_klass_by_name(&name).is_some());
}
#[test]
fn get_klass_by_id_should_not_be_none_for_existing_klass() {
let klass_id = 99;
let mut registry = EventKlassRegistry::new();
registry.add_klass(EventKlass::new(klass_id, String::from("test_name")));
assert!(registry.get_klass_by_id(klass_id).is_some());
assert!(registry.get_klass_by_id_mut(klass_id).is_some());
}
#[test]
fn get_klass_by_name_should_be_none_if_not_exists() {
let registry = EventKlassRegistry::new();
assert!(registry.get_klass_by_name("test").is_none());
}
#[test]
fn check_core_event_klasses() {
for i in 1..4 {
assert!(CoreEventKlassId::is_core_klass(i));
}
assert!(!CoreEventKlassId::is_core_klass(5));
assert!(!CoreEventKlassId::is_core_klass(99));
}
}