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use crate::event::DataType; use crate::event_klass::EventKlass; #[derive(Copy, Clone)] pub enum CoreEventKlassId { Endianness = 0, Base = 1, KlassInfo = 2, FieldInfo = 3, } 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)); } }