Created
January 28, 2023 16:36
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/// Add new data source with custom alias, and optionally make it default. | |
pub fn add( | |
&self, | |
alias: &str, | |
data_handler: Box<dyn DataHandler>, | |
mut cache_handler: Box<dyn CacheHandler>, | |
make_default: bool, | |
callback: Option<mpsc::Sender<SrcAddStatus>>, | |
) -> Result<()> { | |
log::info!("adding source with alias \"{}\", default={}", alias, make_default); | |
log::info!("using {:?} as data handler", data_handler); | |
log::info!("using {:?} as cache handler", cache_handler); | |
if self.exists(alias) { | |
if callback.is_some() { | |
callback.as_ref().unwrap().send(SrcAddStatus::Done).unwrap(); | |
} | |
return Err(Error::new(format!("source with alias \"{}\" already exists", alias))); | |
} | |
self.lock_alias(alias); | |
let dv = get_data_version(&data_handler); | |
if need_cache_regen(dv.clone(), &mut cache_handler) { | |
if callback.is_some() { | |
callback.as_ref().unwrap().send(SrcAddStatus::Regenerating).unwrap(); | |
} | |
let ch_data = regen_cache(&data_handler).map_err(|e| { | |
self.unlock_alias(alias); | |
e | |
})?; | |
update_cache(dv, &mut cache_handler, ch_data); | |
} | |
self.add_source(alias, cache_handler, make_default); | |
self.unlock_alias(alias); | |
if callback.is_some() { | |
callback.as_ref().unwrap().send(SrcAddStatus::Done).unwrap(); | |
} | |
Ok(()) | |
} |
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