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55 lines
1.7 KiB
Rust
55 lines
1.7 KiB
Rust
use crate::context::Context;
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use crate::error;
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use crate::error::Error;
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use crate::event::{Event, EventType};
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use crate::payload::IntoPayload;
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use std::mem;
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pub(crate) struct EventMetadata<P: IntoPayload> {
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pub(crate) event: Option<Event>,
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pub(crate) ctx: Option<Context>,
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pub(crate) event_namespace: Option<Option<String>>,
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pub(crate) event_name: Option<String>,
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pub(crate) res_id: Option<Option<u64>>,
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pub(crate) event_type: Option<EventType>,
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pub(crate) payload: Option<P>,
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}
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impl<P: IntoPayload> EventMetadata<P> {
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pub fn get_event(&mut self) -> error::Result<&Event> {
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if self.event.is_none() {
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self.build_event()?;
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}
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Ok(self.event.as_ref().unwrap())
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}
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pub fn take_event(mut self) -> error::Result<Option<Event>> {
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if self.event.is_none() {
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self.build_event()?;
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}
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Ok(mem::take(&mut self.event))
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}
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fn build_event(&mut self) -> error::Result<()> {
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let ctx = self.ctx.take().ok_or(Error::InvalidState)?;
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let event = self.event_name.take().ok_or(Error::InvalidState)?;
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let namespace = self.event_namespace.take().ok_or(Error::InvalidState)?;
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let payload = self.payload.take().ok_or(Error::InvalidState)?;
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let res_id = self.res_id.take().ok_or(Error::InvalidState)?;
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let event_type = self.event_type.take().ok_or(Error::InvalidState)?;
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let payload_bytes = payload.into_payload(&ctx)?.into();
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let event = Event::new(
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namespace,
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event.to_string(),
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payload_bytes,
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res_id,
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event_type,
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);
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self.event = Some(event);
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Ok(())
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}
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}
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