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use prometheus_endpoint::{
register, CounterVec, Histogram, HistogramOpts, HistogramVec, Opts, PrometheusError, Registry,
U64,
};
use sp_runtime::traits::{Block as BlockT, NumberFor};
use crate::import_queue::{BlockImportError, BlockImportStatus};
#[derive(Clone)]
pub(crate) struct Metrics {
pub import_queue_processed: CounterVec<U64>,
pub block_verification_time: HistogramVec,
pub block_verification_and_import_time: Histogram,
pub justification_import_time: Histogram,
}
impl Metrics {
pub(crate) fn register(registry: &Registry) -> Result<Self, PrometheusError> {
Ok(Self {
import_queue_processed: register(
CounterVec::new(
Opts::new("import_queue_processed_total", "Blocks processed by import queue"),
&["result"],
)?,
registry,
)?,
block_verification_time: register(
HistogramVec::new(
HistogramOpts::new("block_verification_time", "Time taken to verify blocks"),
&["result"],
)?,
registry,
)?,
block_verification_and_import_time: register(
Histogram::with_opts(HistogramOpts::new(
"block_verification_and_import_time",
"Time taken to verify and import blocks",
))?,
registry,
)?,
justification_import_time: register(
Histogram::with_opts(HistogramOpts::new(
"justification_import_time",
"Time taken to import justifications",
))?,
registry,
)?,
})
}
pub fn report_import<B: BlockT>(
&self,
result: &Result<BlockImportStatus<NumberFor<B>>, BlockImportError>,
) {
let label = match result {
Ok(_) => "success",
Err(BlockImportError::IncompleteHeader(_)) => "incomplete_header",
Err(BlockImportError::VerificationFailed(_, _)) => "verification_failed",
Err(BlockImportError::BadBlock(_)) => "bad_block",
Err(BlockImportError::MissingState) => "missing_state",
Err(BlockImportError::UnknownParent) => "unknown_parent",
Err(BlockImportError::Cancelled) => "cancelled",
Err(BlockImportError::Other(_)) => "failed",
};
self.import_queue_processed.with_label_values(&[label]).inc();
}
pub fn report_verification(&self, success: bool, time: std::time::Duration) {
self.block_verification_time
.with_label_values(&[if success { "success" } else { "verification_failed" }])
.observe(time.as_secs_f64());
}
pub fn report_verification_and_import(&self, time: std::time::Duration) {
self.block_verification_and_import_time.observe(time.as_secs_f64());
}
}