tiny optimization

Author: korniltsev

src/encode/folded.rs

@@ -3,15 +3,15 @@ use crate::backend;
 
 use backend::types::{Report, EncodedReport};
 
-pub fn encode(reports: Vec<Report>) -> Vec<EncodedReport> {
+pub fn encode(reports: &Vec<Report>) -> Vec<EncodedReport> {
     reports.into_iter()
         .map(|r| {
             EncodedReport {
                 format: "folded".to_string(),
                 content_type: "binary/octet-stream".to_string(),
                 content_encoding: "".to_string(),
                 data: r.to_string().into_bytes(),
-                metadata: r.metadata,
+                metadata: r.metadata.to_owned(),
             }
         }).collect()
 }

src/encode/pprof.rs

@@ -80,7 +80,7 @@ impl PProfBuilder {
     }
 }
 
-pub fn encode(reports: Vec<Report>, sample_rate: u32, start_time_nanos: u64, duration_nanos: u64) -> Vec<EncodedReport> {
+pub fn encode(reports: &Vec<Report>, sample_rate: u32, start_time_nanos: u64, duration_nanos: u64) -> Vec<EncodedReport> {
     let mut b = PProfBuilder {
         strings: HashMap::new(),
         functions: HashMap::new(),
@@ -116,7 +116,7 @@ pub fn encode(reports: Vec<Report>, sample_rate: u32, start_time_nanos: u64, dur
             unit: milliseconds,
         })
     }
-    for report in &reports {
+    for report in reports {
         for (stacktrace, value) in &report.data {
             let mut sample = Sample {
                 location_id: vec![],

src/lib.rs

@@ -51,7 +51,7 @@ pub mod error;
 pub mod pyroscope;
 pub mod session;
 pub mod timer;
+pub mod encode;
 
 // Private modules
 mod utils;
-mod encode;

src/session.rs

@@ -162,8 +162,8 @@ impl Session {
     fn encode_reports(&self, reports: Vec<Report>) -> Vec<EncodedReport> {
         log::debug!(target: LOG_TAG, "Encoding {} reports to {:?}", reports.len(), self.config.report_encoding);
         match &self.config.report_encoding {
-            ReportEncoding::FOLDED => folded::encode(reports),
-            ReportEncoding::PPROF => pprof::encode(reports,
+            ReportEncoding::FOLDED => folded::encode(&reports),
+            ReportEncoding::PPROF => pprof::encode(&reports,
                                                    self.config.sample_rate,
                                                    self.from * 1_000_000,
                                                    (self.until - self.from) * 1_000_000,