Integrate Cobertura format and output as file in coverage container (#…

…1572)

* Integrate cobertura format and output as file in coverage container

* cobertura output file is txt, not json

* Format

* xml file not txt

* Improved syntax

src/agent/onefuzz-agent/src/tasks/coverage/generic.rs

@@ -11,6 +11,7 @@ use anyhow::{Context, Result};
 use async_trait::async_trait;
 use coverage::block::CommandBlockCov;
 use coverage::cache::ModuleCache;
+use coverage::cobertura::cobertura;
 use coverage::code::{CmdFilter, CmdFilterDef};
 use coverage::debuginfo::DebugInfo;
 use onefuzz::expand::{Expand, PlaceHolder};
@@ -30,6 +31,7 @@ use crate::tasks::heartbeat::{HeartbeatSender, TaskHeartbeatClient};
 const MAX_COVERAGE_RECORDING_ATTEMPTS: usize = 2;
 const COVERAGE_FILE: &str = "coverage.json";
 const SOURCE_COVERAGE_FILE: &str = "source-coverage.json";
+const COBERTURA_COVERAGE_FILE: &str = "cobertura-coverage.xml";
 const MODULE_CACHE_FILE: &str = "module-cache.json";
 
 const DEFAULT_TARGET_TIMEOUT: Duration = Duration::from_secs(5);
@@ -362,6 +364,16 @@ impl<'a> TaskContext<'a> {
             .await
             .with_context(|| format!("writing source coverage to {}", path.display()))?;
 
+        let path = self
+            .config
+            .coverage
+            .local_path
+            .join(COBERTURA_COVERAGE_FILE);
+        let cobertura_source_coverage = cobertura(src_coverage)?;
+        fs::write(&path, &cobertura_source_coverage)
+            .await
+            .with_context(|| format!("writing cobertura source coverage to {}", path.display()))?;
+
         self.config.coverage.sync_push().await?;
 
         Ok(())