SERVER-95930: Collect network diagnostics for failed tests (#28191)

GitOrigin-RevId: fc5c90c756d9cc21dbc4e55281bfa1d8b4a0a09b

etc/evergreen_yml_components/configuration.yml

@@ -86,6 +86,7 @@ post:
   - func: "attach docker logs"
   - func: "upload jstestfuzz minimized output"
   - func: "upload clang tidy results"
+  - func: "generate and upload network diagnostics"
   - func: "kill processes"
   - func: "save code coverage data"
   - func: "save local client logs"
@@ -117,6 +118,7 @@ post:
         system-resource-info.tgz
         ${report_file|src/report.json}
         ${archive_file|src/archive.json}
+        src/network_diagnostics.txt
   - func: "umount shared scons directory"
   - func: "umount tmp directory"
   - func: "cleanup FUSE watchdog"

etc/evergreen_yml_components/definitions.yml

@@ -660,6 +660,34 @@ functions:
         content_type: application/json
         display_name: clang_tidy_fixes.json
 
+  "generate network diagnostics": &generate_network_diagnostics
+    command: subprocess.exec
+    display_name: "get network diagnostics"
+    params:
+      binary: bash
+      args:
+        - "src/evergreen/run_python_script.sh"
+        - "evergreen/functions/get_network_diagnostics.py"
+
+  "upload network diagnostics": &upload_network_diagnostics
+    command: s3.put
+    dipslay_name: "upload network diagnostics"
+    params:
+      aws_key: ${aws_key}
+      aws_secret: ${aws_secret}
+      local_file: src/network_diagnostics.txt
+      remote_file: ${project}/${version_id}/${bv_future_git_tag|version}_network_diagnostics.txt
+      bucket: mciuploads
+      permissions: public-read
+      content_type: text/plain
+      display_name: Network Diagnostics - netstat output
+      optional: true
+
+  "generate and upload network diagnostics":
+    - *f_expansions_write
+    - *generate_network_diagnostics
+    - *upload_network_diagnostics
+
   "send benchmark results": &send_benchmark_results
     command: perf.send
     display_name: "send benchmark results"

evergreen/functions/get_network_diagnostics.py

@@ -0,0 +1,21 @@
+#!/usr/bin/env python3
+"""Generate network diagnostics information and generate a .txt file."""
+
+import pathlib
+import shutil
+import subprocess
+
+
+def generate_netstat():
+    if shutil.which("netstat") is None:
+        print('Command not found: netstat. Skipping "generate and upload network diagnostics".')
+        return
+
+    with open("network_diagnostics.txt", "w") as outfile:
+        subprocess.run(["netstat"], stdout=outfile, stderr=subprocess.STDOUT, check=True)
+
+
+if not pathlib.Path("resmoke_error_code").is_file():
+    print('resmoke_error_code not found. Skipping "generate and upload network diagnostics".')
+else:
+    generate_netstat()