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gerrit-public.fairphone.software / platform / packages / modules / DnsResolver / e655b1d82201b4885a27a54a8fedfbe458257962
commite655b1d82201b4885a27a54a8fedfbe458257962[log] [tgz]
authorMike Yu <yumike@google.com>Wed Aug 28 17:49:59 2019 +0800
committerMike Yu <yumike@google.com>Mon Oct 21 15:29:54 2019 +0800
treef0ba775dd52d239acf6042104d12c39d3fbfcfd5
parent7803769cacfd23dc014dd4a15edcb4e9f8ccd670 [diff]
Modularize resolver statistics

The extendibility of the legacy resolver statistics is limited because
it was originally designed for libc, which is hard to implement to
support other types of DNS, e.g. DNS-over-TLS. Therefore, DnsStats
is introduced to manage the statistics in a more general way.

DoT statistics is now available from DnsStats and is shown in
dumpsys dnsresolver.

Example of output from dumpsys dnsresolver:

Server statistics: (total, RTT avg, {rcode:counts}, last update)
  over UDP
    8.8.4.4 <no data>
    8.8.8.8 <no data>
    2001:4860:4860::8844 (7, 2201ms, [NOERROR:4 TIMEOUT:3 ], 2s)
    2001:4860:4860::8888 (3, 11ms, [NOERROR:3 ], 4s)
  over TLS
    <no server>
  over TCP
    8.8.4.4 <no data>
    8.8.8.8 <no data>
    2001:4860:4860::8844 <no data>
    2001:4860:4860::8888 <no data>

Bug: 140286585
Test: atest --include-subdirs packages/modules/DnsResolver
Test: checked output in dumpsys dnsresolver
Change-Id: I73f0108d5e9bb493cf7eda68252f5a0922149a98
11 files changed
tree: f0ba775dd52d239acf6042104d12c39d3fbfcfd5
  1. aidl/
  2. apex/
  3. binder/
  4. include/
  5. tests/
  6. .clang-format ⇨ ../../../build/soong/scripts/system-clang-format
  7. .editorconfig
  8. Android.bp
  9. Dns64Configuration.cpp
  10. Dns64Configuration.h
  11. DnsProxyListener.cpp
  12. DnsProxyListener.h
  13. DnsResolver.cpp
  14. DnsResolver.h
  15. dnsresolver_binder_test.cpp
  16. DnsResolverService.cpp
  17. DnsResolverService.h
  18. DnsStats.cpp
  19. DnsStats.h
  20. DnsStatsTest.cpp
  21. DnsTlsDispatcher.cpp
  22. DnsTlsDispatcher.h
  23. DnsTlsQueryMap.cpp
  24. DnsTlsQueryMap.h
  25. DnsTlsServer.cpp
  26. DnsTlsServer.h
  27. DnsTlsSessionCache.cpp
  28. DnsTlsSessionCache.h
  29. DnsTlsSocket.cpp
  30. DnsTlsSocket.h
  31. DnsTlsSocketFactory.h
  32. DnsTlsTransport.cpp
  33. DnsTlsTransport.h
  34. getaddrinfo.cpp
  35. getaddrinfo.h
  36. gethnamaddr.cpp
  37. gethnamaddr.h
  38. hostent.h
  39. IDnsTlsSocket.h
  40. IDnsTlsSocketFactory.h
  41. IDnsTlsSocketObserver.h
  42. libnetd_resolv.map.txt
  43. LockedQueue.h
  44. NOTICE
  45. OWNERS
  46. PREUPLOAD.cfg
  47. PrivateDnsConfiguration.cpp
  48. PrivateDnsConfiguration.h
  49. README-DoT.md
  50. README.md
  51. res_cache.cpp
  52. res_comp.cpp
  53. res_debug.cpp
  54. res_debug.h
  55. res_init.cpp
  56. res_init.h
  57. res_mkquery.cpp
  58. res_query.cpp
  59. res_send.cpp
  60. res_send.h
  61. res_stats.cpp
  62. resolv_cache.h
  63. resolv_cache_unit_test.cpp
  64. resolv_integration_test.cpp
  65. resolv_private.h
  66. resolv_tls_unit_test.cpp
  67. resolv_unit_test.cpp
  68. ResolverController.cpp
  69. ResolverController.h
  70. ResolverEventReporter.cpp
  71. ResolverEventReporter.h
  72. ResolverStats.h
  73. sethostent.cpp
  74. stats.proto
  75. TEST_MAPPING
README.md

Logging

This code uses LOG(X) for logging. Log levels are VERBOSE,DEBUG,INFO,WARNING and ERROR. The default setting is WARNING and logs relate to WARNING and ERROR will be shown. If you want to enable the DEBUG level logs, using following command. adb shell service call dnsresolver 10 i32 1 VERBOSE 0 DEBUG 1 INFO 2 WARNING 3 ERROR 4 Verbose resolver logs could contain PII -- do NOT enable in production builds.