daemon: Add gzip log compression.

* nix/nix-daemon/guix-daemon.cc (GUIX_OPT_LOG_COMPRESSION): New macro.
(options): Mark "disable-log-compression" as hidden and add
"log-compression".
(parse_opt): Handle GUIX_OPT_LOG_COMPRESSION.
* nix/libstore/build.cc (DerivationGoal): Add 'gzLogFile'.
(openLogFile): Initialize it when 'logCompression' is COMPRESSION_GZIP.
(closeLogFile, handleChildOutput): Honor 'gzLogFile'.
* nix/libstore/globals.hh (Settings)[compressLog]: Remove.
[logCompression]: New field.
(CompressionType): New enum.
* nix/libstore/globals.cc (Settings::Settings): Initialize it.
(update): Remove '_get' call for 'compressLog'.
* nix/local.mk (guix_daemon_LDADD, guix_register_LDADD): Add -lz.
* guix/store.scm (log-file): Handle '.gz' log files.
* tests/guix-daemon.sh: Add test with '--log-compression=gzip'.
* doc/guix.texi (Invoking guix-daemon): Adjust accordingly.
* config-daemon.ac: Check for libz and zlib.h.

1 files changed, 2 insertions, 2 deletions

diff --git a/nix/libstore/globals.cc b/nix/libstore/globals.cc
index 65dad24d91..82d528dc98 100644
--- a/nix/libstore/globals.cc
+++ b/nix/libstore/globals.cc
@@ -45,7 +45,7 @@ Settings::Settings()
     useSshSubstituter = false;
     impersonateLinux26 = false;
     keepLog = true;
-    compressLog = true;
+    logCompression = COMPRESSION_BZIP2;
     maxLogSize = 0;
     cacheFailure = false;
     pollInterval = 5;
@@ -162,7 +162,7 @@ void Settings::update()
     _get(useChroot, "build-use-chroot");
     _get(impersonateLinux26, "build-impersonate-linux-26");
     _get(keepLog, "build-keep-log");
-    _get(compressLog, "build-compress-log");
+    // _get(logCompression, "build-log-compression");
     _get(maxLogSize, "build-max-log-size");
     _get(cacheFailure, "build-cache-failure");
     _get(pollInterval, "build-poll-interval");