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Copies part of the changes of ac89bb064aeea85a62b82a6daf0ecca7190a28b7
Change-Id: I9ce601875cd6d4db5eb1132d7835c5bab9f126d8
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The `write` name is ambiguous and could lead to some funny bugs like
https://github.com/NixOS/nix/pull/8173#issuecomment-1500009480. So
rename it to the more explicit `writeUnbuffered`.
Besides, this method shouldn't be (and isn't) used outside of the class
implementation, so mark it `protected`.
This makes it more symetrical to `BufferedSource` which uses a
`protected readUnbuffered` method.
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These were needed back in the pre-C++11 era because we didn't have
move semantics. But now we do.
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Based off on @dtzWill's #2276
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* libstore: `bz2` should not be linked
* libutil: `zlib.h` should not be included
Signed-off-by: Pamplemousse <xav.maso@gmail.com>
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This function doesn't support all compression methods (i.e. 'none' and
'br') so it shouldn't be exposed.
Also restore the original decompress() as a wrapper around
makeDecompressionSink().
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The S3 store relies on the ability to be able to decompress things with
an empty method, because it just passes the value of the Content-Encoding
directly to decompress.
If the file is not compressed, then this will cause the compression
routine to get confused.
This caused NixOS/nixpkgs#120120.
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This has been broken since faa31f40846f7a4dbc2487d000b112a6aef69d1b.
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Closes #3256
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This didn't work anymore since decompression was only done in the
non-coroutine case.
Decompressors are now sinks, just like compressors.
Also fixed a bug in bzip2 API handling (we have to handle BZ_RUN_OK
rather than BZ_OK), which we didn't notice because there was a missing
'throw':
if (ret != BZ_OK)
CompressionError("error while compressing bzip2 file");
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Bzip2's 'avail_in' parameter is declared as an unsigned int, so
assigning a size_t length to it led to silent truncation.
Fixes #2111.
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This allows decompression to happen in O(1) memory.
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by default.
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some comments about possible improvements wrt memory usage/threading.
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the case of hydra where the overhead of single threaded encoding is more
noticeable e.g most of the time spent in "Sending inputs"/"Receiving outputs"
is due to compression while the actual upload to the binary cache seems
to be negligible.
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* Look for both 'brotli' and 'bro' as external command,
since upstream has renamed it in newer versions.
If neither are found, current runtime behavior
is preserved: try to find 'bro' on PATH.
* Limit amount handed to BrotliEncoderCompressStream
to ensure interrupts are processed in a timely manner.
Testing shows negligible performance impact.
(Other compression sinks don't seem to require this)
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Relevant RFC: NixOS/rfcs#4
$ ag -l | xargs sed -i -e "/\"/s/’/'/g;/\"/s/‘/'/g"
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Fixes #1285.
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For example, if we call brotli with an empty input, it shouldn't read
from the caller's stdin.
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You can now set the store parameter "text-compression=br" to compress
textual files in the binary cache (i.e. narinfo and logs) using
Brotli. This sets the Content-Encoding header; the extension of
compressed files is unchanged.
You can separately specify the compression of log files using
"log-compression=br". This is useful when you don't want to compress
narinfo files for backward compatibility.
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nix: src/libutil/compression.cc:142: virtual nix::XzSink::~XzSink(): Assertion `finished' failed.
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Build logs on cache.nixos.org are compressed using Brotli (since this
allows them to be decompressed automatically by Chrome and Firefox),
so it's handy if "nix log" can decompress them.
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This reverts commit f78126bfd6b6c8477fcdbc09b2f98772dbe9a1e7. There
really is no need for such a massive change...
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As a side effect, this ensures that signatures are propagated when
copying paths between stores.
Also refactored import/export to make use of this.
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This allows readFile() to indicate that a file doesn't exist, and
might eliminate some large string copying.
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This is used by the Hydra queue runner, but since it may also be
useful for the C++ rewrite of nix-push, I'm putting it here.
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Otherwise we might leak memory.
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`BUFSIZ` is defined in header `<cstdio>`.
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