Add flags when open file by scw00 · Pull Request #7445 · envoyproxy/envoy

scw00 · 2019-07-02T05:37:12Z

Add flags for open method. So user can use it with read only mode or write only mode.

Risk Level: Low
Testing: unit_tests (under linux platform)
Docs Changes: no docs change
Release Notes:
[Optional Fixes #Issue] no issue
[Optional Deprecated:]

scw00 · 2019-07-02T09:22:57Z

Hi, it seems the clang_tidy check run win32 implementation under linux platform. And I am not sure how to fix that.

/source/source/common/filesystem/win32/filesystem_impl.cc:2:10: error: 'io.h' file not found [clang-diagnostic-error]
#include <io.h>
         ^
Suppressed 2 warnings (1 in non-user code, 1 due to line filter).

mattklein123 · 2019-07-03T23:22:17Z

@scw00 thanks for the contribution. Can you describe the purpose of this change? AFAICT the new functionality is not used? Are you planning on a follow up change?

scw00 · 2019-07-04T00:08:01Z

Hi @mattklein123 . I am trying to implement the static file filter which return static file from local fs. But I didn't found any appropriate structure for reading a file. It is the first step to implement the opening method with reading only flag.

scw00 · 2019-07-07T01:26:04Z

Updated. For using std::bitset and set default value to open method.

mattklein123

Thanks, a few high level comments to get started. Please also check clang-tidy and format.

/wait

include/envoy/filesystem/filesystem.h

source/common/filesystem/file_shared_impl.cc

ci/run_clang_tidy.sh

source/common/filesystem/posix/filesystem_impl.cc

source/common/filesystem/win32/filesystem_impl.cc

mattklein123

Cool, thanks for working on this. A few small comments otherwise LGTM.

/wait

source/common/filesystem/file_shared_impl.cc

source/common/filesystem/posix/filesystem_impl.cc

test/common/filesystem/filesystem_impl_test.cc

mattklein123

LGTM with some nits, thanks.

/wait

source/common/access_log/access_log_manager_impl.cc

source/common/filesystem/posix/filesystem_impl.cc

source/common/filesystem/win32/filesystem_impl.cc

mattklein123 · 2019-07-30T23:13:11Z

test/common/filesystem/filesystem_impl_test.cc

Please use the default flags function that is already defined, same elsewhere (I already commented on this I think).

I'm not sure I can use the default function which is defined in access_log_manager_impl.h. file_system_test should not dependent on other implementations .

mattklein123

Thanks, LGTM. @jmarantz any further comments?

jmarantz

sorry I should've chimed in earlier; I do have some questions.

jmarantz · 2019-07-31T20:11:47Z

source/common/access_log/access_log_manager_impl.h

Declare this method static; it does not appear to require this.

Thanks and will do.

jmarantz · 2019-07-31T20:12:49Z

source/common/filesystem/posix/filesystem_impl.cc

You reference 'perm' in this PR a few times; can we spell that out? I think it might mean "permanent" but I'm not sure.

You mean move this into shared interface . It seems contradictory to previous changes, see
#7445 (comment)

This is also why I make the PermAndFlags into platform implementation.

Oh it's hard to see exactly what Matt had an issue with because you squashed commits. In general please try to avoid that because we lose the comment history.

I still don't understand the meaning of 'perm'. But looking at how it's used here I retract my "make part of the interface" suggestion, and instead suggest using the correct type and name in posix for the 3rd arg to open: mode_t mode

jmarantz · 2019-07-31T20:13:54Z

source/common/filesystem/posix/filesystem_impl.h

Does it make sense to put FlagsAndPerm in a shared interface, rather than repeating it from win32 and posix?

Because the translateFlags method is platform specified function ( the translateFlags is in the platform class not in shared interface). So the implementation should have their own flags and perm or other something more than this two flags.

But currently we only care about the perm and flags, so I'm ok with that . And will change.

s/perm/mode/ and s/int/mode_t/ for the mode arg?

source/common/access_log/access_log_manager_impl.cc

source/common/filesystem/posix/filesystem_impl.cc

test/common/filesystem/filesystem_impl_test.cc

source/common/access_log/access_log_manager_impl.cc

source/common/filesystem/posix/filesystem_impl.cc

jmarantz · 2019-08-01T00:57:33Z

source/common/filesystem/win32/filesystem_impl.cc

ah I finally figured out what 'perm' meant by reading the MS docs: https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/open-wopen?view=vs-2019 -- it means "permissions".

but there it's called pmode, not perm.

Thanks and will change

jmarantz · 2019-08-01T00:58:20Z

source/common/filesystem/win32/filesystem_impl.h

jmarantz · 2019-08-01T02:03:59Z

source/common/filesystem/posix/filesystem_impl.h

nit: end member variables with _

https://github.com/envoyproxy/envoy/blob/master/STYLE.md

Signed-off-by: cwsong <cwsong@iflytek.com>

scw00 · 2019-08-01T04:50:12Z

/retest

repokitteh-read-only · 2019-08-01T04:50:14Z

🤷‍♀️ nothing to rebuild.

🐱

Caused by: a #7445 (comment) was created by @scw00.

see: more, trace.

dio · 2019-08-01T05:03:25Z

/azp run envoy-macos

azure-pipelines · 2019-08-01T05:03:33Z

Azure Pipelines successfully started running 1 pipeline(s).

scw00 · 2019-08-01T05:16:04Z

Thanks @dio

scw00 · 2019-08-02T00:23:14Z

Hi @mattklein123 @jmarantz thanks for your comments. And Can I get another approve ?

scw00 · 2019-08-02T00:46:01Z

Thanks

scw00 force-pushed the open_reconstruct branch 4 times, most recently from 94d066a to 72e0a14 Compare July 2, 2019 06:51

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Add flag when open file

85da87e

Signed-off-by: cwsong <cwsong@iflytek.com>

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jmarantz merged commit dd50110 into envoyproxy:master Aug 2, 2019

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