syscall: refactor OsSysCalls for deeper errno latching #4111
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* Introduce SysCallIntResult, SysCallSizeResult and SysCallPtrResult * Refactor OsSysCalls routines to return appropriate SysCallResult types Signed-off-by: Venil Noronha <veniln@vmware.com>
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Signed-off-by: Venil Noronha <veniln@vmware.com>
| throw EnvoyException("failed to read proxy protocol (no bytes avail)"); | ||
| } | ||
| if (bytes_avail == 0) { | ||
| return false; | ||
| } | ||
| bytes_avail = std::min(size_t(bytes_avail), sizeof(buf_)); | ||
| bytes_avail = std::min(size_t(bytes_avail), proxy_protocol_header_.value().extensions_length_); | ||
| ssize_t nread = os_syscalls.recv(fd, buf_, bytes_avail, 0); | ||
| const Api::SysCallSizeResult result = os_syscalls.recv(fd, buf_, bytes_avail, 0); | ||
| ssize_t nread = result.rc_; |
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Do we nee the ssize_t local var here? Same elsewhere in this function? Is a similar simplification available any other places that I didn't notice?
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Thought it'd keep the code more readable. I can simplify it here and at other places if required.
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I would probably drop the local variables where possible, but I don't feel that strongly about it. (I think the code would stay readable as long as the return value variable name is readable).
Signed-off-by: Venil Noronha <veniln@vmware.com>
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* origin/master: (38 commits) test: add tests for corner-cases around sending requests before run() starts or after run() ends. (envoyproxy#4114) perf: reduce the memory usage of LC Trie construction (envoyproxy#4117) test: moving redundant code in websocket_integration_test to utilities (envoyproxy#4127) test: make YamlLoadFromStringFail less picky about error msg. (envoyproxy#4141) rbac: add rbac network filter. (envoyproxy#4083) fuzz: route lookup and header finalization fuzzer. (envoyproxy#4116) Set content-type and content-length (envoyproxy#4113) fault: use FractionalPercent for percent (envoyproxy#3978) test: Fix inverted exact match logic in IntegrationTcpClient::waitForData() (envoyproxy#4134) Added cluster_name to load assignment config for static cluster (envoyproxy#4123) ssl: refactor ContextConfig to use TlsCertificateConfig (envoyproxy#4115) syscall: refactor OsSysCalls for deeper errno latching (envoyproxy#4111) thrift_proxy: fix oneway bugs (envoyproxy#4025) Do not crash when converting YAML to JSON fails (envoyproxy#4110) config: allow unknown fields flag (take 2) (envoyproxy#4096) Use a jittered backoff strategy for handling HdsDelegate stream/connection failures (envoyproxy#4108) bazel: use GCS remote cache (envoyproxy#4050) Add thread local cache of overload action states (envoyproxy#4090) Added TCP healthcheck capabilities to the HdsDelegate (envoyproxy#4079) secret: add secret provider interface and use it for TlsCertificates (envoyproxy#4086) ... Signed-off-by: Snow Pettersen <snowp@squareup.com>
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Description:
This PR refactors
OsSysCallsfor deepererrnolatching. See #3819 for more information.SysCallIntResult,SysCallSizeResultandSysCallPtrResultOsSysCallsroutines to return appropriateSysCallResulttypesSigned-off-by: Venil Noronha veniln@vmware.com
Risk Level: Low
Testing: Existing tests suffice
Docs Changes: N/A
Release Notes: N/A