This allows code to run after the return type has been generated in the case where it is an expression.
No new functionality here yet, but this will be used by a future commit that audits memory usage.
There is no need to process the stats so a KeyValue is overkill.
Also remove the performance tests that check the stat totals since this is covered in the unit tests.
Most of these looked like copy/paste from a prior required strCatFmt() call.
There is no issue here since strCatFmt() works the same in these cases, but using strCat()/strCatZ() is more efficient.
The vast majority of Strings are never modified so for most cases allocate memory for the string with the object. This results in one allocation in most cases instead of two. Use strNew() if strCat*() functions are needed.
Update varNewStr() in the same way since String Variants can never be modified. This results in one allocation in all cases instead of three. Also update varNewStrZ() to use STR() instead of strNewZ() to save two more allocations.
Replace all instances of strNew("") with strNew() and use strNewZ() for non-empty zero-terminated strings. Besides saving a useless parameter, this will allow smarter memory allocation in a future commit by signaling intent, in general, to append or not.
In the tests use STRDEF() or VARSTRDEF() where more appropriate rather than blindly replacing with strNewZ(). Also replace strLstAdd() with strLstAddZ() where appropriate for the same reason.
Centralize the formatting of the configuration value for display to the user or passing on a command line.
For the new functions, if the value was set by the user via the command line, config, etc., then that exact value will be displayed. This makes it easier for the user to recognize the value and saves having to format it into something reasonable, especially for time and size option types.
Note that cfgOptTypeHash and cfgOptTypeList option types are not supported by these functions, but they are generally not displayed to the user as a whole.
This also fixes a bug in config/load.c where time values where not being formatted correctly in an error message.
Validity by command was not granular enough so numerous options needed be marked internal so users would not stumble across them. Options were also needlessly being passed to roles that had no use for them.
Introduce per-role validity lists that depend on what roles are valid per command. Also add a check to ensure that only valid roles are used with a command.
This commit adds the functionality but does not introduce any new behavior, i.e. all options are valid for all roles that the command is valid for. A subsequent commit will introduce the new role restrictions to make the changes easier to audit.
Data required for parsing was spread between the config and defined modules, mostly for historical reasons because the same data was used by Perl.
Requiring all the parse rules to be accessed with function interfaces makes the code more complicated and new rules harder to implement.
Instead, move the data to the parse module so in the most complex cases no interface functions are needed. This reduces the total amount of code and paves the way for more complex parse rules.
The C code does not use doubles to represent seconds like the Perl code did so time can be represented as an integer which reduces the number of data types that config has to understand.
Also remove Variant doubles since they are no longer used.
Note that not all double code was removed since we still need to display times to the user in seconds and it is possible for the times to be fractional. In the future this will likely be simplified by storing the original user input and using that value when the time needs to be displayed.
Refactor the code to allow a dynamic number of indexes for indexed options, e.g. pg-path. Our reliance on getopt_long() still limits the number of indexes we can have per group, but once this limitation is removed the rest of the code should be happy with dynamic numbers of indexes (with a reasonable maximum).
Add an option to set a default in each group. This was previously handled by the host-id option but now there is a specific option for each group, pg and repo. These remain internal until they can be fully tested with multi-repo support. They are fully tested for internal usage.
Remove the ConfigDefineOption enum and use the ConfigOption enum instead. They are now equal since the indexed options (e.g. cfgOptRepoHost2) have been removed from ConfigOption.
Remove the config/config test module and add required tests to the config/parse test module. Parsing is now the only way to load a config so this removes some redundancy.
Split new internal config structures and functions into a new header file, config.intern.h. More functions will need to be moved over from config.h but that will need to be done in a future commit to reduce churn.
Add repoIdx to repoIsLocal() and storageRepo*(). Multi-repository support requires that repo locality and storage be accessible by index. This allows, for example, multiple repos to be iterated in a loop. This could be done in a separate commit but doesn't seem worth it since the code is related.
Remove the type parameter from storageRepoGet(). This parameter existed solely to provide coverage for the case where the storage type was invalid. A better pattern is to check that the type is S3 once all other types have been ruled out.
The tests were originally written by loading values directly into the configuration before the parser was available.
Update to use harnessCfgLoadRaw() to simplify the tests and make them compatible with upcoming config changes.
Note that some unreachable conditions were removed since they could not be reached via a parsed config, only by munging values directly into the config. cfgOptionTest(optionId) was removed because a non-default value must always be set. cfgOptionValid(cfgOptLogTimestamp) was removed because it is true for all commands except for cfgCmdNone, which is checked with an assert.
This has always been equivalent to the ConfigCommand enum so it just adds complexity.
It was created for symmetry with ConfigDefineOption, which will also be removed soon.
Currently each module that needs to collect statistics implements custom code to do so. This is cumbersome.
Create a general purpose module for collecting and reporting statistics. Statistics are output in the log at detail level, but there are other uses they could be put to eventually.
No new functionality is added. This is just a drop-in replacement for the current statistics, with the advantage of being more flexible.
The new stats are slower because they involve a list lookup, but performance testing shows stats can be updated at about 40,000/ms which seems fast enough for our purposes.
Following up on 111d33c, implement the new interfaces for socket client/session. Now HTTP objects can be used over TLS or plain sockets.
This required adding ioSessionFd() and ioSessionRole() to provide the functionality of sckSessionFd() and sckSessionType(). sckClientHost() and sckClientPort don't make sense in a generic interface so they were replaced with ioSessionName().
We use the Z suffix in many functions to indicate that we are expecting a zero-terminated string so make this function conform to the pattern.
As a bonus the new name is a bit shorter, which is a good quality in a commonly-used function.
strCat() did not follow our convention of appending Z to functions that accept zero-terminated strings rather than String objects.
Add strCatZ() to accept zero-terminated strings and update strCat() to accept String objects.
Use LF_STR where appropriate but don't use other String constants because they do not improve readability.
This has been the policy for some time but due to migration pressure only new functions and refactors have been following this rule. Now it seems sensible to make a clean sweep and move all the comments that have not been moved already (i.e. most of them).
Only obvious typos and gross inaccuracies in the comments have been fixed. For this most part this was a copy and paste operation.
Useless comments, e.g. "New object", were not copied. Even so, there are surely many deficient comments left.
Some rearranging was done where needed and functions were placed in the proper sections, e.g. "Constructors", "Functions", etc.
A few function prototypes were found that not longer had an implementation. These were removed, but there may be more.
The coding document has been updated to reflect this policy, which is not new but has never been documented.
This functionality was embedded into TlsClient but that was starting to get unwieldy.
Add SocketClient to contain all socket-related client functionality.
The local, remote, archive-get-async, and archive-push-async commands were used to run functionality that was not directly available to the user. Unfortunately that meant they would not pick up options from the command that the user expected, e.g. backup, archive-get, etc.
Remove the internal commands and add roles which allow pgBackRest to determine what functionality is required without implementing special commands. This way the options are loaded from the expected command section.
Since remote is no longer a specific command with its own options, more manipulation is required when calling remote. This might be something we can improve in the config system but it may be worth leaving as is because it is a one-off, for now at least.
Previously, options were being filtered based on what was currently valid. For chained commands (e.g. backup then expire) some options may be valid for the first command but not the second.
Filter based on the command definition rather than what is currently valid to avoid logging options that are not valid for subsequent commands. This reduces the number of options logged and will hopefully help avoid confusion and expect log churn.
Pre-calculate the value used by logAny() to improve performance and make it more likely to be inlined.
Move IF_LOG_ANY() into LOG_INTERNAL() to simplify the macros and improve performance of LOG() and LOG_PID(). If the message has no chance of being logged there's no reason to call logInternal().
Rename logWill() to logAny() because it seems more intuitive.
Use autoconf to provide a basic configure script. WITH_BACKTRACE is yet to be migrated to configure and the unit tests still use a custom Makefile.
Each C file must include "build.auto.conf" before all other includes and defines. This is enforced by test.pl for includes, but it won't detect incorrect define ordering.
Update packages to call configure and use standard flags to pass options.
Rename FUNCTION_DEBUG_* macros to FUNCTION_LOG_* to more accurately reflect what they do. Further rename FUNCTION_DEBUG_RESULT* macros to FUNCTION_LOG_RETURN* to make it clearer that they return from the function as well as logging. Leave FUNCTION_TEST_* macros as they are.
Consolidate the various ASSERT* macros into a single ASSERT macro that is always compiled out of production builds. It was difficult to figure out when an assert would be checked with all the different types in play. When ASSERTs are compiled in they will always be checked regardless of the log level -- tying these two concepts together was not a good idea.
A return code of 1 from the archive-get was being logged as an error message at info level but otherwise worked correctly.
Also improve info messages when an archive segment is or is not found.
Low-level functions only include stack trace in test builds while higher-level functions ship with stack trace built-in. Stack traces include all parameters passed to the function but production builds only create the parameter list when the log level is set high enough, i.e. debug or trace depending on the function.
The Perl process was exiting directly when called but that interfered with proper locking for the forked async process. Now Perl returns results to the C process which handles all errors, including signals.
Move command begin to C except when it must be called after another command in Perl (e.g. expire after backup). Command begin logs correctly for complex data types like hash and list. Specify which commands will log to file immediately and set the default log level for log messages that are common to all commands. File logging is initiated from C.
