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This commit does not change current application behavior. It adds new
ALLOW_BOOL, ALLOW_INT, ALLOW_STRING, and ALLOW_LIST flags which are available
to be used by new settings, without affecting parsing of any existing settings.
The new flags validate settings earlier on startup and provide more detailed
error messages to users.
The new flags also provide stricter error checking. For example, a double
negated option like -nosetting=0 is treated like an error instead of true, and
an unrecognized bool value like -setting=true is treated like an error instead
of false. The new flags also trigger errors if a non-list setting is specified
multiple times in the same section of a configuration file, instead of silently
ignoring later values.
The new flags also provide type information that allows ArgsManager
GetSettings() and GetSettingsList() methods to return typed integer and boolean
values instead of unparsed strings.
The changes have no effect on current application behavior because the new
flags are only used in unit tests. The existing ALLOW_ANY checks in the
CheckValueTest unit test confirm that no current validation or parsing behavior
is changing.
Update GetArg, GetArgs, GetBoolArg, and GetIntArg helper methods to work
conveniently with ALLOW_BOOL, ALLOW_INT, and ALLOW_STRING flags. This commit
does not change application behavior in any way because these flags are new
and currently only used in unit tests.
The GetArg methods are convenience wrappers around the GetSetting method. The
GetSetting method returns the originally parsed settings values in their
declared bool/int/string types, while the GetArg wrappers provide extra
type-coercion and default-value fallback features as additional conveniences
for callers.
This commit makes two changes to GetArg, GetArgs, GetBoolArg, and GetIntArg
helper methods when BOOL/INT/STRING flags are used:
1. GetArg methods will now raise errors if they are called with inconsistent
flags. For example, GetArgs will raise a logic_error if it is called on a
non-LIST setting, GetIntArg will raise a logic_error if it is called
on a non-INT setting.
2. GetArg methods will now avoid various type coersion footguns when they are
called on new BOOL/INT/STRING settings. Existing ALLOW_ANY settings are
unaffected. For example, negated settings will return "" empty strings
instead of "0" strings (in the past the "0" strings caused strangeness like
"-nowallet" options creating wallet files named "0"). The new behaviors are
fully specified and checked by the `CheckValueTest` unit test.
The ergonomics of the GetArg helper methods are subjective and the behaviors
they implement can be nitpicked and debated endlessly. But behavior of these
helper methods does not dictate application behavior, and they be bypassed by
calling GetSetting and GetSettingList methods instead. If it's necessary,
behavior of these helper methods can also be changed again in the future.
The changes have no effect on current application behavior because the new
flags are only used in unit tests. The `setting_args` unit test and ALLOW_ANY
checks in the `CheckValueTest` unit test are unchanged and confirm that
`GetArg` methods behave exactly the same (returning the same values and
throwing the same exceptions) for ALLOW_ANY flags before and after this change.
This change has no effect on behavior, and is basically just a documentation
change at this point. The ALLOW_LIST flag is currently ignored unless
ALLOW_BOOL, ALLOW_INT, or ALLOW_STRING flags are also present, and these flags
are not used yet.
-BEGIN VERIFY SCRIPT-
for f in `git grep -n 'GetArgs(' | grep -v _tests | sed -n 's/.*GetArgs("\([^"]\+\)".*/\1/p' | sort -u`; do
git grep -l -- "$f" | xargs sed -i "/AddArg(\"$f[=\"]/ s/ArgsManager::ALLOW_ANY/& | ArgsManager::ALLOW_LIST/g"
done
-END VERIFY SCRIPT-
- Remove ALLOW_LIST flag from bitcoin-wallet -wallet and -debug arguments. They
are list arguments for bitcoind, but single arguments for bitcoin-wallet.
- Add ALLOW_LIST flag to -includeconf arg (missed by scripted diff since it's
not accessed through GetArgs)
- Add ALLOW_LIST flag to -debug, -loglevel, -whitebind, and -whitelist args
(missed by scripted diff due to line breaks in AddArgs calls)
- Add ALLOW_LIST flag to -zmq args (missed by scripted diff due to programmatic
GetArgs calls)
This change has no effect on behavior, and is basically just a documentation
change at this point. The ALLOW_LIST flag is currently ignored unless
ALLOW_BOOL, ALLOW_INT, or ALLOW_STRING flags are also present, and these flags
are not used yet.
Previous behavior was nonsensical:
- If an empty -rpcauth="" argument was specified as the last command
line argument, it would cause all other -rpcauth arguments to be
ignored.
- If an empty -rpcauth="" argument was specified on the command line
followed by any nonempty -rpcauth argument, it would cause an error.
- If an empty "rpcauth=" line was specified after non-empty rpcauth line
it would cause an error.
- If an empty "rpcauth=" line in a config file was the entry in the
config file it would cause all rpcauth entries to be ignored, unless
the last command line argument was a nonempty -rpcauth argument, in
which case it would be ignored.
New behavior is simple:
- If an empty "rpcauth=" config line or -rpcauth="" command line
argument is used it will cause an error
Previous behavior was inconsistent: if -blockfilterindex or
-blockfilterindex="" arguments were specified they would normally enable all
block filter indexes, but could also trigger "Unknown -blockfilterindex value"
errors if followed by later -blockfilterindex arguments.
It was confusing that the same -blockfilterindex options could sometime trigger
errors and sometimes not depending on option position. It was also confusing
that an empty -blockfilterindex="" setting could enable all indexes even though
indexes are disabled by default.
New behavior is more straightforward:
- -blockfilterindex and -blockfilterindex=1 always enable indexes
- -noblockfilterindex and -blockfilterindex=0 always disable indexes
- -blockfilterindex="" is always an unknown value error
The meaning of these options no longer changes based on option position.
Prevent GetArg() from being called on ALLOW_LIST arguments, and GetArgs() from
being called on non-list arguments.
This checking was previously skipped unless typed INT/BOOL/STRING flags were
present, but now it's always done.
This change has no effect on external behavior. It is just supposed to enforce
internal consistency and prevent bugs caused by using the wrong GetArg method
to retrieve settings.
Enable error "Multiple values specified for -setting in same section of config
file.", for ALLOW_ANY settings that don't specify ALLOW_LIST.
Instead of silently ignoring settings, this change makes it an error to provide
an ambiguous config file that provides assigns multiple values to a
single-value setting. Change include release notes.
Also skip calling TestArgString in these cases since exact behavior retrieving
values is irrelevant when parsing values fails.
Also s/TestArgString/GetArg/ to be more efficient and direct, now that it's no
longer necessary to call with separation of ALLOW_LIST and non ALLOW_LIST
cases.
This commit has no effect on behavior because as of
https://github.com/bitcoin/bitcoin/pull/17493 it's not possible to specify
multiple values for single value settings in the config file.
🐙 This pull request conflicts with the target branch and needs rebase.
There hasn’t been much activity lately and the patch still needs rebase. What is the status here?
There hasn’t been much activity lately and the patch still needs rebase. What is the status here?
⌛ There hasn’t been much activity lately and the patch still needs rebase. What is the status here?
⌛ There hasn’t been much activity lately and the patch still needs rebase. What is the status here?
Labels
Refactoring
Needs rebase