Now they are represented by implementations of the log.Output interface
instead of just callbacks. This allows to add additional methods to it.
Mainly, it was done for purpose of Close method for flushing and closing
log files. This is important to make runtime logger reinitialization
(e.g. log rotation) possible.
Additionally, documentation now explains goroutine-safety of logger
objects.
It makes sense to allow having default of bool flag to true and
allow writing 'name no' to disable it. This allows getting rid of
"dont", "no" etc in names or certain directives which are meant to be
enabled by default. IMO 'do_x no' looks better than 'dont_do_x'
Allows faster and simpler implementation for cases when maddy
is running as a privileged user.
Automatic fallback to helper binary is not implemented since otherwise
config directive 'use_helper no' would make less sense and config.Map
does not support "enums" (true/false/not-specified) yet.
Closes#127.
Root package now contains only initialization code and 'dummy' module.
Each module now got its own package. Module packages are grouped by
their main purpose (storage/, target/, auth/, etc). Shared code is
placed in these "group" packages.
Parser for module references in config is moved into config/module.
Code shared by tests (mock modules, etc) is placed in testutils.
This allows more readable configuration files without additional
explanations in cases where a single module is used for multiple
purposes.
Also cleans up certain problems with modules that rely on block
names having certain semantics (e.g. endpoint modules).
* Drop most of the implicit defaults in favor of explicit configuration
We no longer follow caddy's "zero-configuration" approach. Mail is much
more complex than HTTP and we want to be explicit about things, always.
* Remove commented out directives from maddy.conf
This allows modules to reference each other during initialization
independently of configuration blocks order.
Also this allows us to initialize default modules in a more clean way.
All configuration directives now use underscores instead of dashes for
consistency with Caddy conventions.
Disallow defining multiple module instances with implicit name.
Remove global module.WaitGroup and add as field where it is necessary
(endpoint modules).
buf.Reset() and use rewind Reader in SMTP pipeline.
Rename several entities in code (NewModule => FuncNewModule, CfgTreeNode
=> Node, etc).
Also fix several warnings from linters.
Currently default pipeline contains only two delivery steps, but in
future it will include more complex dispatching logic for spam filters,
DKIM and features.
