// Reset resets the state of the source object so that it
// is ready to feed the filters
func (s *Source) Reset() {
if pdebug.Enabled {
g := pdebug.Marker("Source.Reset")
defer g.End()
}
s.OutputChannel = pipeline.OutputChannel(make(chan interface{}))
}
func NewRegexpFilter() *RegexpFilter {
return &RegexpFilter{
flags: regexpFlagList(defaultFlags),
name: "Regexp",
outCh: pipeline.OutputChannel(make(chan interface{})),
}
}
func (rf RegexpFilter) Clone() LineFilter {
return &RegexpFilter{
flags: rf.flags,
quotemeta: rf.quotemeta,
query: rf.query,
name: rf.name,
outCh: pipeline.OutputChannel(make(chan interface{})),
}
}
func (ecf ExternalCmdFilter) Clone() LineFilter {
return &ExternalCmdFilter{
args: ecf.args,
cmd: ecf.cmd,
enableSep: ecf.enableSep,
name: ecf.name,
outCh: pipeline.OutputChannel(make(chan interface{})),
thresholdBufsiz: ecf.thresholdBufsiz,
}
}
// Creates a new Source. Does not start processing the input until you
// call Setup()
func NewSource(in io.Reader, idgen lineIDGenerator, enableSep bool) *Source {
s := &Source{
in: in, // Note that this may be closed, so do not rely on it
enableSep: enableSep,
idgen: idgen,
ready: make(chan struct{}),
setupDone: make(chan struct{}),
setupOnce: sync.Once{},
start: make(chan struct{}, 1),
OutputChannel: pipeline.OutputChannel(make(chan interface{})),
}
s.Reset()
return s
}
func NewExternalCmdFilter(name string, cmd string, args []string, threshold int, idgen lineIDGenerator, enableSep bool) *ExternalCmdFilter {
if len(args) == 0 {
args = []string{"$QUERY"}
}
if threshold <= 0 {
threshold = DefaultCustomFilterBufferThreshold
}
return &ExternalCmdFilter{
args: args,
cmd: cmd,
enableSep: enableSep,
idgen: idgen,
name: name,
outCh: pipeline.OutputChannel(make(chan interface{})),
thresholdBufsiz: threshold,
}
}