Adding upstream version 1.34.4.

Signed-off-by: Daniel Baumann <daniel@debian.org>

input.go

@@ -0,0 +1,23 @@
+package telegraf
+
+type Input interface {
+	PluginDescriber
+
+	// Gather takes in an accumulator and adds the metrics that the Input
+	// gathers. This is called every agent.interval
+	Gather(Accumulator) error
+}
+
+type ServiceInput interface {
+	Input
+
+	// Start the ServiceInput.  The Accumulator may be retained and used until
+	// Stop returns.
+	Start(Accumulator) error
+
+	// Stop stops the services and closes any necessary channels and connections.
+	// Metrics should not be written out to the accumulator once stop returns, so
+	// Stop() should stop reading and wait for any in-flight metrics to write out
+	// to the accumulator before returning.
+	Stop()
+}