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// Copyright 2017 Palantir Technologies, Inc. // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. //! Span reporters. use Span; /// A reporter consumes Zipkin spans and reports them. /// /// For example, the reporter may log the span information to a file, or send /// it over the network to a collection service. pub trait Report { /// Reports a span. fn report(&self, span: &Span); } /// A `Report`er which does nothing. pub struct NopReporter; impl Report for NopReporter { fn report(&self, _: &Span) {} } /// A `Report`er which logs the `Span` at the `info` level. /// /// The `Span` is simply logged in its `Debug` representation which is not /// stable, so this reporter is only useful for testing. pub struct LoggingReporter; impl Report for LoggingReporter { fn report(&self, span: &Span) { info!("{:?}", span); } }