Merge pull request #85 from SokolAndrey/as/prometheus_reporter

Add PrometheusReporter implementation

README.md

@@ -59,6 +59,7 @@ All artifacts are published under the group `com.uber.m3`.
 1. `tally-statsd`: The tally StatsD reporter
 1. `tally-core`: tally core functionality that includes interfaces and utilities to report metrics to M3
 1. `tally-example`: Example usages with different reporters
+1. `tally-prometheus`: The tally Prometheus reporter
 
 ## Versioning
 We follow semantic versioning outlined [here](http://semver.org/spec/v2.0.0.html). In summary,

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,6 @@
+#Fri Dec 25 03:30:51 CET 2020
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.0-all.zip
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.0-bin.zip
+zipStoreBase=GRADLE_USER_HOME

prometheus/build.gradle

@@ -0,0 +1,26 @@
+// Copyright (c) 2021 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+description = 'tally Prometheus reporter'
+
+dependencies {
+    compile project(':tally-core')
+    compile('io.prometheus:simpleclient:0.9.0')
+}