/**
* 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.
*/
package com.seyren.core.util.graphite;
import static com.github.restdriver.clientdriver.RestClientDriver.*;
import static org.hamcrest.MatcherAssert.*;
import static org.hamcrest.Matchers.*;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.math.BigDecimal;
import java.util.regex.Pattern;
import org.junit.After;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.github.restdriver.clientdriver.ClientDriverRule;
import com.seyren.core.util.config.SeyrenConfig;
public class GraphiteHttpClientTest {
private static final ObjectMapper MAPPER = new ObjectMapper();
@Rule
public ExpectedException thrown = ExpectedException.none();
@Rule
public ClientDriverRule clientDriver = new ClientDriverRule();
private GraphiteHttpClient graphiteHttpClient;
@Before
public void before() {
graphiteHttpClient = new GraphiteHttpClient(seyrenConfig(clientDriver.getBaseUrl()));
}
@After
public void after() {
System.clearProperty("GRAPHITE_URL");
}
@Test
public void requestingJsonCallsThroughToGraphiteCorrectly() throws Exception {
String response = "[{\"target\": \"service.error.1MinuteRate\", \"datapoints\": [[0.06, 1337453460]]}]";
clientDriver.addExpectation(
onRequestTo("/render/")
.withParam("from", "-11minutes")
.withParam("until", "-1minutes")
.withParam("uniq", Pattern.compile("[0-9]+"))
.withParam("format", "json")
.withParam("target", "service.error.1MinuteRate"),
giveResponse(response, "application/json"));
JsonNode node = graphiteHttpClient.getTargetJson("service.error.1MinuteRate");
assertThat(node, is(MAPPER.readTree(response)));
}
@Test
public void requestingJsonCallsWithFromAndUntilThroughToGraphiteCorrectly() throws Exception {
String response = "[{\"target\": \"service.error.count\", \"datapoints\": [[32, 1337453460]]}]";
clientDriver.addExpectation(
onRequestTo("/render/")
.withParam("from", "-5minutes")
.withParam("until", "now")
.withParam("uniq", Pattern.compile("[0-9]+"))
.withParam("format", "json")
.withParam("target", "service.error.count"),
giveResponse(response, "application/json"));
JsonNode node = graphiteHttpClient.getTargetJson("service.error.count", "-5minutes", "now");
assertThat(node, is(MAPPER.readTree(response)));
}
@Test
public void exceptionGettingDataFromGraphiteIsHandled() throws Exception {
thrown.expect(GraphiteReadException.class);
graphiteHttpClient = new GraphiteHttpClient(seyrenConfig("http://unknown"));
graphiteHttpClient.getTargetJson("service.*.1MinuteRate");
}
@Test
public void authIsAddedWhenUsernameAndPasswordAreProvided() throws Exception {
System.setProperty("GRAPHITE_USERNAME", "seyren");
System.setProperty("GRAPHITE_PASSWORD", "s3yr3N");
graphiteHttpClient = new GraphiteHttpClient(seyrenConfig(clientDriver.getBaseUrl()));
String response = "[{\"target\": \"service.error.1MinuteRate\", \"datapoints\": [[0.20, 1337453460],[0.01, 1337453463]]}]";
clientDriver.addExpectation(
onRequestTo("/render/")
.withParam("from", "-11minutes")
.withParam("until", "-1minutes")
.withParam("uniq", Pattern.compile("[0-9]+"))
.withParam("format", "json")
.withParam("target", "service.error.1MinuteRate")
.withHeader("Authorization", "Basic c2V5cmVuOnMzeXIzTg=="),
giveResponse(response, "application/json"));
graphiteHttpClient.getTargetJson("service.error.1MinuteRate");
System.clearProperty("GRAPHITE_USERNAME");
System.clearProperty("GRAPHITE_PASSWORD");
}
@Test
public void gettingChartFromGraphiteIsHandledWhenThresholdsAreNotProvided() throws Exception {
byte[] bytes = new byte[] { 12, 12, 24, 34 };
InputStream response = new ByteArrayInputStream(bytes);
clientDriver.addExpectation(
onRequestTo("/render/")
.withParam("target", "hello.world")
.withParam("from", "-1hours")
.withParam("width", 300)
.withParam("height", 200)
.withParam("uniq", Pattern.compile("[0-9]+"))
.withParam("hideLegend", false)
.withParam("hideAxes", false),
giveResponseAsBytes(response, "image/png"));
byte[] actualBytes = graphiteHttpClient.getChart("hello.world", 300, 200, "-1hours", null, LegendState.SHOW, AxesState.SHOW);
assertThat(actualBytes, is(bytes));
}
@Test
public void legendCanBeHiddenWhenGettingChartFromGraphite() throws Exception {
byte[] bytes = new byte[] { 12, 12, 24, 34 };
InputStream response = new ByteArrayInputStream(bytes);
clientDriver.addExpectation(
onRequestTo("/render/")
.withParam("target", "hello.world")
.withParam("from", "-1hours")
.withParam("width", 300)
.withParam("height", 200)
.withParam("uniq", Pattern.compile("[0-9]+"))
.withParam("hideLegend", true)
.withParam("hideAxes", false),
giveResponseAsBytes(response, "image/png"));
byte[] actualBytes = graphiteHttpClient.getChart("hello.world", 300, 200, "-1hours", null, LegendState.HIDE, AxesState.SHOW);
assertThat(actualBytes, is(bytes));
}
@Test
public void axesCanBeHiddenWhenGettingChartFromGraphite() throws Exception {
byte[] bytes = new byte[] { 12, 12, 24, 34 };
InputStream response = new ByteArrayInputStream(bytes);
clientDriver.addExpectation(
onRequestTo("/render/")
.withParam("target", "hello.world")
.withParam("from", "-90minutes")
.withParam("width", 300)
.withParam("height", 200)
.withParam("uniq", Pattern.compile("[0-9]+"))
.withParam("hideLegend", false)
.withParam("hideAxes", true),
giveResponseAsBytes(response, "image/png"));
byte[] actualBytes = graphiteHttpClient.getChart("hello.world", 300, 200, "-90minutes", null, LegendState.SHOW, AxesState.HIDE);
assertThat(actualBytes, is(bytes));
}
@Test
public void gettingChartFromGraphiteIsHandledWhenWarnThresholdIsProvided() throws Exception {
byte[] bytes = new byte[] { 12, 12, 24, 34 };
InputStream response = new ByteArrayInputStream(bytes);
clientDriver.addExpectation(
onRequestTo("/render/")
.withParam("target", "hello.world")
.withParam("from", "-1hours")
.withParam("width", 300)
.withParam("height", 200)
.withParam("uniq", Pattern.compile("[0-9]+"))
.withParam("hideLegend", false)
.withParam("hideAxes", false)
.withParam("target", "alias(dashed(color(constantLine(3.2),\"yellow\")),\"warn level\")"),
giveResponseAsBytes(response, "image/png"));
byte[] actualBytes = graphiteHttpClient.getChart("hello.world", 300, 200, "-1hours", null, LegendState.SHOW, AxesState.SHOW, new BigDecimal("3.2"), null);
assertThat(actualBytes, is(bytes));
}
@Test
public void gettingChartFromGraphiteIsHandledWhenErrorThresholdIsProvided() throws Exception {
byte[] bytes = new byte[] { 12, 12, 24, 34 };
InputStream response = new ByteArrayInputStream(bytes);
clientDriver.addExpectation(
onRequestTo("/render/")
.withParam("target", "hello.world")
.withParam("from", "-1hours")
.withParam("width", 300)
.withParam("height", 200)
.withParam("uniq", Pattern.compile("[0-9]+"))
.withParam("hideLegend", false)
.withParam("hideAxes", false)
.withParam("target", "alias(dashed(color(constantLine(5.6),\"red\")),\"error level\")"),
giveResponseAsBytes(response, "image/png"));
byte[] actualBytes = graphiteHttpClient.getChart("hello.world", 300, 200, "-1hours", null, LegendState.SHOW, AxesState.SHOW, null, new BigDecimal("5.6"));
assertThat(actualBytes, is(bytes));
}
@Test
public void gettingChartFromGraphiteIsHandledWhenBothThresholdsAreProvided() throws Exception {
byte[] bytes = new byte[] { 12, 12, 24, 34 };
InputStream response = new ByteArrayInputStream(bytes);
clientDriver.addExpectation(
onRequestTo("/render/")
.withParam("target", "hello.world")
.withParam("from", "-1hours")
.withParam("width", 300)
.withParam("height", 200)
.withParam("uniq", Pattern.compile("[0-9]+"))
.withParam("hideLegend", false)
.withParam("hideAxes", false)
.withParam("target", "alias(dashed(color(constantLine(3.2),\"yellow\")),\"warn level\")")
.withParam("target", "alias(dashed(color(constantLine(5.6),\"red\")),\"error level\")"),
giveResponseAsBytes(response, "image/png"));
byte[] actualBytes = graphiteHttpClient.getChart("hello.world", 300, 200, "-1hours", null, LegendState.SHOW, AxesState.SHOW, new BigDecimal("3.2"), new BigDecimal("5.6"));
assertThat(actualBytes, is(bytes));
}
@Test
public void authIsUsedGettingChartFromGraphite() throws Exception {
System.setProperty("GRAPHITE_USERNAME", "seyren");
System.setProperty("GRAPHITE_PASSWORD", "s3yr3N");
graphiteHttpClient = new GraphiteHttpClient(seyrenConfig(clientDriver.getBaseUrl()));
byte[] bytes = new byte[] { 12, 12, 24, 34 };
InputStream response = new ByteArrayInputStream(bytes);
clientDriver.addExpectation(
onRequestTo("/render/")
.withParam("target", "hello.world")
.withParam("from", "-1hours")
.withParam("width", 300)
.withParam("height", 200)
.withParam("uniq", Pattern.compile("[0-9]+"))
.withParam("hideLegend", false)
.withParam("hideAxes", false)
.withHeader("Authorization", "Basic c2V5cmVuOnMzeXIzTg=="),
giveResponseAsBytes(response, "image/png"));
byte[] actualBytes = graphiteHttpClient.getChart("hello.world", 300, 200, "-1hours", null, LegendState.SHOW, AxesState.SHOW);
assertThat(actualBytes, is(bytes));
System.clearProperty("GRAPHITE_USERNAME");
System.clearProperty("GRAPHITE_PASSWORD");
}
private SeyrenConfig seyrenConfig(String graphiteUrl) {
System.setProperty("GRAPHITE_URL", graphiteUrl);
return new SeyrenConfig();
}
}