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feat(api): remote readonly events access (#80)
* add event types fetching context Signed-off-by: Andrew Azores <aazores@redhat.com> * implement event templates query * JDK11 compat fixup * add 'deflate' response body filter Signed-off-by: Andrew Azores <aazores@redhat.com> * refactor cleanup * fixup! refactor cleanup Signed-off-by: Andrew Azores <aazores@redhat.com> --------- Signed-off-by: Andrew Azores <aazores@redhat.com>
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99 changes: 99 additions & 0 deletions
99
src/main/java/io/cryostat/agent/remote/EventTemplatesContext.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,99 @@ | ||
| /* | ||
| * Copyright The Cryostat Authors | ||
| * | ||
| * The Universal Permissive License (UPL), Version 1.0 | ||
| * | ||
| * Subject to the condition set forth below, permission is hereby granted to any | ||
| * person obtaining a copy of this software, associated documentation and/or data | ||
| * (collectively the "Software"), free of charge and under any and all copyright | ||
| * rights in the Software, and any and all patent rights owned or freely | ||
| * licensable by each licensor hereunder covering either (i) the unmodified | ||
| * Software as contributed to or provided by such licensor, or (ii) the Larger | ||
| * Works (as defined below), to deal in both | ||
| * | ||
| * (a) the Software, and | ||
| * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if | ||
| * one is included with the Software (each a "Larger Work" to which the Software | ||
| * is contributed by such licensors), | ||
| * | ||
| * without restriction, including without limitation the rights to copy, create | ||
| * derivative works of, display, perform, and distribute the Software and make, | ||
| * use, sell, offer for sale, import, export, have made, and have sold the | ||
| * Software and the Larger Work(s), and to sublicense the foregoing rights on | ||
| * either these or other terms. | ||
| * | ||
| * This license is subject to the following condition: | ||
| * The above copyright notice and either this complete permission notice or at | ||
| * a minimum a reference to the UPL must 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. | ||
| */ | ||
| package io.cryostat.agent.remote; | ||
|
|
||
| import java.io.IOException; | ||
| import java.io.OutputStream; | ||
| import java.lang.management.ManagementFactory; | ||
| import java.util.List; | ||
| import java.util.stream.Collectors; | ||
|
|
||
| import javax.inject.Inject; | ||
|
|
||
| import com.fasterxml.jackson.databind.ObjectMapper; | ||
| import com.sun.net.httpserver.HttpExchange; | ||
| import jdk.management.jfr.ConfigurationInfo; | ||
| import jdk.management.jfr.FlightRecorderMXBean; | ||
| import org.apache.http.HttpStatus; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
|
||
| class EventTemplatesContext implements RemoteContext { | ||
|
|
||
| private final Logger log = LoggerFactory.getLogger(getClass()); | ||
| private final ObjectMapper mapper; | ||
|
|
||
| @Inject | ||
| EventTemplatesContext(ObjectMapper mapper) { | ||
| this.mapper = mapper; | ||
| } | ||
|
|
||
| @Override | ||
| public String path() { | ||
| return "/event-templates"; | ||
| } | ||
|
|
||
| @Override | ||
| public void handle(HttpExchange exchange) throws IOException { | ||
| String mtd = exchange.getRequestMethod(); | ||
| switch (mtd) { | ||
| case "GET": | ||
| try { | ||
| exchange.sendResponseHeaders(HttpStatus.SC_OK, 0); | ||
| try (OutputStream response = exchange.getResponseBody()) { | ||
| FlightRecorderMXBean bean = | ||
| ManagementFactory.getPlatformMXBean(FlightRecorderMXBean.class); | ||
| List<String> xmlTexts = | ||
| bean.getConfigurations().stream() | ||
| .map(ConfigurationInfo::getContents) | ||
| .collect(Collectors.toList()); | ||
| mapper.writeValue(response, xmlTexts); | ||
| } | ||
| } catch (Exception e) { | ||
| log.error("events serialization failure", e); | ||
| } finally { | ||
| exchange.close(); | ||
| } | ||
| break; | ||
| default: | ||
| exchange.sendResponseHeaders(HttpStatus.SC_NOT_FOUND, -1); | ||
| exchange.close(); | ||
| break; | ||
| } | ||
| } | ||
| } |
139 changes: 139 additions & 0 deletions
139
src/main/java/io/cryostat/agent/remote/EventTypesContext.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,139 @@ | ||
| /* | ||
| * Copyright The Cryostat Authors | ||
| * | ||
| * The Universal Permissive License (UPL), Version 1.0 | ||
| * | ||
| * Subject to the condition set forth below, permission is hereby granted to any | ||
| * person obtaining a copy of this software, associated documentation and/or data | ||
| * (collectively the "Software"), free of charge and under any and all copyright | ||
| * rights in the Software, and any and all patent rights owned or freely | ||
| * licensable by each licensor hereunder covering either (i) the unmodified | ||
| * Software as contributed to or provided by such licensor, or (ii) the Larger | ||
| * Works (as defined below), to deal in both | ||
| * | ||
| * (a) the Software, and | ||
| * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if | ||
| * one is included with the Software (each a "Larger Work" to which the Software | ||
| * is contributed by such licensors), | ||
| * | ||
| * without restriction, including without limitation the rights to copy, create | ||
| * derivative works of, display, perform, and distribute the Software and make, | ||
| * use, sell, offer for sale, import, export, have made, and have sold the | ||
| * Software and the Larger Work(s), and to sublicense the foregoing rights on | ||
| * either these or other terms. | ||
| * | ||
| * This license is subject to the following condition: | ||
| * The above copyright notice and either this complete permission notice or at | ||
| * a minimum a reference to the UPL must 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. | ||
| */ | ||
| package io.cryostat.agent.remote; | ||
|
|
||
| import java.io.IOException; | ||
| import java.io.OutputStream; | ||
| import java.util.ArrayList; | ||
| import java.util.List; | ||
| import java.util.stream.Collectors; | ||
|
|
||
| import javax.inject.Inject; | ||
|
|
||
| import com.fasterxml.jackson.databind.ObjectMapper; | ||
| import com.sun.net.httpserver.HttpExchange; | ||
| import edu.umd.cs.findbugs.annotations.SuppressFBWarnings; | ||
| import jdk.jfr.EventType; | ||
| import jdk.jfr.FlightRecorder; | ||
| import jdk.jfr.SettingDescriptor; | ||
| import org.apache.http.HttpStatus; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
|
||
| class EventTypesContext implements RemoteContext { | ||
|
|
||
| private final Logger log = LoggerFactory.getLogger(getClass()); | ||
| private final ObjectMapper mapper; | ||
|
|
||
| @Inject | ||
| EventTypesContext(ObjectMapper mapper) { | ||
| this.mapper = mapper; | ||
| } | ||
|
|
||
| @Override | ||
| public String path() { | ||
| return "/event-types"; | ||
| } | ||
|
|
||
| @Override | ||
| public void handle(HttpExchange exchange) throws IOException { | ||
| String mtd = exchange.getRequestMethod(); | ||
| switch (mtd) { | ||
| case "GET": | ||
| try { | ||
| List<EventInfo> events = getEventTypes(); | ||
| exchange.sendResponseHeaders(HttpStatus.SC_OK, 0); | ||
| try (OutputStream response = exchange.getResponseBody()) { | ||
| mapper.writeValue(response, events); | ||
| } | ||
| } catch (Exception e) { | ||
| log.error("events serialization failure", e); | ||
| } finally { | ||
| exchange.close(); | ||
| } | ||
| break; | ||
| default: | ||
| exchange.sendResponseHeaders(HttpStatus.SC_NOT_FOUND, -1); | ||
| exchange.close(); | ||
| break; | ||
| } | ||
| } | ||
|
|
||
| private List<EventInfo> getEventTypes() { | ||
| return FlightRecorder.getFlightRecorder().getEventTypes().stream() | ||
| .map( | ||
| evt -> { | ||
| EventInfo evtInfo = new EventInfo(evt); | ||
| evtInfo.settings.addAll( | ||
| evt.getSettingDescriptors().stream() | ||
| .map(SettingInfo::new) | ||
| .collect(Collectors.toList())); | ||
| return evtInfo; | ||
| }) | ||
| .collect(Collectors.toList()); | ||
| } | ||
|
|
||
| @SuppressFBWarnings(value = "URF_UNREAD_FIELD") | ||
| private static class EventInfo { | ||
|
|
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| public final String name; | ||
| public final String label; | ||
| public final String description; | ||
| public final List<String> categories; | ||
| public final List<SettingInfo> settings = new ArrayList<>(); | ||
|
|
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| EventInfo(EventType evt) { | ||
| this.name = evt.getName(); | ||
| this.label = evt.getLabel(); | ||
| this.description = evt.getDescription(); | ||
| this.categories = evt.getCategoryNames(); | ||
| } | ||
| } | ||
|
|
||
| @SuppressFBWarnings(value = "URF_UNREAD_FIELD") | ||
| private static class SettingInfo { | ||
|
|
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| public final String name; | ||
| public final String defaultValue; | ||
|
|
||
| SettingInfo(SettingDescriptor desc) { | ||
| this.name = desc.getName(); | ||
| this.defaultValue = desc.getDefaultValue(); | ||
| } | ||
| } | ||
| } |
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