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#1806 provide configuration for operator defined custom metrics
* add new as singleton started Actor OperatorMetricsProviderActor responsible for gathering the metrics and reporting via DittoMetrics gauges * provide configuration options for scrape-interval, namespaces to count and and RQL filter to apply, including optional tags to add to gauges * provide example in configuration Signed-off-by: Thomas Jäckle <thomas.jaeckle@beyonnex.io>
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...src/main/java/org/eclipse/ditto/thingsearch/service/common/config/CustomMetricConfig.java
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| /* | ||
| * Copyright (c) 2023 Contributors to the Eclipse Foundation | ||
| * | ||
| * See the NOTICE file(s) distributed with this work for additional | ||
| * information regarding copyright ownership. | ||
| * | ||
| * This program and the accompanying materials are made available under the | ||
| * terms of the Eclipse Public License 2.0 which is available at | ||
| * http://www.eclipse.org/legal/epl-2.0 | ||
| * | ||
| * SPDX-License-Identifier: EPL-2.0 | ||
| */ | ||
| package org.eclipse.ditto.thingsearch.service.common.config; | ||
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| import java.time.Duration; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.Optional; | ||
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| import org.eclipse.ditto.internal.utils.config.KnownConfigValue; | ||
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| /** | ||
| * Provides the configuration settings for a single custom operator metric. | ||
| */ | ||
| public interface CustomMetricConfig { | ||
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| /** | ||
| * Returns whether this specific search operator metric gathering is turned on. | ||
| * | ||
| * @return true or false. | ||
| */ | ||
| boolean isEnabled(); | ||
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| /** | ||
| * Returns the optional scrape interval override for this specific custom metric, how often the metrics should be | ||
| * gathered. | ||
| * | ||
| * @return the optional scrape interval override. | ||
| */ | ||
| Optional<Duration> getScrapeInterval(); | ||
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| /** | ||
| * Returns the namespaces the custom metric should be executed in or an empty list for gathering metrics in all | ||
| * namespaces. | ||
| * | ||
| * @return a list of namespaces. | ||
| */ | ||
| List<String> getNamespaces(); | ||
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| /** | ||
| * Returns the filter (RQL statement) to include in the "CountThings" request or an empty string of no filter | ||
| * should be applied. | ||
| * | ||
| * @return the filter RQL statement. | ||
| */ | ||
| String getFilter(); | ||
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| /** | ||
| * Return optional tags to report to the custom Gauge metric. | ||
| * | ||
| * @return optional tags to report. | ||
| */ | ||
| Map<String, String> getTags(); | ||
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| enum CustomMetricConfigValue implements KnownConfigValue { | ||
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| /** | ||
| * Whether the metrics should be gathered. | ||
| */ | ||
| ENABLED("enabled", true), | ||
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| /** | ||
| * The optional custom scrape interval, how often the metrics should be gathered. | ||
| * If this is {@code Duration.ZERO}, then there is no overwrite for the "global" scrape-interval to be applied. | ||
| */ | ||
| SCRAPE_INTERVAL("scrape-interval", Duration.ZERO), | ||
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| /** | ||
| * The namespaces the custom metric should be executed in or an empty list for gathering metrics in all | ||
| * namespaces. | ||
| */ | ||
| NAMESPACES("namespaces", List.of()), | ||
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| /** | ||
| * The filter RQL statement. | ||
| */ | ||
| FILTER("filter", ""), | ||
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| /** | ||
| * The optional tags to report to the custom Gauge metric. | ||
| */ | ||
| TAGS("tags", Map.of()); | ||
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| private final String path; | ||
| private final Object defaultValue; | ||
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| CustomMetricConfigValue(final String thePath, final Object theDefaultValue) { | ||
| path = thePath; | ||
| defaultValue = theDefaultValue; | ||
| } | ||
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| @Override | ||
| public Object getDefaultValue() { | ||
| return defaultValue; | ||
| } | ||
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| @Override | ||
| public String getConfigPath() { | ||
| return path; | ||
| } | ||
| } | ||
| } |
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