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174 changes: 174 additions & 0 deletions
174
...re/src/main/java/io/smartcat/cassandra/diagnostics/module/hiccup/HiccupConfiguration.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,174 @@ | ||
| package io.smartcat.cassandra.diagnostics.module.hiccup; | ||
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| import java.util.Map; | ||
| import java.util.concurrent.TimeUnit; | ||
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| import org.yaml.snakeyaml.Yaml; | ||
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| import io.smartcat.cassandra.diagnostics.config.ConfigurationException; | ||
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| /** | ||
| * Hiccup module's configuration. | ||
| */ | ||
| public class HiccupConfiguration { | ||
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| /** | ||
| * A helper class for constructing immutable outer class. | ||
| */ | ||
| public static class Values { | ||
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| private static final double DEFAULT_RESOLUTION_IN_MS = 1.0; | ||
| private static final long DEFAULT_START_DELAY_IN_MS = 30000; | ||
| private static final boolean DEFAULT_ALLOCATE_OBJECTS = false; | ||
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| // default to ~20usec best-case resolution | ||
| private static final long DEFAULT_LOWEST_TRACKABLE_VALUE_IN_NANOS = 1000L * 20L; | ||
| private static final long DEFAULT_HIGHEST_TRACKABLE_VALUE_IN_NANOS = 3600 * 1000L * 1000L * 1000L; | ||
| private static final int DEFAULT_NUMBER_OF_SIGNIFICANT_VALUE_DIGITS = 2; | ||
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| private static final int DEFAULT_PERIOD = 5; | ||
| private static final String DEFAULT_TIMEUNIT = "SECONDS"; | ||
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| /** | ||
| * Sleep resolution in millis. | ||
| */ | ||
| public double resolutionInMs = DEFAULT_RESOLUTION_IN_MS; | ||
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| /** | ||
| * Initial start delay in millis. | ||
| */ | ||
| public long startDelayInMs = DEFAULT_START_DELAY_IN_MS; | ||
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| /** | ||
| * Allocate objects to measure object creation stalls. | ||
| */ | ||
| public boolean allocateObjects = DEFAULT_ALLOCATE_OBJECTS; | ||
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| /** | ||
| * Lowest trackable value. | ||
| */ | ||
| public long lowestTrackableValueInNanos = DEFAULT_LOWEST_TRACKABLE_VALUE_IN_NANOS; | ||
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| /** | ||
| * Highest trackable value. | ||
| */ | ||
| public long highestTrackableValueInNanos = DEFAULT_HIGHEST_TRACKABLE_VALUE_IN_NANOS; | ||
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| /** | ||
| * Number of significat value digits. | ||
| */ | ||
| public int numberOfSignificantValueDigits = DEFAULT_NUMBER_OF_SIGNIFICANT_VALUE_DIGITS; | ||
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| /** | ||
| * Hiccup reporting period. | ||
| */ | ||
| public int period = DEFAULT_PERIOD; | ||
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| /** | ||
| * Hiccup reporting period's time unit. | ||
| */ | ||
| public TimeUnit timeunit = TimeUnit.valueOf(DEFAULT_TIMEUNIT); | ||
| } | ||
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| private Values values = new Values(); | ||
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| private HiccupConfiguration() { | ||
| } | ||
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| /** | ||
| * Create typed configuration for hiccup module out of generic module configuration. | ||
| * | ||
| * @param options Module configuration options. | ||
| * @return typed hiccup module configuration from a generic one | ||
| * @throws ConfigurationException in case the provided options are not valid | ||
| */ | ||
| public static HiccupConfiguration create(Map<String, Object> options) throws ConfigurationException { | ||
| HiccupConfiguration conf = new HiccupConfiguration(); | ||
| Yaml yaml = new Yaml(); | ||
| String str = yaml.dumpAsMap(options); | ||
| conf.values = yaml.loadAs(str, HiccupConfiguration.Values.class); | ||
| return conf; | ||
| } | ||
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| /** | ||
| * Hiccup sleep resolution in millis. | ||
| * | ||
| * @return hiccup sleep resolution | ||
| */ | ||
| public double resolutionInMs() { | ||
| return values.resolutionInMs; | ||
| } | ||
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| /** | ||
| * Hiccup initial start delay in millis. | ||
| * | ||
| * @return hiccup initial start delay | ||
| */ | ||
| public long startDelayInMs() { | ||
| return values.startDelayInMs; | ||
| } | ||
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| /** | ||
| * Allocate objects to measure object creation stalls. | ||
| * | ||
| * @return allocate objects | ||
| */ | ||
| public boolean allocateObjects() { | ||
| return values.allocateObjects; | ||
| } | ||
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| /** | ||
| * Lowest trackable value. | ||
| * | ||
| * @return lowest trackable value | ||
| */ | ||
| public long lowestTrackableValueInNanos() { | ||
| return values.lowestTrackableValueInNanos; | ||
| } | ||
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| /** | ||
| * Highest trackable value. | ||
| * | ||
| * @return highest trackable value | ||
| */ | ||
| public long highestTrackableValueInNanos() { | ||
| return values.highestTrackableValueInNanos; | ||
| } | ||
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| /** | ||
| * Number of significat value digits. | ||
| * | ||
| * @return number of significat value digits | ||
| */ | ||
| public int numberOfSignificantValueDigits() { | ||
| return values.numberOfSignificantValueDigits; | ||
| } | ||
|
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| /** | ||
| * Hiccup reporting period getter. | ||
| * | ||
| * @return hiccup reporting period | ||
| */ | ||
| public int period() { | ||
| return values.period; | ||
| } | ||
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| /** | ||
| * Hiccup reporting period time unit getter. | ||
| * | ||
| * @return hiccup reporting time unit | ||
| */ | ||
| public TimeUnit timeunit() { | ||
| return values.timeunit; | ||
| } | ||
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| /** | ||
| * Hiccup reporting interval in milliseconds. | ||
| * | ||
| * @return reporting interval in milliseconds | ||
| */ | ||
| public long reportingIntervalInMillis() { | ||
| return timeunit().toMillis(period()); | ||
| } | ||
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| } |
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