Package com.wavefront.agent.preprocessor

Class PreprocessorUtil

java.lang.Object

com.wavefront.agent.preprocessor.PreprocessorUtil

public abstract class PreprocessorUtil
extends Object

Utility class for methods used by preprocessors.

Author:

[email protected]

Field Summary

Fields

Modifier and Type	Field	Description
static String[]	LOGICAL_OPS
static String	V2_PREDICATE_KEY

Constructor Summary

Constructors

Constructor	Description
PreprocessorUtil()

Method Summary

Modifier and Type	Method	Description
static String	expandPlaceholders(String input, wavefront.report.ReportPoint reportPoint)	Substitute {{...}} placeholders with corresponding components of the point {{metricName}} {{sourceName}} are replaced with the metric name and source respectively {{anyTagK}} is replaced with the value of the anyTagK point tag
static String	expandPlaceholders(String input, wavefront.report.Span span)	Substitute {{...}} placeholders with corresponding components of a Span {{spanName}} {{sourceName}} are replaced with the span name and source respectively {{anyKey}} is replaced with the value of an annotation with anyKey key
static boolean	getBoolean(Map<String,Object> ruleMap, String key, boolean defaultValue)
static int	getInteger(Map<String,Object> ruleMap, String key, int defaultValue)
static Predicate	getPredicate(Map<String,Object> ruleMap, String key, Class<?> reportableEntity)
static String	getReportableEntityComparableValue(String scope, wavefront.report.ReportPoint point)
static List<String>	getReportableEntityComparableValue(String scope, wavefront.report.Span span)
static String	getString(Map<String,Object> ruleMap, String key)
static Predicate	parsePredicate(Map<String,Object> v2Predicate, Class<?> reportableEntity)	Parses the entire v2 Predicate tree into a Predicate.
static Predicate	processLogicalOp(Map<String,Object> element, Class<?> reportableEntity)
static String	truncate(String input, int maxLength, LengthLimitActionType actionSubtype)	Enforce string max length limit - either truncate or truncate with "..." at the end.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

LOGICAL_OPS

public static final String[] LOGICAL_OPS

V2_PREDICATE_KEY

public static final String V2_PREDICATE_KEY

See Also:

Constant Field Values

Constructor Detail

PreprocessorUtil

public PreprocessorUtil()

Method Detail

expandPlaceholders

public static String expandPlaceholders(String input,
                                        @Nonnull
                                        wavefront.report.ReportPoint reportPoint)

Substitute {{...}} placeholders with corresponding components of the point {{metricName}} {{sourceName}} are replaced with the metric name and source respectively {{anyTagK}} is replaced with the value of the anyTagK point tag

Parameters:

input - input string with {{...}} placeholders

reportPoint - ReportPoint object to extract components from

Returns:

string with substituted placeholders

expandPlaceholders

public static String expandPlaceholders(String input,
                                        @Nonnull
                                        wavefront.report.Span span)

Substitute {{...}} placeholders with corresponding components of a Span {{spanName}} {{sourceName}} are replaced with the span name and source respectively {{anyKey}} is replaced with the value of an annotation with anyKey key

Parameters:

input - input string with {{...}} placeholders

span - Span object to extract components from

Returns:

string with substituted placeholders

truncate

public static String truncate(String input,
                              int maxLength,
                              LengthLimitActionType actionSubtype)

Enforce string max length limit - either truncate or truncate with "..." at the end.

Parameters:

input - Input string to truncate.

maxLength - Truncate string at this length.

actionSubtype - TRUNCATE or TRUNCATE_WITH_ELLIPSIS.

Returns:

truncated string

getString

@Nullable
public static String getString(Map<String,Object> ruleMap,
                               String key)

getBoolean

public static boolean getBoolean(Map<String,Object> ruleMap,
                                 String key,
                                 boolean defaultValue)

getInteger

public static int getInteger(Map<String,Object> ruleMap,
                             String key,
                             int defaultValue)

getPredicate

@Nullable
public static Predicate getPredicate(Map<String,Object> ruleMap,
                                     String key,
                                     Class<?> reportableEntity)

parsePredicate

public static Predicate parsePredicate(Map<String,Object> v2Predicate,
                                       Class<?> reportableEntity)

Parses the entire v2 Predicate tree into a Predicate.

Parameters:

v2Predicate - the predicate tree

reportableEntity -

Returns:

Predicate

processLogicalOp

public static Predicate processLogicalOp(Map<String,Object> element,
                                         Class<?> reportableEntity)

getReportableEntityComparableValue

public static String getReportableEntityComparableValue(String scope,
                                                        wavefront.report.ReportPoint point)

getReportableEntityComparableValue

public static List<String> getReportableEntityComparableValue(String scope,
                                                              wavefront.report.Span span)