| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.hadoop.hbase.hbtop; |
| |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.Objects; |
| import org.apache.hadoop.hbase.hbtop.field.Field; |
| import org.apache.hadoop.hbase.hbtop.field.FieldValue; |
| import org.apache.yetus.audience.InterfaceAudience; |
| |
| |
| /** |
| * Represents a filter that's filtering the metric {@link Record}s. |
| */ |
| @InterfaceAudience.Private |
| public final class RecordFilter { |
| |
| private enum Operator { |
| EQUAL("="), |
| DOUBLE_EQUALS("=="), |
| GREATER(">"), |
| GREATER_OR_EQUAL(">="), |
| LESS("<"), |
| LESS_OR_EQUAL("<="); |
| |
| private final String operator; |
| |
| Operator(String operator) { |
| this.operator = operator; |
| } |
| |
| @Override |
| public String toString() { |
| return operator; |
| } |
| } |
| |
| public static RecordFilter parse(String filterString, boolean ignoreCase) { |
| return parse(filterString, Arrays.asList(Field.values()), ignoreCase); |
| } |
| |
| /* |
| * Parse a filter string and build a RecordFilter instance. |
| */ |
| public static RecordFilter parse(String filterString, List<Field> fields, boolean ignoreCase) { |
| int index = 0; |
| |
| boolean not = isNot(filterString); |
| if (not) { |
| index += 1; |
| } |
| |
| StringBuilder fieldString = new StringBuilder(); |
| while (filterString.length() > index && filterString.charAt(index) != '<' |
| && filterString.charAt(index) != '>' && filterString.charAt(index) != '=') { |
| fieldString.append(filterString.charAt(index++)); |
| } |
| |
| if (fieldString.length() == 0 || filterString.length() == index) { |
| return null; |
| } |
| |
| Field field = getField(fields, fieldString.toString()); |
| if (field == null) { |
| return null; |
| } |
| |
| StringBuilder operatorString = new StringBuilder(); |
| while (filterString.length() > index && (filterString.charAt(index) == '<' || |
| filterString.charAt(index) == '>' || filterString.charAt(index) == '=')) { |
| operatorString.append(filterString.charAt(index++)); |
| } |
| |
| Operator operator = getOperator(operatorString.toString()); |
| if (operator == null) { |
| return null; |
| } |
| |
| String value = filterString.substring(index); |
| FieldValue fieldValue = getFieldValue(field, value); |
| if (fieldValue == null) { |
| return null; |
| } |
| |
| return new RecordFilter(ignoreCase, not, field, operator, fieldValue); |
| } |
| |
| private static FieldValue getFieldValue(Field field, String value) { |
| try { |
| return field.newValue(value); |
| } catch (Exception e) { |
| return null; |
| } |
| } |
| |
| private static boolean isNot(String filterString) { |
| return filterString.startsWith("!"); |
| } |
| |
| private static Field getField(List<Field> fields, String fieldString) { |
| for (Field f : fields) { |
| if (f.getHeader().equals(fieldString)) { |
| return f; |
| } |
| } |
| return null; |
| } |
| |
| private static Operator getOperator(String operatorString) { |
| for (Operator o : Operator.values()) { |
| if (operatorString.equals(o.toString())) { |
| return o; |
| } |
| } |
| return null; |
| } |
| |
| private final boolean ignoreCase; |
| private final boolean not; |
| private final Field field; |
| private final Operator operator; |
| private final FieldValue value; |
| |
| private RecordFilter(boolean ignoreCase, boolean not, Field field, Operator operator, |
| FieldValue value) { |
| this.ignoreCase = ignoreCase; |
| this.not = not; |
| this.field = Objects.requireNonNull(field); |
| this.operator = Objects.requireNonNull(operator); |
| this.value = Objects.requireNonNull(value); |
| } |
| |
| public Field getField() { |
| return field; |
| } |
| |
| public boolean execute(Record record) { |
| FieldValue fieldValue = record.get(field); |
| if (fieldValue == null) { |
| return false; |
| } |
| |
| if (operator == Operator.EQUAL) { |
| boolean ret; |
| if (ignoreCase) { |
| ret = fieldValue.asString().toLowerCase().contains(value.asString().toLowerCase()); |
| } else { |
| ret = fieldValue.asString().contains(value.asString()); |
| } |
| return not != ret; |
| } |
| |
| int compare = ignoreCase ? |
| fieldValue.compareToIgnoreCase(value) : fieldValue.compareTo(value); |
| |
| boolean ret; |
| switch (operator) { |
| case DOUBLE_EQUALS: |
| ret = compare == 0; |
| break; |
| |
| case GREATER: |
| ret = compare > 0; |
| break; |
| |
| case GREATER_OR_EQUAL: |
| ret = compare >= 0; |
| break; |
| |
| case LESS: |
| ret = compare < 0; |
| break; |
| |
| case LESS_OR_EQUAL: |
| ret = compare <= 0; |
| break; |
| |
| default: |
| throw new AssertionError(); |
| } |
| return not != ret; |
| } |
| |
| @Override |
| public String toString() { |
| return (not ? "!" : "") + field.getHeader() + operator + value.asString(); |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) { |
| return true; |
| } |
| if (!(o instanceof RecordFilter)) { |
| return false; |
| } |
| RecordFilter filter = (RecordFilter) o; |
| return ignoreCase == filter.ignoreCase && not == filter.not && field == filter.field |
| && operator == filter.operator && value.equals(filter.value); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(ignoreCase, not, field, operator, value); |
| } |
| |
| /* |
| * For FilterBuilder |
| */ |
| public static FilterBuilder newBuilder(Field field) { |
| return new FilterBuilder(field, false); |
| } |
| |
| public static FilterBuilder newBuilder(Field field, boolean ignoreCase) { |
| return new FilterBuilder(field, ignoreCase); |
| } |
| |
| public static final class FilterBuilder { |
| private final Field field; |
| private final boolean ignoreCase; |
| |
| private FilterBuilder(Field field, boolean ignoreCase) { |
| this.field = Objects.requireNonNull(field); |
| this.ignoreCase = ignoreCase; |
| } |
| |
| public RecordFilter equal(FieldValue value) { |
| return newFilter(false, Operator.EQUAL, value); |
| } |
| |
| public RecordFilter equal(Object value) { |
| return equal(field.newValue(value)); |
| } |
| |
| public RecordFilter notEqual(FieldValue value) { |
| return newFilter(true, Operator.EQUAL, value); |
| } |
| |
| public RecordFilter notEqual(Object value) { |
| return notEqual(field.newValue(value)); |
| } |
| |
| public RecordFilter doubleEquals(FieldValue value) { |
| return newFilter(false, Operator.DOUBLE_EQUALS, value); |
| } |
| |
| public RecordFilter doubleEquals(Object value) { |
| return doubleEquals(field.newValue(value)); |
| } |
| |
| public RecordFilter notDoubleEquals(FieldValue value) { |
| return newFilter(true, Operator.DOUBLE_EQUALS, value); |
| } |
| |
| public RecordFilter notDoubleEquals(Object value) { |
| return notDoubleEquals(field.newValue(value)); |
| } |
| |
| public RecordFilter greater(FieldValue value) { |
| return newFilter(false, Operator.GREATER, value); |
| } |
| |
| public RecordFilter greater(Object value) { |
| return greater(field.newValue(value)); |
| } |
| |
| public RecordFilter notGreater(FieldValue value) { |
| return newFilter(true, Operator.GREATER, value); |
| } |
| |
| public RecordFilter notGreater(Object value) { |
| return notGreater(field.newValue(value)); |
| } |
| |
| public RecordFilter greaterOrEqual(FieldValue value) { |
| return newFilter(false, Operator.GREATER_OR_EQUAL, value); |
| } |
| |
| public RecordFilter greaterOrEqual(Object value) { |
| return greaterOrEqual(field.newValue(value)); |
| } |
| |
| public RecordFilter notGreaterOrEqual(FieldValue value) { |
| return newFilter(true, Operator.GREATER_OR_EQUAL, value); |
| } |
| |
| public RecordFilter notGreaterOrEqual(Object value) { |
| return notGreaterOrEqual(field.newValue(value)); |
| } |
| |
| public RecordFilter less(FieldValue value) { |
| return newFilter(false, Operator.LESS, value); |
| } |
| |
| public RecordFilter less(Object value) { |
| return less(field.newValue(value)); |
| } |
| |
| public RecordFilter notLess(FieldValue value) { |
| return newFilter(true, Operator.LESS, value); |
| } |
| |
| public RecordFilter notLess(Object value) { |
| return notLess(field.newValue(value)); |
| } |
| |
| public RecordFilter lessOrEqual(FieldValue value) { |
| return newFilter(false, Operator.LESS_OR_EQUAL, value); |
| } |
| |
| public RecordFilter lessOrEqual(Object value) { |
| return lessOrEqual(field.newValue(value)); |
| } |
| |
| public RecordFilter notLessOrEqual(FieldValue value) { |
| return newFilter(true, Operator.LESS_OR_EQUAL, value); |
| } |
| |
| public RecordFilter notLessOrEqual(Object value) { |
| return notLessOrEqual(field.newValue(value)); |
| } |
| |
| private RecordFilter newFilter(boolean not, Operator operator, FieldValue value) { |
| return new RecordFilter(ignoreCase, not, field, operator, value); |
| } |
| } |
| } |