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/*******************************************************************************
* Copyright 2016 ContainX and OpenStack4j
*
* Licensed 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 com.huawei.openstack4j.model.telemetry;
import com.google.common.collect.Lists;
import com.huawei.openstack4j.openstack.internal.Parser;
import java.util.Date;
import java.util.List;
import static com.google.common.base.Preconditions.checkNotNull;
/**
* Query options used in retrieving Events
*
* @author Jeremy Unruh
* @author Miroslav Lacina
*/
public class EventCriteria {
public enum Oper {
/** Less Than : < */
LT("lt"),
/** Greater Than : > */
GT("gt"),
/** Less Than Equals : <= */
LTE("le"),
/** Greater Than Equals : >= */
GTE("ge"),
/** Equals : = */
EQUALS("eq")
;
private final String queryValue;
Oper(String queryValue) {
this.queryValue = queryValue;
}
public String getQueryValue() {
return queryValue;
}
}
private List params = Lists.newArrayList();
public static EventCriteria create() {
return new EventCriteria();
}
/**
* Matches the given event type
* @param eventType the resource id
* @return EventCriteria
*/
public EventCriteria eventType(String eventType) {
checkNotNull(eventType, "eventType must not be null");
return add("event_type", Oper.EQUALS, eventType);
}
/**
* Matches the given message identifier
* @param messageId the message id
* @return EventCriteria
*/
public EventCriteria messageId(String messageId) {
checkNotNull(messageId, "messageId must not be null");
return add("message_id", Oper.EQUALS, messageId);
}
/**
* Adds the start timestamp event criteria
* @param operator the operator
* @param value the date for this timestamp
* @return EventCriteria
*/
public EventCriteria startTimestamp(Oper operator, Date value) {
checkNotNull(value, "Date must not be null");
return add("start_timestamp", operator, Parser.toISO8601DateFormat(value));
}
/**
* Adds the end timestamp event criteria
* @param operator the operator
* @param value the date for this timestamp
* @return EventCriteria
*/
public EventCriteria endTimestamp(Oper operator, Date value) {
checkNotNull(value, "Date must not be null");
return add("end_timestamp", operator, Parser.toISO8601DateFormat(value));
}
/**
* Adds an adhoc field criteria
* @param field the field name (will be treated as trait name and applied on trait)
* @param operator the operator
* @param value the value
* @return EventCriteria
*/
public EventCriteria add(String field, Oper operator, Number value) {
checkNotNull(value, "Value must not be null");
return add(field, operator, value.toString());
}
/**
* Adds an adhoc field criteria
* @param field the field name (will be treated as trait name and applied on trait)
* @param operator the operator
* @param value the value
* @return EventCriteria
*/
public EventCriteria add(String field, Oper operator, String value) {
checkNotNull(field, "Field must not be null");
checkNotNull(operator, "Operator must not be null");
checkNotNull(value, "Value must not be null");
params.add(new NameOpValue(field, operator, value));
return this;
}
/**
* @return the criteria parameters for this query
*/
public List getCriteriaParams() {
return params;
}
public static class NameOpValue {
private final String field;
private final Oper operator;
private String value;
NameOpValue(String field, Oper operator, Comparable value) {
this.field = field;
this.operator = operator;
if (value instanceof Date)
this.value = Parser.toISO8601DateFormat(Date.class.cast(value));
else
this.value = String.valueOf(value);
}
public String getField() {
return field;
}
public Oper getOperator() {
return operator;
}
public String getValue() {
return value;
}
}
}
