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/*
* Copyright 2015 Open Networking Laboratory
*
* 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 org.onosproject.ui.impl;
import com.fasterxml.jackson.databind.node.ObjectNode;
import com.google.common.base.Strings;
import com.google.common.collect.ImmutableSet;
import org.onosproject.net.DeviceId;
import org.onosproject.net.flow.FlowEntry;
import org.onosproject.net.flow.FlowRuleService;
import org.onosproject.net.flow.criteria.Criterion;
import org.onosproject.net.flow.instructions.Instruction;
import org.onosproject.ui.RequestHandler;
import org.onosproject.ui.UiMessageHandler;
import org.onosproject.ui.table.CellFormatter;
import org.onosproject.ui.table.TableModel;
import org.onosproject.ui.table.TableRequestHandler;
import org.onosproject.ui.table.cell.EnumFormatter;
import java.util.Collection;
import java.util.List;
import java.util.Set;
/**
* Message handler for flow view related messages.
*/
public class FlowViewMessageHandler extends UiMessageHandler {
private static final String FLOW_DATA_REQ = "flowDataRequest";
private static final String FLOW_DATA_RESP = "flowDataResponse";
private static final String FLOWS = "flows";
private static final String ID = "id";
private static final String APP_ID = "appId";
private static final String GROUP_ID = "groupId";
private static final String TABLE_ID = "tableId";
private static final String PRIORITY = "priority";
private static final String SELECTOR = "selector";
private static final String TREATMENT = "treatment";
private static final String TIMEOUT = "timeout";
private static final String PERMANENT = "permanent";
private static final String STATE = "state";
private static final String PACKETS = "packets";
private static final String BYTES = "bytes";
private static final String COMMA = ", ";
private static final String[] COL_IDS = {
ID, APP_ID, GROUP_ID, TABLE_ID, PRIORITY, SELECTOR,
TREATMENT, TIMEOUT, PERMANENT, STATE, PACKETS, BYTES
};
@Override
protected Collection<RequestHandler> createRequestHandlers() {
return ImmutableSet.of(new FlowDataRequest());
}
// handler for flow table requests
private final class FlowDataRequest extends TableRequestHandler {
private FlowDataRequest() {
super(FLOW_DATA_REQ, FLOW_DATA_RESP, FLOWS);
}
@Override
protected String[] getColumnIds() {
return COL_IDS;
}
@Override
protected TableModel createTableModel() {
TableModel tm = super.createTableModel();
tm.setFormatter(SELECTOR, new SelectorFormatter());
tm.setFormatter(TREATMENT, new TreatmentFormatter());
tm.setFormatter(STATE, EnumFormatter.INSTANCE);
return tm;
}
@Override
protected void populateTable(TableModel tm, ObjectNode payload) {
String uri = string(payload, "devId");
if (!Strings.isNullOrEmpty(uri)) {
DeviceId deviceId = DeviceId.deviceId(uri);
FlowRuleService frs = get(FlowRuleService.class);
for (FlowEntry flow : frs.getFlowEntries(deviceId)) {
populateRow(tm.addRow(), flow);
}
}
}
private void populateRow(TableModel.Row row, FlowEntry flow) {
row.cell(ID, flow.id().value())
.cell(APP_ID, flow.appId())
.cell(GROUP_ID, flow.groupId().id())
.cell(TABLE_ID, flow.tableId())
.cell(PRIORITY, flow.priority())
.cell(SELECTOR, flow)
.cell(TREATMENT, flow)
.cell(TIMEOUT, flow.timeout())
.cell(PERMANENT, flow.isPermanent())
.cell(STATE, flow.state())
.cell(PACKETS, flow.packets())
.cell(BYTES, flow.bytes());
}
private final class SelectorFormatter implements CellFormatter {
@Override
public String format(Object value) {
FlowEntry flow = (FlowEntry) value;
Set<Criterion> criteria = flow.selector().criteria();
if (criteria.isEmpty()) {
return "(No traffic selector criteria for this flow)";
}
StringBuilder sb = new StringBuilder("Criteria: ");
for (Criterion c : criteria) {
sb.append(c).append(COMMA);
}
removeTrailingComma(sb);
return sb.toString();
}
}
private final class TreatmentFormatter implements CellFormatter {
@Override
public String format(Object value) {
FlowEntry flow = (FlowEntry) value;
List<Instruction> instructions = flow.treatment().allInstructions();
if (instructions.isEmpty()) {
return "(No traffic treatment instructions for this flow)";
}
StringBuilder sb = new StringBuilder("Treatment Instructions: ");
for (Instruction i : instructions) {
sb.append(i).append(COMMA);
}
removeTrailingComma(sb);
return sb.toString();
}
}
private StringBuilder removeTrailingComma(StringBuilder sb) {
int pos = sb.lastIndexOf(COMMA);
sb.delete(pos, sb.length());
return sb;
}
}
}
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