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/*
* Copyright 2014-2015 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.cli.net;
import static com.google.common.collect.Lists.newArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.SortedMap;
import java.util.TreeMap;
import org.apache.karaf.shell.commands.Argument;
import org.apache.karaf.shell.commands.Command;
import org.onosproject.cli.AbstractShellCommand;
import org.onosproject.cli.Comparators;
import org.onosproject.core.ApplicationId;
import org.onosproject.core.CoreService;
import org.onosproject.net.Device;
import org.onosproject.net.DeviceId;
import org.onosproject.net.device.DeviceService;
import org.onosproject.net.flow.FlowEntry;
import org.onosproject.net.flow.FlowEntry.FlowEntryState;
import org.onosproject.net.flow.FlowRuleService;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ArrayNode;
import com.fasterxml.jackson.databind.node.ObjectNode;
/**
* Lists all currently-known flows.
*/
@Command(scope = "onos", name = "flows",
description = "Lists all currently-known flows.")
public class FlowsListCommand extends AbstractShellCommand {
public static final String ANY = "any";
private static final String FMT =
" id=%s, state=%s, bytes=%s, packets=%s, duration=%s, priority=%s, tableId=%s appId=%s, payLoad=%s";
private static final String TFMT = " treatment=%s";
private static final String SFMT = " selector=%s";
@Argument(index = 1, name = "uri", description = "Device ID",
required = false, multiValued = false)
String uri = null;
@Argument(index = 0, name = "state", description = "Flow Rule state",
required = false, multiValued = false)
String state = null;
@Override
protected void execute() {
CoreService coreService = get(CoreService.class);
DeviceService deviceService = get(DeviceService.class);
FlowRuleService service = get(FlowRuleService.class);
SortedMap<Device, List<FlowEntry>> flows = getSortedFlows(deviceService, service);
if (outputJson()) {
print("%s", json(flows.keySet(), flows));
} else {
flows.forEach((device, flow) -> printFlows(device, flow, coreService));
}
}
/**
* Produces a JSON array of flows grouped by the each device.
*
* @param devices collection of devices to group flow by
* @param flows collection of flows per each device
* @return JSON array
*/
private JsonNode json(Iterable<Device> devices,
Map<Device, List<FlowEntry>> flows) {
ObjectMapper mapper = new ObjectMapper();
ArrayNode result = mapper.createArrayNode();
for (Device device : devices) {
result.add(json(mapper, device, flows.get(device)));
}
return result;
}
// Produces JSON object with the flows of the given device.
private ObjectNode json(ObjectMapper mapper,
Device device, List<FlowEntry> flows) {
ObjectNode result = mapper.createObjectNode();
ArrayNode array = mapper.createArrayNode();
flows.forEach(flow -> array.add(jsonForEntity(flow, FlowEntry.class)));
result.put("device", device.id().toString())
.put("flowCount", flows.size())
.set("flows", array);
return result;
}
/**
* Returns the list of devices sorted using the device ID URIs.
*
* @param deviceService device service
* @param service flow rule service
* @return sorted device list
*/
protected SortedMap<Device, List<FlowEntry>> getSortedFlows(DeviceService deviceService,
FlowRuleService service) {
SortedMap<Device, List<FlowEntry>> flows = new TreeMap<>(Comparators.ELEMENT_COMPARATOR);
List<FlowEntry> rules;
FlowEntryState s = null;
if (state != null && !state.equals("any")) {
s = FlowEntryState.valueOf(state.toUpperCase());
}
Iterable<Device> devices = null;
if (uri == null) {
devices = deviceService.getDevices();
} else {
Device dev = deviceService.getDevice(DeviceId.deviceId(uri));
devices = (dev == null) ? deviceService.getDevices()
: Collections.singletonList(dev);
}
for (Device d : devices) {
if (s == null) {
rules = newArrayList(service.getFlowEntries(d.id()));
} else {
rules = newArrayList();
for (FlowEntry f : service.getFlowEntries(d.id())) {
if (f.state().equals(s)) {
rules.add(f);
}
}
}
rules.sort(Comparators.FLOW_RULE_COMPARATOR);
flows.put(d, rules);
}
return flows;
}
/**
* Prints flows.
*
* @param d the device
* @param flows the set of flows for that device
* @param coreService core system service
*/
protected void printFlows(Device d, List<FlowEntry> flows,
CoreService coreService) {
boolean empty = flows == null || flows.isEmpty();
print("deviceId=%s, flowRuleCount=%d", d.id(), empty ? 0 : flows.size());
if (!empty) {
for (FlowEntry f : flows) {
ApplicationId appId = coreService.getAppId(f.appId());
print(FMT, Long.toHexString(f.id().value()), f.state(),
f.bytes(), f.packets(), f.life(), f.priority(), f.tableId(),
appId != null ? appId.name() : "<none>",
f.payLoad() == null ? null : f.payLoad().payLoad().toString());
print(SFMT, f.selector().criteria());
print(TFMT, f.treatment());
}
}
}
}
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