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Cleanup of LinkProperties.

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Test: runtest
Change-Id: I7299de93a79901635ce755a2d933666ee43767d5
This commit is contained in:
Chalard Jean
2018-06-07 13:27:00 +09:00
parent abf2a3f652
commit d51966a41b
1 changed files with 98 additions and 87 deletions
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183
core/java/android/net/LinkProperties.java
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@@ -32,6 +32,7 @@ import java.util.Collections;
import java.util.Hashtable;
import java.util.List;
import java.util.Objects;
import java.util.StringJoiner;
/**
* Describes the properties of a network link.
@@ -48,13 +49,13 @@ import java.util.Objects;
public final class LinkProperties implements Parcelable {
// The interface described by the network link.
private String mIfaceName;
private ArrayList<LinkAddress> mLinkAddresses = new ArrayList<LinkAddress>();
private ArrayList<InetAddress> mDnses = new ArrayList<InetAddress>();
private ArrayList<InetAddress> mValidatedPrivateDnses = new ArrayList<InetAddress>();
private ArrayList<LinkAddress> mLinkAddresses = new ArrayList<>();
private ArrayList<InetAddress> mDnses = new ArrayList<>();
private ArrayList<InetAddress> mValidatedPrivateDnses = new ArrayList<>();
private boolean mUsePrivateDns;
private String mPrivateDnsServerName;
private String mDomains;
private ArrayList<RouteInfo> mRoutes = new ArrayList<RouteInfo>();
private ArrayList<RouteInfo> mRoutes = new ArrayList<>();
private ProxyInfo mHttpProxy;
private int mMtu;
// in the format "rmem_min,rmem_def,rmem_max,wmem_min,wmem_def,wmem_max"
@@ -66,15 +67,14 @@ public final class LinkProperties implements Parcelable {
// Stores the properties of links that are "stacked" above this link.
// Indexed by interface name to allow modification and to prevent duplicates being added.
private Hashtable<String, LinkProperties> mStackedLinks =
new Hashtable<String, LinkProperties>();
private Hashtable<String, LinkProperties> mStackedLinks = new Hashtable<>();
/**
* @hide
*/
public static class CompareResult<T> {
public final List<T> removed = new ArrayList<T>();
public final List<T> added = new ArrayList<T>();
public final List<T> removed = new ArrayList<>();
public final List<T> added = new ArrayList<>();
public CompareResult() {}
@@ -93,12 +93,9 @@ public final class LinkProperties implements Parcelable {
@Override
public String toString() {
String retVal = "removed=[";
for (T addr : removed) retVal += addr.toString() + ",";
retVal += "] added=[";
for (T addr : added) retVal += addr.toString() + ",";
retVal += "]";
return retVal;
return "removed=[" + TextUtils.join(",", removed)
+ "] added=[" + TextUtils.join(",", added)
+ "]";
}
}
@@ -120,7 +117,7 @@ public final class LinkProperties implements Parcelable {
public static ProvisioningChange compareProvisioning(
LinkProperties before, LinkProperties after) {
if (before.isProvisioned() && after.isProvisioned()) {
// On dualstack networks, DHCPv4 renewals can occasionally fail.
// On dual-stack networks, DHCPv4 renewals can occasionally fail.
// When this happens, IPv6-reachable services continue to function
// normally but IPv4-only services (naturally) fail.
//
@@ -131,7 +128,7 @@ public final class LinkProperties implements Parcelable {
//
// For users, this is confusing and unexpected behaviour, and is
// not necessarily easy to diagnose. Therefore, we treat changing
// from a dualstack network to an IPv6-only network equivalent to
// from a dual-stack network to an IPv6-only network equivalent to
// a total loss of provisioning.
//
// For one such example of this, see b/18867306.
@@ -139,7 +136,7 @@ public final class LinkProperties implements Parcelable {
// Additionally, losing IPv6 provisioning can result in TCP
// connections getting stuck until timeouts fire and other
// baffling failures. Therefore, loss of either IPv4 or IPv6 on a
// previously dualstack network is deemed a lost of provisioning.
// previously dual-stack network is deemed a lost of provisioning.
if ((before.isIPv4Provisioned() && !after.isIPv4Provisioned()) ||
(before.isIPv6Provisioned() && !after.isIPv6Provisioned())) {
return ProvisioningChange.LOST_PROVISIONING;
@@ -165,22 +162,19 @@ public final class LinkProperties implements Parcelable {
*/
public LinkProperties(LinkProperties source) {
if (source != null) {
mIfaceName = source.getInterfaceName();
for (LinkAddress l : source.getLinkAddresses()) mLinkAddresses.add(l);
for (InetAddress i : source.getDnsServers()) mDnses.add(i);
for (InetAddress i : source.getValidatedPrivateDnsServers()) {
mValidatedPrivateDnses.add(i);
}
mIfaceName = source.mIfaceName;
mLinkAddresses.addAll(source.mLinkAddresses);
mDnses.addAll(source.mDnses);
mValidatedPrivateDnses.addAll(source.mValidatedPrivateDnses);
mUsePrivateDns = source.mUsePrivateDns;
mPrivateDnsServerName = source.mPrivateDnsServerName;
mDomains = source.getDomains();
for (RouteInfo r : source.getRoutes()) mRoutes.add(r);
mHttpProxy = (source.getHttpProxy() == null) ?
null : new ProxyInfo(source.getHttpProxy());
mDomains = source.mDomains;
mRoutes.addAll(source.mRoutes);
mHttpProxy = (source.mHttpProxy == null) ? null : new ProxyInfo(source.mHttpProxy);
for (LinkProperties l: source.mStackedLinks.values()) {
addStackedLink(l);
}
setMtu(source.getMtu());
setMtu(source.mMtu);
mTcpBufferSizes = source.mTcpBufferSizes;
}
}
@@ -194,7 +188,7 @@ public final class LinkProperties implements Parcelable {
*/
public void setInterfaceName(String iface) {
mIfaceName = iface;
ArrayList<RouteInfo> newRoutes = new ArrayList<RouteInfo>(mRoutes.size());
ArrayList<RouteInfo> newRoutes = new ArrayList<>(mRoutes.size());
for (RouteInfo route : mRoutes) {
newRoutes.add(routeWithInterface(route));
}
@@ -214,8 +208,8 @@ public final class LinkProperties implements Parcelable {
* @hide
*/
public List<String> getAllInterfaceNames() {
List<String> interfaceNames = new ArrayList<String>(mStackedLinks.size() + 1);
if (mIfaceName != null) interfaceNames.add(new String(mIfaceName));
List<String> interfaceNames = new ArrayList<>(mStackedLinks.size() + 1);
if (mIfaceName != null) interfaceNames.add(mIfaceName);
for (LinkProperties stacked: mStackedLinks.values()) {
interfaceNames.addAll(stacked.getAllInterfaceNames());
}
@@ -229,11 +223,11 @@ public final class LinkProperties implements Parcelable {
* prefix lengths for each address. This is a simplified utility alternative to
* {@link LinkProperties#getLinkAddresses}.
*
* @return An umodifiable {@link List} of {@link InetAddress} for this link.
* @return An unmodifiable {@link List} of {@link InetAddress} for this link.
* @hide
*/
public List<InetAddress> getAddresses() {
List<InetAddress> addresses = new ArrayList<InetAddress>();
List<InetAddress> addresses = new ArrayList<>();
for (LinkAddress linkAddress : mLinkAddresses) {
addresses.add(linkAddress.getAddress());
}
@@ -245,7 +239,7 @@ public final class LinkProperties implements Parcelable {
* @hide
*/
public List<InetAddress> getAllAddresses() {
List<InetAddress> addresses = new ArrayList<InetAddress>();
List<InetAddress> addresses = new ArrayList<>();
for (LinkAddress linkAddress : mLinkAddresses) {
addresses.add(linkAddress.getAddress());
}
@@ -322,8 +316,7 @@ public final class LinkProperties implements Parcelable {
* @hide
*/
public List<LinkAddress> getAllLinkAddresses() {
List<LinkAddress> addresses = new ArrayList<LinkAddress>();
addresses.addAll(mLinkAddresses);
List<LinkAddress> addresses = new ArrayList<>(mLinkAddresses);
for (LinkProperties stacked: mStackedLinks.values()) {
addresses.addAll(stacked.getAllLinkAddresses());
}
@@ -391,7 +384,7 @@ public final class LinkProperties implements Parcelable {
/**
* Returns all the {@link InetAddress} for DNS servers on this link.
*
* @return An umodifiable {@link List} of {@link InetAddress} for DNS servers on
* @return An unmodifiable {@link List} of {@link InetAddress} for DNS servers on
* this link.
*/
public List<InetAddress> getDnsServers() {
@@ -653,8 +646,7 @@ public final class LinkProperties implements Parcelable {
* @hide
*/
public List<RouteInfo> getAllRoutes() {
List<RouteInfo> routes = new ArrayList<>();
routes.addAll(mRoutes);
List<RouteInfo> routes = new ArrayList<>(mRoutes);
for (LinkProperties stacked: mStackedLinks.values()) {
routes.addAll(stacked.getAllRoutes());
}
@@ -725,9 +717,9 @@ public final class LinkProperties implements Parcelable {
*/
public @NonNull List<LinkProperties> getStackedLinks() {
if (mStackedLinks.isEmpty()) {
return Collections.EMPTY_LIST;
return Collections.emptyList();
}
List<LinkProperties> stacked = new ArrayList<LinkProperties>();
List<LinkProperties> stacked = new ArrayList<>();
for (LinkProperties link : mStackedLinks.values()) {
stacked.add(new LinkProperties(link));
}
@@ -761,57 +753,76 @@ public final class LinkProperties implements Parcelable {
@Override
public String toString() {
String ifaceName = (mIfaceName == null ? "" : "InterfaceName: " + mIfaceName + " ");
// Space as a separator, so no need for spaces at start/end of the individual fragments.
final StringJoiner resultJoiner = new StringJoiner(" ", "{", "}");
String linkAddresses = "LinkAddresses: [";
for (LinkAddress addr : mLinkAddresses) linkAddresses += addr.toString() + ",";
linkAddresses += "] ";
if (mIfaceName != null) {
resultJoiner.add("InterfaceName:");
resultJoiner.add(mIfaceName);
}
String dns = "DnsAddresses: [";
for (InetAddress addr : mDnses) dns += addr.getHostAddress() + ",";
dns += "] ";
resultJoiner.add("LinkAddresses: [");
if (!mLinkAddresses.isEmpty()) {
resultJoiner.add(TextUtils.join(",", mLinkAddresses));
}
resultJoiner.add("]");
String usePrivateDns = "UsePrivateDns: " + mUsePrivateDns + " ";
resultJoiner.add("DnsAddresses: [");
if (!mDnses.isEmpty()) {
resultJoiner.add(TextUtils.join(",", mDnses));
}
resultJoiner.add("]");
if (mUsePrivateDns) {
resultJoiner.add("UsePrivateDns: true");
}
String privateDnsServerName = "";
if (mPrivateDnsServerName != null) {
privateDnsServerName = "PrivateDnsServerName: " + mPrivateDnsServerName + " ";
resultJoiner.add("PrivateDnsServerName:");
resultJoiner.add(mPrivateDnsServerName);
}
String validatedPrivateDns = "";
if (!mValidatedPrivateDnses.isEmpty()) {
validatedPrivateDns = "ValidatedPrivateDnsAddresses: [";
for (InetAddress addr : mValidatedPrivateDnses) {
validatedPrivateDns += addr.getHostAddress() + ",";
final StringJoiner validatedPrivateDnsesJoiner =
new StringJoiner(",", "ValidatedPrivateDnsAddresses: [", "]");
for (final InetAddress addr : mValidatedPrivateDnses) {
validatedPrivateDnsesJoiner.add(addr.getHostAddress());
}
validatedPrivateDns += "] ";
resultJoiner.add(validatedPrivateDnsesJoiner.toString());
}
String domainName = "Domains: " + mDomains;
resultJoiner.add("Domains:");
resultJoiner.add(mDomains);
String mtu = " MTU: " + mMtu;
resultJoiner.add("MTU:");
resultJoiner.add(Integer.toString(mMtu));
String tcpBuffSizes = "";
if (mTcpBufferSizes != null) {
tcpBuffSizes = " TcpBufferSizes: " + mTcpBufferSizes;
resultJoiner.add("TcpBufferSizes:");
resultJoiner.add(mTcpBufferSizes);
}
String routes = " Routes: [";
for (RouteInfo route : mRoutes) routes += route.toString() + ",";
routes += "] ";
String proxy = (mHttpProxy == null ? "" : " HttpProxy: " + mHttpProxy.toString() + " ");
resultJoiner.add("Routes: [");
if (!mRoutes.isEmpty()) {
resultJoiner.add(TextUtils.join(",", mRoutes));
}
resultJoiner.add("]");
String stacked = "";
if (mStackedLinks.values().size() > 0) {
stacked += " Stacked: [";
for (LinkProperties link: mStackedLinks.values()) {
stacked += " [" + link.toString() + " ],";
if (mHttpProxy != null) {
resultJoiner.add("HttpProxy:");
resultJoiner.add(mHttpProxy.toString());
}
stacked += "] ";
final Collection<LinkProperties> stackedLinksValues = mStackedLinks.values();
if (!stackedLinksValues.isEmpty()) {
final StringJoiner stackedLinksJoiner = new StringJoiner(",", "Stacked: [", "]");
for (final LinkProperties lp : stackedLinksValues) {
stackedLinksJoiner.add("[ " + lp + " ]");
}
return "{" + ifaceName + linkAddresses + routes + dns + usePrivateDns
+ privateDnsServerName + validatedPrivateDns + domainName + mtu + tcpBuffSizes + proxy
+ stacked + "}";
resultJoiner.add(stackedLinksJoiner.toString());
}
return resultJoiner.toString();
}
/**
@@ -1028,7 +1039,7 @@ public final class LinkProperties implements Parcelable {
if (mDomains == null) {
if (targetDomains != null) return false;
} else {
if (mDomains.equals(targetDomains) == false) return false;
if (!mDomains.equals(targetDomains)) return false;
}
return (mDnses.size() == targetDnses.size()) ?
mDnses.containsAll(targetDnses) : false;
@@ -1130,7 +1141,6 @@ public final class LinkProperties implements Parcelable {
return Objects.equals(mTcpBufferSizes, target.mTcpBufferSizes);
}
@Override
/**
* Compares this {@code LinkProperties} instance against the target
* LinkProperties in {@code obj}. Two LinkPropertieses are equal if
@@ -1145,13 +1155,14 @@ public final class LinkProperties implements Parcelable {
* @param obj the object to be tested for equality.
* @return {@code true} if both objects are equal, {@code false} otherwise.
*/
@Override
public boolean equals(Object obj) {
if (this == obj) return true;
if (!(obj instanceof LinkProperties)) return false;
LinkProperties target = (LinkProperties) obj;
/**
/*
* This method does not check that stacked interfaces are equal, because
* stacked interfaces are not so much a property of the link as a
* description of connections between links.
@@ -1258,12 +1269,13 @@ public final class LinkProperties implements Parcelable {
}
@Override
/**
* generate hashcode based on significant fields
* Generate hashcode based on significant fields
*
* Equal objects must produce the same hash code, while unequal objects
* may have the same hash codes.
*/
@Override
public int hashCode() {
return ((null == mIfaceName) ? 0 : mIfaceName.hashCode()
+ mLinkAddresses.size() * 31
@@ -1313,7 +1325,7 @@ public final class LinkProperties implements Parcelable {
} else {
dest.writeByte((byte)0);
}
ArrayList<LinkProperties> stackedLinks = new ArrayList(mStackedLinks.values());
ArrayList<LinkProperties> stackedLinks = new ArrayList<>(mStackedLinks.values());
dest.writeList(stackedLinks);
}
@@ -1331,7 +1343,7 @@ public final class LinkProperties implements Parcelable {
}
int addressCount = in.readInt();
for (int i = 0; i < addressCount; i++) {
netProp.addLinkAddress((LinkAddress) in.readParcelable(null));
netProp.addLinkAddress(in.readParcelable(null));
}
addressCount = in.readInt();
for (int i = 0; i < addressCount; i++) {
@@ -1353,10 +1365,10 @@ public final class LinkProperties implements Parcelable {
netProp.setTcpBufferSizes(in.readString());
addressCount = in.readInt();
for (int i = 0; i < addressCount; i++) {
netProp.addRoute((RouteInfo) in.readParcelable(null));
netProp.addRoute(in.readParcelable(null));
}
if (in.readByte() == 1) {
netProp.setHttpProxy((ProxyInfo) in.readParcelable(null));
netProp.setHttpProxy(in.readParcelable(null));
}
ArrayList<LinkProperties> stackedLinks = new ArrayList<LinkProperties>();
in.readList(stackedLinks, LinkProperties.class.getClassLoader());
@@ -1377,10 +1389,9 @@ public final class LinkProperties implements Parcelable {
*/
public static boolean isValidMtu(int mtu, boolean ipv6) {
if (ipv6) {
if (mtu >= MIN_MTU_V6 && mtu <= MAX_MTU) return true;
return mtu >= MIN_MTU_V6 && mtu <= MAX_MTU;
} else {
if (mtu >= MIN_MTU && mtu <= MAX_MTU) return true;
}
return false;
return mtu >= MIN_MTU && mtu <= MAX_MTU;
}
}
}