BUG-3888 : refactoring, removed unused session validators

[bgpcep.git] / bgp / rib-impl / src / main / java / org / opendaylight / protocol / bgp / rib / impl / BGPClientSessionValidator.java

diff --git a/bgp/rib-impl/src/main/java/org/opendaylight/protocol/bgp/rib/impl/BGPClientSessionValidator.java b/bgp/rib-impl/src/main/java/org/opendaylight/protocol/bgp/rib/impl/BGPClientSessionValidator.java
deleted file mode 100644 (file)
index 0443e04..0000000
--- a/bgp/rib-impl/src/main/java/org/opendaylight/protocol/bgp/rib/impl/BGPClientSessionValidator.java
+++ /dev/null
@@ -1,101 +0,0 @@
-/*
- * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
- *
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Public License v1.0 which accompanies this distribution,
- * and is available at http://www.eclipse.org/legal/epl-v10.html
- */
-
-package org.opendaylight.protocol.bgp.rib.impl;
-
-import com.google.common.base.Optional;
-import io.netty.buffer.ByteBuf;
-import io.netty.buffer.Unpooled;
-import java.util.List;
-import org.opendaylight.protocol.bgp.parser.AsNumberUtil;
-import org.opendaylight.protocol.bgp.parser.BGPDocumentedException;
-import org.opendaylight.protocol.bgp.parser.BGPError;
-import org.opendaylight.protocol.bgp.parser.impl.message.open.As4CapabilityHandler;
-import org.opendaylight.protocol.bgp.rib.impl.spi.BGPSessionPreferences;
-import org.opendaylight.protocol.bgp.rib.impl.spi.BGPSessionValidator;
-import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.AsNumber;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.Open;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.open.message.BgpParameters;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.open.message.bgp.parameters.OptionalCapabilities;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.open.message.bgp.parameters.optional.capabilities.CParameters;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.open.message.bgp.parameters.optional.capabilities.CParametersBuilder;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.open.message.bgp.parameters.optional.capabilities.c.parameters.As4BytesCapability;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-/**
- * Validates Bgp sessions established from current device to remote.
- */
-public class BGPClientSessionValidator implements BGPSessionValidator {
-
-    private static final Logger LOG = LoggerFactory.getLogger(BGPClientSessionValidator.class);
-
-    private final AsNumber remoteAs;
-
-    public BGPClientSessionValidator(final AsNumber remoteAs) {
-        this.remoteAs = remoteAs;
-    }
-
-    /**
-     * Validates with exception:
-     * <ul>
-     * <li>correct remote AS attribute</li>
-     * <li>non empty BgpParameters collection</li>
-     * </ul>
-     *
-     * Validates with log message:
-     * <ul>
-     * <li>local BgpParameters are superset of remote BgpParameters</li>
-     * </ul>
-     */
-    @Override
-    public void validate(final Open openObj, final BGPSessionPreferences localPref) throws BGPDocumentedException {
-        final AsNumber as = AsNumberUtil.advertizedAsNumber(openObj);
-        if (!this.remoteAs.equals(as)) {
-            LOG.warn("Unexpected remote AS number. Expecting {}, got {}", this.remoteAs, as);
-            throw new BGPDocumentedException("Peer AS number mismatch", BGPError.BAD_PEER_AS);
-        }
-        //https://tools.ietf.org/html/rfc6286#section-2.2
-        if (openObj.getBgpIdentifier() != null &&  openObj.getBgpIdentifier().equals(localPref.getBgpId())) {
-            LOG.warn("Remote and local BGP Identifiers are the same: {}", openObj.getBgpIdentifier());
-            throw new BGPDocumentedException("Remote and local BGP Identifiers are the same.", BGPError.BAD_BGP_ID);
-        }
-
-        final List<BgpParameters> prefs = openObj.getBgpParameters();
-        if (prefs != null) {
-            if(getAs4BytesCapability(localPref.getParams()).isPresent() && !getAs4BytesCapability(prefs).isPresent()) {
-                throw new BGPDocumentedException("The peer must advertise AS4Bytes capability.", BGPError.UNSUPPORTED_CAPABILITY,
-                        serializeAs4BytesCapability(getAs4BytesCapability(localPref.getParams()).get()));
-            }
-            if (!prefs.containsAll(localPref.getParams())) {
-                LOG.info("BGP Open message session parameters differ, session still accepted.");
-            }
-        } else {
-            throw new BGPDocumentedException("Open message unacceptable. Check the configuration of BGP speaker.", BGPError.UNSPECIFIC_OPEN_ERROR);
-        }
-    }
-
-    private static Optional<As4BytesCapability> getAs4BytesCapability(final List<BgpParameters> prefs) {
-        for(final BgpParameters param : prefs) {
-            for (final OptionalCapabilities capa : param.getOptionalCapabilities()) {
-                final CParameters cParam = capa.getCParameters();
-                if(cParam.getAs4BytesCapability() !=null) {
-                    return Optional.of(cParam.getAs4BytesCapability());
-                }
-            }
-        }
-        return Optional.absent();
-    }
-
-    private static byte[] serializeAs4BytesCapability(final As4BytesCapability as4Capability) {
-        final ByteBuf buffer = Unpooled.buffer(1 /*CODE*/ + 1 /*LENGTH*/ + Integer.SIZE / Byte.SIZE /*4 byte value*/);
-        final As4CapabilityHandler serializer = new As4CapabilityHandler();
-        serializer.serializeCapability(new CParametersBuilder().setAs4BytesCapability(as4Capability).build(), buffer);
-        return buffer.array();
-    }
-}