How to use

writeEssentialData

method

in

com.gemstone.gemfire.distributed.internal.membership.InternalDistributedMember

@Override
public void writeMember(InternalDistributedMember member, DataOutput out) throws IOException {
 member.writeEssentialData(out);
 
}

@Override
protected void writeMember(InternalDistributedMember member, DataOutput out) throws IOException {
 member.writeEssentialData(out);
 
}

@Override
public void writeMember(InternalDistributedMember member, DataOutput out) throws IOException {
 member.writeEssentialData(out);
 
}

@Override
protected void writeMember(InternalDistributedMember member, DataOutput out) throws IOException {
 member.writeEssentialData(out);
 
}

public void toData(DataOutput out) throws IOException {
 int size = this.serverFilterInfo.size();
 out.writeInt(size);
 for (Map.Entry<InternalDistributedMember, FilterInfo> e: this.serverFilterInfo.entrySet()) { 
  InternalDistributedMember member = e.getKey();
  member.writeEssentialData(out);
  FilterInfo fInfo = e.getValue();
  InternalDataSerializer.invokeToData(fInfo, out);      
 }
}

public void toData(DataOutput out) throws IOException {
 int size = this.serverFilterInfo.size();
 out.writeInt(size);
 for (Map.Entry<InternalDistributedMember, FilterInfo> e: this.serverFilterInfo.entrySet()) { 
  InternalDistributedMember member = e.getKey();
  member.writeEssentialData(out);
  FilterInfo fInfo = e.getValue();
  InternalDataSerializer.invokeToData(fInfo, out);      
 }
}

public void toDataPre_GFXD_1_4_0_0(DataOutput out) throws IOException {
 super.toData(out);
 out.writeByte(this.op.ordinal());
 //      out.writeLong(this.regionVersion);
 out.writeInt(this.regionGCVersions.size());
 boolean persistent = false;
 if (!regionGCVersions.isEmpty()) {
  VersionSource firstEntry = regionGCVersions.keySet().iterator().next();
  if (firstEntry instanceof DiskStoreID) {
   persistent = true;
  }
 }
 out.writeBoolean(persistent);
 for (Map.Entry<VersionSource, Long> entry : this.regionGCVersions.entrySet()) {
  VersionSource member = entry.getKey();
  if (member instanceof DiskStoreID) {
   InternalDataSerializer.invokeToData((DiskStoreID) member, out);
  } else {
   ((InternalDistributedMember) member).writeEssentialData(out);
  }
  out.writeLong(entry.getValue());
 }
}

public void toDataPre_GFE_8_0_0_0(DataOutput out) throws IOException {
 super.toData(out);
 out.writeByte(this.op.ordinal());
 //      out.writeLong(this.regionVersion);
 out.writeInt(this.regionGCVersions.size());
 boolean persistent = false;
 if (!regionGCVersions.isEmpty()) {
  VersionSource firstEntry = regionGCVersions.keySet().iterator().next();
  if (firstEntry instanceof DiskStoreID) {
   persistent = true;
  }
 }
 out.writeBoolean(persistent);
 for (Map.Entry<VersionSource, Long> entry : this.regionGCVersions.entrySet()) {
  VersionSource member = entry.getKey();
  if (member instanceof DiskStoreID) {
   InternalDataSerializer.invokeToData((DiskStoreID) member, out);
  } else {
   ((InternalDistributedMember) member).writeEssentialData(out);
  }
  out.writeLong(entry.getValue());
 }
}

Map<MemberIdentifier, Integer> seenIds = new HashMap();
myId.writeEssentialData(dop); // added in 7.0 for version tag processing in fromData

Map<MemberIdentifier, Integer> seenIds = new HashMap();
myId.writeEssentialData(dop); // added in 7.0 for version tag processing in fromData

private static byte[] initializeAndGetDSEventIdentity(DistributedSystem sys)
{
 if (sys == null) {
  // DistributedSystem is required now before handshaking -Kirk
  throw new IllegalStateException(LocalizedStrings.ClientProxyMembershipID_ATTEMPTING_TO_HANDSHAKE_WITH_CACHESERVER_BEFORE_CREATING_DISTRIBUTEDSYSTEM_AND_CACHE.toLocalizedString());
 }
 if (EventID.system != sys) {
  // DS already exists... make sure it's for current DS connection
  EventID.systemMemberId = sys.getDistributedMember();
  try {
   HeapDataOutputStream hdos = new HeapDataOutputStream(256, Version.CURRENT);
   ((InternalDistributedMember)EventID.systemMemberId).writeEssentialData(hdos);
   client_side_event_identity = hdos.toByteArray();
  }
  catch (IOException ioe) {
   throw new InternalGemFireException(LocalizedStrings.ClientProxyMembershipID_UNABLE_TO_SERIALIZE_IDENTITY.toLocalizedString(), ioe);
  }
  EventID.system = sys;
 }
 return EventID.client_side_event_identity;

}

/**
 * Convert a ClientProxyMembershipID distribted member ID array into one
 * usable by EventIDs 
 * @param client the client's ID
 * @return a byte array that may be used in EventID formation
 */
public static byte[] getMembershipId(ClientProxyMembershipID client) {
 try {
  HeapDataOutputStream hdos = new HeapDataOutputStream(256, Version.CURRENT);
  ((InternalDistributedMember)client.getDistributedMember()).writeEssentialData(hdos);
  return hdos.toByteArray();
 }
 catch (IOException ioe) {
  throw new InternalGemFireException(LocalizedStrings.ClientProxyMembershipID_UNABLE_TO_SERIALIZE_IDENTITY.toLocalizedString(), ioe);
 }
}

private static byte[] initializeAndGetDSEventIdentity(DistributedSystem sys)
{
 if (sys == null) {
  // DistributedSystem is required now before handshaking -Kirk
  throw new IllegalStateException(LocalizedStrings.ClientProxyMembershipID_ATTEMPTING_TO_HANDSHAKE_WITH_CACHESERVER_BEFORE_CREATING_DISTRIBUTEDSYSTEM_AND_CACHE.toLocalizedString());
 }
 if (EventID.system != sys) {
  // DS already exists... make sure it's for current DS connection
  EventID.systemMemberId = sys.getDistributedMember();
  try {
   HeapDataOutputStream hdos = new HeapDataOutputStream(256, Version.CURRENT);
   ((InternalDistributedMember)EventID.systemMemberId).writeEssentialData(hdos);
   client_side_event_identity = hdos.toByteArray();
  }
  catch (IOException ioe) {
   throw new InternalGemFireException(LocalizedStrings.ClientProxyMembershipID_UNABLE_TO_SERIALIZE_IDENTITY.toLocalizedString(), ioe);
  }
  EventID.system = sys;
 }
 return EventID.client_side_event_identity;

}

/**
 * Convert a ClientProxyMembershipID distribted member ID array into one
 * usable by EventIDs 
 * @param client the client's ID
 * @return a byte array that may be used in EventID formation
 */
public static byte[] getMembershipId(ClientProxyMembershipID client) {
 try {
  HeapDataOutputStream hdos = new HeapDataOutputStream(256, Version.CURRENT);
  ((InternalDistributedMember)client.getDistributedMember()).writeEssentialData(hdos);
  return hdos.toByteArray();
 }
 catch (IOException ioe) {
  throw new InternalGemFireException(LocalizedStrings.ClientProxyMembershipID_UNABLE_TO_SERIALIZE_IDENTITY.toLocalizedString(), ioe);
 }
}