/**
* Removes a reliable request from the retry list. Does nothing if null is passed
* or if the message id is not known to the retry list.
*
* @param a Message id of the request to remove.
*/
internal void removeRequest(EbXmlMessage a)
{
if (a == null)
{
return;
}
string m = a.getMessageId();
if (requests.ContainsKey(m))
{
requests.Remove(m);
depersist(a);
}
}
/**
* Assembles an ebXML acknowledgment.
*/
private string makeEbXmlAck(EbXmlMessage msg, bool replaceCpaId)
{
StringBuilder sb = new StringBuilder(ebxmlacktemplate);
sb.Replace("__FROM_PARTY_ID__", msg.Header.FromPartyKey);
//sb.Replace("__FROM_PARTY_ID__", msg.Header.ToPartyKey);
string mp = ConnectionManager.getInstance().SdsConnection.MyPartyKey;
sb.Replace("__TO_PARTY_ID__", mp);
sb.Replace("__ORIGINAL_MESSAGE_ID__", msg.getMessageId());
sb.Replace("__CONVERSATION_ID__", msg.Header.ConversationId);
if (replaceCpaId)
{
sb.Replace("__CPA_ID__", msg.Header.CpaId);
}
sb.Replace("__ACK_MESSAGE_ID__", System.Guid.NewGuid().ToString().ToUpper());
sb.Replace("__ACK_TIMESTAMP__", DateTime.Now.ToString(EbXmlHeader.ISO8601DATEFORMAT));
return(sb.ToString());
}
private void depersist(EbXmlMessage a)
{
string pfile = messageDirectory + a.getOdsCode() + "_" + a.getMessageId();
try
{
if (File.Exists(pfile))
{
File.Delete(pfile);
}
}
catch (Exception e)
{
EventLog logger = new EventLog("Application");
logger.Source = LOGSOURCE;
StringBuilder sbe = new StringBuilder("Unexpected error ");
sbe.Append(e.ToString());
sbe.Append(" de-persisting message ");
sbe.Append(pfile);
logger.WriteEntry(sbe.ToString(), EventLogEntryType.Error);
}
}
/** Called at start-up if the system needs to load any persisted, reliable messages
* for sending. This applies the persist duration for the message type to the declared
* timestamp, and will run the expire() method on anything that has expired whilst
* the MHS was down.
*/
public void loadPersistedMessages()
{
string[] files = Directory.GetFiles(messageDirectory);
EbXmlMessage ebxml = null;
foreach (String f in files)
{
using (FileStream fs = new FileStream(f, FileMode.Open))
{
try
{
ebxml = new EbXmlMessage(fs);
// "f" is now of the form "odscode_messageid" so get the ods code and set it here.
string ods = f.Substring(0, f.IndexOf("_")).Substring(f.LastIndexOf("\\") + 1);
ebxml.setOdsCode(ods);
// Do an SDS lookup and populate retry interval, persist duration
// and retry cound in ebxml.
List <SdsTransmissionDetails> sdsdetails = sdsConnection.getTransmissionDetails(ebxml.Header.SvcIA, ods, ebxml.HL7Message.ToAsid, ebxml.Header.ToPartyKey);
if (sdsdetails.Count == 0)
{
throw new Exception("Cannot resolve SDS details for persisted message: " + f);
}
if (sdsdetails.Count > 1)
{
throw new Exception("Ambiguous SDS details for persisted message: " + f);
}
SdsTransmissionDetails sds = sdsdetails[0];
ebxml.PersistDuration = sds.PersistDuration;
ebxml.RetryCount = sds.Retries;
ebxml.RetryInterval = sds.RetryInterval;
}
catch (Exception e)
{
EventLog logger = new EventLog("Application");
logger.Source = LOGSOURCE;
StringBuilder sbe = new StringBuilder("Failed to load persisted ebXml message ");
sbe.Append(f);
sbe.Append(" due to exception ");
sbe.Append(e.Message);
sbe.Append(" at ");
sbe.Append(e.StackTrace);
logger.WriteEntry(sbe.ToString(), EventLogEntryType.FailureAudit);
continue;
}
}
DateTime check = DateTime.Now;
TimeSpan pd = getPersistDuration(ebxml.Header.SvcIA);
DateTime expiryTime = ebxml.Started.Add(pd);
if (expiryTime.CompareTo(check) < 0)
{
depersist(ebxml);
ebxml.Expire();
}
else
{
requests.Add(ebxml.getMessageId(), ebxml);
}
}
}
private void depersist(EbXmlMessage a)
{
string pfile = messageDirectory + a.getOdsCode() + "_" + a.getMessageId();
try
{
if (File.Exists(pfile))
File.Delete(pfile);
}
catch (Exception e)
{
EventLog logger = new EventLog("Application");
logger.Source = LOGSOURCE;
StringBuilder sbe = new StringBuilder("Unexpected error ");
sbe.Append(e.ToString());
sbe.Append(" de-persisting message ");
sbe.Append(pfile);
logger.WriteEntry(sbe.ToString(), EventLogEntryType.Error);
}
}
/**
* Removes a reliable request from the retry list. Does nothing if null is passed
* or if the message id is not known to the retry list.
*
* @param a Message id of the request to remove.
*/
internal void removeRequest(EbXmlMessage a)
{
if (a == null)
return;
string m = a.getMessageId();
if (requests.ContainsKey(m))
{
requests.Remove(m);
depersist(a);
}
}
/** Called at start-up if the system needs to load any persisted, reliable messages
* for sending. This applies the persist duration for the message type to the declared
* timestamp, and will run the expire() method on anything that has expired whilst
* the MHS was down.
*/
public void loadPersistedMessages()
{
string[] files = Directory.GetFiles(messageDirectory);
EbXmlMessage ebxml = null;
foreach (String f in files)
{
using (FileStream fs = new FileStream(f, FileMode.Open))
{
try
{
ebxml = new EbXmlMessage(fs);
// "f" is now of the form "odscode_messageid" so get the ods code and set it here.
string ods = f.Substring(0, f.IndexOf("_")).Substring(f.LastIndexOf("\\") + 1);
ebxml.setOdsCode(ods);
// Do an SDS lookup and populate retry interval, persist duration
// and retry cound in ebxml.
List<SdsTransmissionDetails> sdsdetails = sdsConnection.getTransmissionDetails(ebxml.Header.SvcIA, ods, ebxml.HL7Message.ToAsid, ebxml.Header.ToPartyKey);
if (sdsdetails.Count == 0)
throw new Exception("Cannot resolve SDS details for persisted message: " + f);
if (sdsdetails.Count > 1)
throw new Exception("Ambiguous SDS details for persisted message: " + f);
SdsTransmissionDetails sds = sdsdetails[0];
ebxml.PersistDuration = sds.PersistDuration;
ebxml.RetryCount = sds.Retries;
ebxml.RetryInterval = sds.RetryInterval;
}
catch(Exception e)
{
EventLog logger = new EventLog("Application");
logger.Source = LOGSOURCE;
StringBuilder sbe = new StringBuilder("Failed to load persisted ebXml message ");
sbe.Append(f);
sbe.Append(" due to exception ");
sbe.Append(e.Message);
sbe.Append(" at ");
sbe.Append(e.StackTrace);
logger.WriteEntry(sbe.ToString(), EventLogEntryType.FailureAudit);
continue;
}
}
DateTime check = DateTime.Now;
TimeSpan pd = getPersistDuration(ebxml.Header.SvcIA);
DateTime expiryTime = ebxml.Started.Add(pd);
if (expiryTime.CompareTo(check) < 0)
{
depersist(ebxml);
ebxml.Expire();
}
else
{
requests.Add(ebxml.getMessageId(), ebxml);
}
}
}