/// <summary>
/// Gets the scope name from the query string.
/// </summary>
/// <returns>scope name</returns>
private string GetScopeName(string[] RelativeUriSegments)
{
// The item at index 0 of the RelativeUriSegments array contains the scope name.
if (/*_serviceHost.*/ RelativeUriSegments.Length < 1 || String.IsNullOrEmpty(/*_serviceHost.*/ RelativeUriSegments[0].Trim()))
{
throw SyncServiceException.CreateBadRequestError(Strings.MissingScopeNameInRequest);
}
// Scope names are compared in a case insensitive manner and used as keys in lower case.
return /*_serviceHost.*/ (RelativeUriSegments[0].ToLowerInvariant());
}
/// <summary>
/// Generate the Id for an entity. The format currently is the OData Id.
/// i.e. http://baseUri/tableName(primarykeylist)
/// </summary>
/// <param name="entity"></param>
/// <returns></returns>
internal static string GenerateOfflineEntityId(IOfflineEntity entity)
{
var primaryKeyString = ReflectionUtility.GetPrimaryKeyString(entity);
if (String.IsNullOrEmpty(primaryKeyString))
{
throw SyncServiceException.CreateInternalServerError(
String.Format("GetPrimaryKeyString method returned an empty string for entity type {0}.", entity.GetType()));
}
return(String.Format(@"{0}/{1}({2})", "http://bitmobile.com/" + AppDomain.CurrentDomain.FriendlyName /*WebOperationContext.Current.IncomingRequest.UriTemplateMatch.BaseUri*/, entity.GetType().Name, primaryKeyString));
}
internal static SyncConflictResolution GetSyncConflictResolution(ConflictResolutionPolicy conflictResolutionPolicy)
{
switch (conflictResolutionPolicy)
{
case ConflictResolutionPolicy.ClientWins:
return(SyncConflictResolution.ClientWins);
case ConflictResolutionPolicy.ServerWins:
return(SyncConflictResolution.ServerWins);
default:
throw SyncServiceException.CreateInternalServerError(Strings.UnsupportedConflictResolutionPolicy);
}
}
internal static string GetContentType(SyncSerializationFormat format)
{
switch (format)
{
case SyncSerializationFormat.ODataAtom:
return("application/atom+xml");
case SyncSerializationFormat.ODataJson:
return("application/json");
default:
throw SyncServiceException.CreateBadRequestError("Unsupported serialization format");
}
}
/// <summary>
/// Verify query parameters for '$' etc.
/// </summary>
internal void VerifyQueryParameters()
{
NameValueCollection values = _operationContext.IncomingRequest.UriTemplateMatch.QueryParameters;
var queryDictionary = new Dictionary <string, string>();
foreach (string key in values.Keys)
{
if (!queryDictionary.ContainsKey(key))
{
queryDictionary.Add(key, values[key]);
}
else
{
throw SyncServiceException.CreateBadRequestError(Strings.DuplicateParametersInRequestUri);
}
}
}
private void ProcessSyncServiceException(SyncServiceException syncServiceException)
{
string exceptionMessage = WebUtil.GetExceptionMessage(syncServiceException);
SyncServiceTracer.TraceWarning(exceptionMessage);
_outgoingMessage = _syncConfiguration.UseVerboseErrors
? CreateExceptionMessage((HttpStatusCode)syncServiceException.StatusCode, exceptionMessage)
: CreateExceptionMessage((HttpStatusCode)syncServiceException.StatusCode, syncServiceException.Message);
// Add the "Allow" HTTP header if present._outgoingMessage.Properties[HttpResponseMessageProperty.Name].
if (!String.IsNullOrEmpty(syncServiceException.ResponseAllowHeader) &&
null != _outgoingMessage.Properties[HttpResponseMessageProperty.Name])
{
((HttpResponseMessageProperty)_outgoingMessage.Properties[HttpResponseMessageProperty.Name]).
Headers.Add("Allow", syncServiceException.ResponseAllowHeader);
}
}
/// <summary>
/// Get a dictionary that contains command parameters.
/// </summary>
/// <param name="queryStringCollection">Querystring represented as a NameValueCollection</param>
/// <returns>Dictionary of command parameter types and values.</returns>
private Dictionary <CommandParamType, object> GetCommandParameters(NameValueCollection queryStringCollection)
{
var commandParams = new Dictionary <CommandParamType, object>();
Dictionary <string, string> filterParams = GetFilterParamsFromIncomingRequest(queryStringCollection);
commandParams.Add(CommandParamType.FilterParameters, filterParams);
string scopeName = GetScopeName();
// Check the scope requested against the list of enabled scopes.
if (!_configuration.ScopeNames.Contains(scopeName.ToLowerInvariant()))
{
throw SyncServiceException.CreateBadRequestError(Strings.SyncScopeNotSupported);
}
commandParams.Add(CommandParamType.ScopeName, scopeName);
return(commandParams);
}
/// <summary>
/// Invokes the InitializeService user method.
/// </summary>
/// <param name="type">service type (used for reflection)</param>
private void InvokeStaticInitialization(Type type)
{
// Search for the InitializeService method going from most-specific to least-specific type.
const BindingFlags bindingAttr = BindingFlags.Public | BindingFlags.Static | BindingFlags.DeclaredOnly;
while (type != null)
{
MethodInfo info = type.GetMethod("InitializeService", bindingAttr, null, new[] { typeof(ISyncServiceConfiguration) }, null);
if ((info != null) && (info.ReturnType == typeof(void)))
{
ParameterInfo[] parameters = info.GetParameters();
if ((parameters.Length == 1) && !parameters[0].IsOut)
{
var objArray = new object[] { this };
try
{
info.Invoke(null, objArray);
return;
}
catch (TargetInvocationException exception)
{
SyncTracer.Warning("Exception invoking the static InitializeService method. Details {0}", WebUtil.GetExceptionMessage(exception));
ErrorHandler.HandleTargetInvocationException(exception);
throw;
}
}
}
type = type.BaseType;
}
// We should never exit from here when the InitializeService method is implemented.
throw SyncServiceException.CreateInternalServerError(Strings.InitializeServiceMethodNotImplemented);
}
/// <summary>
/// Get the value for a query string item.
/// </summary>
/// <param name="item">Item to search for in the incoming request uri.</param>
/// <returns>Value of the item.</returns>
internal string GetQueryStringItem(string item)
{
NameValueCollection values = _operationContext.IncomingRequest.UriTemplateMatch.QueryParameters;
// Check if we have the item by using a direct function (good performance)
// Note: the underlying data structure in a NameValueCollection is a hashtable.
string[] strArray = values.GetValues(item);
// If no match found, then loop through all keys and do a case insensitive search.
if ((strArray == null) || (strArray.Length == 0))
{
string str = null;
foreach (string str2 in values.Keys)
{
if ((str2 != null) && StringComparer.OrdinalIgnoreCase.Equals(str2.Trim(), item))
{
if (str != null)
{
// Bad request
throw SyncServiceException.CreateBadRequestError(Strings.DuplicateParametersInRequestUri);
}
str = str2;
strArray = values.GetValues(str2);
}
}
if ((strArray == null) || (strArray.Length == 0))
{
return(null);
}
}
if (strArray.Length != 1)
{
// syntax error, cannot have multiple querystring parameters with the same name.
throw SyncServiceException.CreateBadRequestError(Strings.DuplicateParametersInRequestUri);
}
return(strArray[0]);
}
/// <summary>
/// Validate the HTTP Verb for GET/POST and check if the URL matches the allowed format.
/// </summary>
internal void ValidateRequestHttpVerbAndSegments()
{
if (_operationContext == null)
{
throw SyncServiceException.CreateBadRequestError(Strings.NullWebOperationContext);
}
// Only allow GET and POST verbs
if (0 != String.Compare(RequestHttpMethod, "GET", StringComparison.InvariantCultureIgnoreCase) &&
0 != String.Compare(RequestHttpMethod, "POST", StringComparison.InvariantCultureIgnoreCase))
{
SyncTracer.Warning("Request HTTP method is not GET or POST. HTTP Method: {0}", RequestHttpMethod ?? String.Empty);
throw SyncServiceException.CreateMethodNotAllowed(Strings.UnsupportedHttpMethod, "GET, POST");
}
// Check if we have less than 2 relative segments. The maximum segments we can have is 2
// which is for /scope/operation.
if (RelativeUriSegments.Length > 2)
{
throw SyncServiceException.CreateBadRequestError(Strings.InvalidUrlFormat);
}
}
/// <summary>
/// Add a new filter parameter configuration.
/// </summary>
/// <param name="queryStringParam">Name of the querystring parameter</param>
/// <param name="tableName">SQL table name</param>
/// <param name="sqlParameterName">SQL parameter name (has to be exact since its used in query formation)</param>
/// <param name="typeOfParam">Indicates the Type of the parameter</param>
public void AddFilterParameterConfiguration(string queryStringParam, string tableName, string sqlParameterName, Type typeOfParam)
{
// Check if there is a filter parameter which has the same querystring, tablename and sqlparameter name.
if (0 == _filterParameters.Where(p =>
0 == String.Compare(p.QueryStringKey, queryStringParam, StringComparison.InvariantCultureIgnoreCase) &&
0 == String.Compare(p.TableName, tableName, StringComparison.InvariantCultureIgnoreCase) &&
0 == String.Compare(p.SqlParameterName, sqlParameterName, StringComparison.InvariantCultureIgnoreCase)
).Count())
{
_filterParameters.Add(new SqlSyncProviderFilterParameterInfo
{
QueryStringKey = queryStringParam.ToLowerInvariant(),
SqlParameterName = sqlParameterName,
TableName = tableName,
ValueType = typeOfParam
});
}
else
{
throw SyncServiceException.CreateInternalServerError(Strings.DuplicateFilterParameter);
}
}
internal Request(RequestCommand requestCommand,
HttpContextServiceHost serviceHost,
Dictionary <CommandParamType, object> commandParams,
byte[] blob,
List <IOfflineEntity> entities,
SyncSerializationFormat responseSerializationFormat)
{
IdToTempIdMapping = new Dictionary <string, string>();
RequestCommand = requestCommand;
ServiceHost = serviceHost;
CommandParams = commandParams;
SyncBlob = blob;
ResponseSerializationFormat = responseSerializationFormat;
if (null != entities && requestCommand != RequestCommand.UploadChanges)
{
throw SyncServiceException.CreateBadRequestError(Strings.EntitiesOnlyAllowedForUploadChangesRequest);
}
EntityList = entities;
}
/// <summary>Processes the diagnostics page request.</summary>
/// <returns>The response <see cref="Message"/>.</returns>
public Message ProcessRequestForDiagnostics()
{
try
{
// Intialize the service host.
_serviceHost = new HttpContextServiceHost();
// Ensure configuration.
CreateConfiguration();
Debug.Assert(_syncConfiguration != null, "_syncConfiguration != null");
// Check the EnableDiagPage property and invoke the callback if necessary.
// Return 404-Not Found if not enabled.
if (!_syncConfiguration.EnableDiagnosticPage || !OnBeginDiagnosticRequest())
{
throw SyncServiceException.CreateResourceNotFound();
}
// Perform diagnostic checks and prepare outgoing message.
_outgoingMessage = DiagHelper.CreateDiagResponseMessage(_syncConfiguration, _serviceHost);
}
catch (SyncServiceException syncServiceException)
{
ProcessSyncServiceException(syncServiceException);
}
catch (Exception exception)
{
if (WebUtil.IsFatalException(exception))
{
throw;
}
_outgoingMessage = CreateMessageFromUnhandledException(exception);
}
return(_outgoingMessage);
}
/// <summary>
/// Invokes the static InitializeService method that allows one-time service wide policy configuration.
/// </summary>
/// <param name="syncServiceType">service type (used for reflection).</param>
internal void Initialize(Type syncServiceType)
{
if (!IsInitialized)
{
lock (_lockObject)
{
if (!IsInitialized)
{
// Initialize the filter parameter list, to remove data from previously
// failed initialization attempt.
_filterParameters = new List <SqlSyncProviderFilterParameterInfo>();
// Invoke the static InitializeService method.
InvokeStaticInitialization(syncServiceType);
// Build Sync Operation Inspectors list
ReadSyncInterceptors(syncServiceType);
// Check for empty connection string.
if (String.IsNullOrEmpty(ServerConnectionString))
{
throw SyncServiceException.CreateInternalServerError(Strings.ConnectionStringNotSet);
}
// There are no dynamic scope changes allowed anyway, so why should the service start.
if (0 == ScopeNames.Count)
{
throw SyncServiceException.CreateInternalServerError(Strings.NoScopesVisible);
}
// We are initialized now.
IsInitialized = true;
}
}
}
}
/// <summary>Creates a new "Method Not Allowed" exception.</summary>
/// <param name="errorMessage">Plain text error message for this exception.</param>
/// <param name="allow">String value for 'Allow' header in response.</param>
/// <returns>A new SyncServiceException to indicate the requested method is not allowed on the response.</returns>
public static SyncServiceException CreateMethodNotAllowed(string errorMessage, string allow)
{
var exception = new SyncServiceException(ResponseHttpStatusCode.MethodNotAllowed, errorMessage) { _responseAllowHeader = allow };
return exception;
}
/// <summary>
/// Read and parse the incoming request stream for a POST request.
/// </summary>
private void ReadIncomingRequestStreamForPost()
{
if (null == _serviceHost.RequestStream || !_serviceHost.RequestStream.CanRead)
{
SyncTracer.Info("Request stream for HTTP POST is empty, null or cannot be read.");
return;
}
try
{
var reader = WebUtil.GetSyncReader(_serviceHost.GetRequestContentSerializationFormat(),
_serviceHost.RequestStream,
_configuration.TypeToTableGlobalNameMapping.Keys.ToArray());
reader.Start();
while (reader.Next())
{
switch (reader.ItemType)
{
case ReaderItemType.Entry:
IOfflineEntity entity = reader.GetItem();
if (entity.ServiceMetadata.IsTombstone)
{
if (String.IsNullOrEmpty(entity.ServiceMetadata.Id))
{
throw SyncServiceException.CreateBadRequestError(Strings.TombstoneEntityHasNoId);
}
WebUtil.ParseIdStringAndPopulateKeyFields(entity, _serviceHost.ServiceBaseUri);
}
_entityList.Add(entity);
bool hasTempId = false;
if (reader.HasTempId())
{
// Save the entity id to tempId mapping for use later when writing response.
_idToTempIdMapping.Add(WebUtil.GenerateOfflineEntityId(entity), reader.GetTempId());
hasTempId = true;
}
// Make sure, we have atleast one of Id or TempId
if (String.IsNullOrEmpty(entity.ServiceMetadata.Id) && !hasTempId)
{
throw SyncServiceException.CreateBadRequestError(Strings.BothIdAndTempIdAreMissing);
}
break;
case ReaderItemType.SyncBlob:
_syncBlob = reader.GetServerBlob();
break;
}
}
}
catch (XmlException exception)
{
SyncTracer.Warning("XmlException: {0}", WebUtil.GetExceptionMessage(exception));
throw SyncServiceException.CreateBadRequestError(Strings.BadRequestPayload);
}
}
/// <summary>
/// Reflect the types from T and cache it in a list for reference.
/// </summary>
private void DiscoverTypes(Type t)
{
TableGlobalNameToTypeMapping = new Dictionary <string, Type>();
TypeToTableGlobalNameMapping = new Dictionary <Type, string>();
TypeToTableLocalNameMapping = new Dictionary <Type, string>();
// We want to find the underlying type of every generic type which is a private instance member of the templated class
// and check if it has the [SyncEntityType] attribute applied to it. If this check passes, then
// extract the type and the attribute information and save it for future reference.
FieldInfo[] privateTypes = t.GetFields(BindingFlags.NonPublic | BindingFlags.Instance);
foreach (var privateType in privateTypes)
{
Type fieldType = privateType.FieldType;
if (fieldType.IsGenericType)
{
Type[] genericArguments = fieldType.GetGenericArguments();
if (null != genericArguments && 1 == genericArguments.Length)
{
var argument = genericArguments[0];
var attributes = argument.GetCustomAttributes(false);
object syncAttribute = null;
foreach (var attribute in attributes)
{
if (attribute.GetType() == typeof(SyncEntityTypeAttribute))
{
syncAttribute = attribute;
break;
}
}
if (null != syncAttribute)
{
// Read the TableGlobalName property value
PropertyInfo globalTablenamePropertyInfo = syncAttribute.GetType().GetProperty(SyncServiceConstants.SYNC_ENTITY_TYPE_TABLE_GLOBAL_NAME);
//Note: We cannot ToLower() this because the datatable name for sqlsyncprovider makes a case sensitive comparison.
string globalTableName = Convert.ToString(globalTablenamePropertyInfo.GetValue(syncAttribute, null));
if (TableGlobalNameToTypeMapping.ContainsKey(globalTableName))
{
throw new InvalidOperationException(String.Format(CultureInfo.InvariantCulture, Strings.DuplicateGlobalTableName, globalTableName));
}
if (String.IsNullOrEmpty(globalTableName))
{
throw new InvalidOperationException(Strings.TableGlobalNameCannotByEmpty);
}
TableGlobalNameToTypeMapping.Add(globalTableName, argument.UnderlyingSystemType);
TypeToTableGlobalNameMapping.Add(argument.UnderlyingSystemType, globalTableName);
// Read the TableLocalName property value
PropertyInfo localTablenamePropertyInfo = syncAttribute.GetType().GetProperty(SyncServiceConstants.SYNC_ENTITY_TYPE_TABLE_LOCAL_NAME);
string localTableName = Convert.ToString(localTablenamePropertyInfo.GetValue(syncAttribute, null));
if (String.IsNullOrEmpty(localTableName))
{
throw new InvalidOperationException(Strings.TableLocalNameCannotByEmpty);
}
TypeToTableLocalNameMapping.Add(argument.UnderlyingSystemType, localTableName);
}
}
}
}
if (0 == TableGlobalNameToTypeMapping.Count)
{
throw SyncServiceException.CreateInternalServerError(Strings.NoValidTypeFoundForSync);
}
}
/// <summary>
/// Parse the Id string and populate key fields of the object. This is called when the client sends tombstones
/// and the Key fields are not present in the input payload.
/// The approach used is to parse each key field individually and set it to a property with the same name.
/// For example: For http://host/service.svc/Tag(ID=1), we parse out ID=1 and then populate the ID property of the targetObject with the
/// value 1.
/// </summary>
/// <param name="entity">Entity for which we need to set the key fields.</param>
/// <param name="serviceBaseUri">
/// Base Uri of the service. The ServiceMetadata.Id property has the Uri which we want to strip off before attempting to
/// parse the keys and values.
/// </param>
internal static void ParseIdStringAndPopulateKeyFields(IOfflineEntity entity, Uri serviceBaseUri)
{
Debug.Assert(null != entity);
Debug.Assert(!String.IsNullOrEmpty(entity.ServiceMetadata.Id));
string idString = entity.ServiceMetadata.Id;
// Remove the ServiceUri and the entity type name from the EntityId
// Note: Case sensitive comparisons are made since the client isn't supposed to change the Id for an
// entity.
string serviceUriWithTableName = serviceBaseUri + "/" + entity.GetType().Name;
// If the Id does not have the correct format of serviceUri/TableName, then we should not continue further.
if (!idString.StartsWith(serviceUriWithTableName, false, CultureInfo.InvariantCulture))
{
throw SyncServiceException.CreateBadRequestError(String.Format(Strings.EntityIdFormatIsIncorrect, idString));
}
// Remove the host and the table name from the Id.
// Example: http://host/service.svc/table(id=123) will become (id=123)
idString = idString.Remove(0, serviceUriWithTableName.Length);
// Remove leading '/' if any. After this the id string is of the format (ID=1) or (ID=guid'<guidValue>')
// If there are multiple Id values then, they are comma separated.));))
if (idString.StartsWith("/"))
{
idString = idString.Substring(1);
}
// Make sure the ( and ) parenthesis exist.
if (String.IsNullOrEmpty(idString) || idString[0] != '(' || idString[idString.Length - 1] != ')')
{
throw SyncServiceException.CreateBadRequestError(String.Format(Strings.EntityIdFormatIsIncorrect, entity.ServiceMetadata.Id));
}
// Remove the ( and ) characters.
idString = idString.Substring(1, idString.Length - 2);
// Get the key properties for the entity.
var keyFieldPropertyInfoList = ReflectionUtility.GetPrimaryKeysPropertyInfoMapping(entity.GetType());
// Split the string and get individual keyvalue pair strings. They key and value are still a single string separated by '='.
// for types such as Guid, the value will be prefixed with 'guid'.
string[] primaryKeyValuePair = idString.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
// Throw if there is a mismatch between the key count of the entity and that passed in the URI.
if (primaryKeyValuePair.Length != keyFieldPropertyInfoList.Length)
{
throw SyncServiceException.CreateBadRequestError(String.Format(Strings.BadRequestKeyCountMismatch, entity.ServiceMetadata.Id, entity.GetType()));
}
// At this point, we have key value pairs of the form "ID=1".
foreach (var keyValuePair in primaryKeyValuePair)
{
// example: ID=1
string[] keyValue = keyValuePair.Split(new[] { '=' }, StringSplitOptions.RemoveEmptyEntries);
// Every key should have only 2 components.
Debug.Assert(2 == keyValue.Length);
// Get the property from the key list.
string key = keyValue[0].Trim();
var propertyInfo = keyFieldPropertyInfoList.Where(p => p.Name == key).FirstOrDefault();
if (null == propertyInfo)
{
throw SyncServiceException.CreateBadRequestError(
String.Format(Strings.BadRequestKeyNotFoundInResource, key, entity.ServiceMetadata.Id, entity.GetType()));
}
// Get typed value of the value.
object targetValue;
// Parse the value based on the target type.
if (!ODataIdParser.TryKeyStringToPrimitive(keyValue[1], propertyInfo.PropertyType, out targetValue))
{
throw SyncServiceException.CreateBadRequestError(
String.Format(Strings.UnableToParseKeyValueForProperty, keyValuePair, entity.ServiceMetadata.Id));
}
// Set the property value.
propertyInfo.SetValue(entity, targetValue, null);
}
}
// This method ensures that we have a valid feed through the formatters. The BodyWriter delegate in WCF
// seems to not recover from an unhandled exception caused by the formatters and sends out an empty response to the caller.
// This is a workaround for this issue until we find a better solution.
private SyncWriter GetSyncWriterWithContents()
{
var conflictEntryKeys = new List <string>();
var errorEntryKeys = new List <string>();
var primaryKeyToIncomingEntitiesMapping = new Dictionary <string, IOfflineEntity>();
// Save the mapping between entity PK string -> entity
foreach (var entity in _incomingEntities)
{
string primaryKey = ReflectionUtility.GetPrimaryKeyString(entity);
if (primaryKeyToIncomingEntitiesMapping.ContainsKey(primaryKey))
{
throw SyncServiceException.CreateInternalServerError(Strings.MultipleEntriesWithSamePrimaryKeyInIncomingRequest);
}
primaryKeyToIncomingEntitiesMapping.Add(primaryKey, entity);
}
if (_rejectedEntities != null)
{
foreach (var entity in _rejectedEntities.Keys)
{
string primaryKey = ReflectionUtility.GetPrimaryKeyString(entity);
if (primaryKeyToIncomingEntitiesMapping.ContainsKey(primaryKey))
{
throw SyncServiceException.CreateInternalServerError(Strings.MultipleEntriesWithSamePrimaryKeyInIncomingRequest);
}
primaryKeyToIncomingEntitiesMapping.Add(primaryKey, entity);
}
}
// Get the appropriate SyncWriter instance based on the serialization format.
var oDataWriter = WebUtil.GetSyncWriter(_responseSerializationFormat, _baseUri);
oDataWriter.StartFeed(_applyChangesResponse.IsLastBatch, _applyChangesResponse.ServerBlob);
// Write conflict entities.
foreach (var entity in _applyChangesResponse.Conflicts)
{
// Add the primary key string to the conflictEntryKey list.
// The primary keys are the same for both Live and Losing entities.
conflictEntryKeys.Add(ReflectionUtility.GetPrimaryKeyString(entity.LiveEntity));
string tempId;
// If the client change lost, then we need to set the Id property
// only if the property was not null/empty in the incoming request.
string entityId = WebUtil.GenerateOfflineEntityId(entity.LiveEntity);
// Set the Id property of the Live entity (server's copy).
entity.LiveEntity.ServiceMetadata.Id = entityId;
// Set the Id property of the Losing entity to the incoming entity's Id value
entity.LosingEntity.ServiceMetadata.Id = entityId;
// get the original tempId. Null value is ok.
_idToTempIdMapping.TryGetValue(entityId, out tempId);
if (entity.Resolution == SyncConflictResolution.ServerWins)
{
// The losing entity is the client's copy.
// When resolution is ServerWins, we only need to set the losing change tempId.
oDataWriter.AddConflictItem(entity.LiveEntity, null /*tempId*/, entity.LosingEntity, tempId, entity.Resolution);
}
// If the client change won, then just set the Id property since an insert would have succeeded.
else
{
// When resolution is ClientWins, we only need to set the LiveEntity tempId.
oDataWriter.AddConflictItem(entity.LiveEntity, tempId, entity.LosingEntity, null /* tempId */, entity.Resolution);
}
}
// Write error entities.
foreach (var syncError in _applyChangesResponse.Errors)
{
Debug.Assert(null != syncError.LiveEntity);
Debug.Assert(null != syncError.ErrorEntity);
string entityId = WebUtil.GenerateOfflineEntityId(syncError.LiveEntity);
// Set the Id for Live and Losing entity.
syncError.LiveEntity.ServiceMetadata.Id = entityId;
syncError.ErrorEntity.ServiceMetadata.Id = entityId;
string primaryKeyString = ReflectionUtility.GetPrimaryKeyString(syncError.ErrorEntity);
// Add the string to the error key list.
errorEntryKeys.Add(primaryKeyString);
string tempId;
_idToTempIdMapping.TryGetValue(entityId, out tempId);
oDataWriter.AddErrorItem(syncError.LiveEntity, syncError.ErrorEntity, tempId, syncError.Description);
}
// Write all the inserted records here by iterating over the _incomingNewInsertEntities list
foreach (var entity in _incomingNewInsertEntities)
{
string entityTempId;
// Get the tempId of the entity.
_idToTempIdMapping.TryGetValue(WebUtil.GenerateOfflineEntityId(entity), out entityTempId);
// Write the output to the SyncWriter.
oDataWriter.AddItem(entity, entityTempId);
}
return(oDataWriter);
}
/// <summary>
/// Get the serialization format for the response based on the value of the HTTP Accept header.
///
/// If $format is not specified then the format comes from the accept header.
///
/// The order in which a response content-type is chosen is based on the
/// incoming "Accept" header and the types that the service supports.
/// According to the HTTP/1.1 Header Field Definitions RFC
/// (http:///www.w3.org/Protocols/rfc2616/rfc2616-sec14.html), an absence of the
/// Accept header means that the client accepts all response types.
///
/// Media ranges can be overridden by more specific media ranges, for example:
/// both application/json and application/atom+xml would override */*.
///
/// Depending on the service configuration application/atom+xml would override application/json
/// if application/atom+xml if the default serialization format, and application/json would
/// override application/atom+xml if the default serialization format is application/json.
///
/// A client can also send a media range of the following type: application/*, which can be
/// substituted for application/atom+xml or application/json depending on the service configuration.
///
/// A. If the default configured serialization format is "application/atom+xml"
///
/// The formats in order of priority are:
/// 1. application/atom+xml
/// 2. application/json
/// 3. application/* or */* substituted with application/atom+xml
///
/// Examples (order of accept headers doesn't matter):
/// "application/*" -> ATOM+XML
/// "application/*,application/JSON" -> JSON
/// "application/*,application/ATOM+XML" -> ATOM+XML
/// "application/*,application/ATOM+XML,application/JSON" -> ATOM+XML
/// "application/JSON" -> JSON
/// "application/ATOM+XML" -> ATOM+XML
/// "application/JSON,application/ATOM+XML" -> ATOM+XML
///
/// B. If the default configured serialization format is "application/json"
///
/// The formats in order of priority are:
/// 1. application/json
/// 2. application/atom+xml
/// 3. application/* or */* substituted with application/json
///
/// Examples (order of accept headers doesn't matter):
/// "application/*" -> JSON
/// "application/*,application/JSON" -> JSON
/// "application/*,application/ATOM+XML" -> ATOM+XML
/// "application/*,application/ATOM+XML,application/JSON" -> JSON
/// "application/JSON" -> JSON
/// "application/ATOM+XML" -> ATOM+XML
/// "application/JSON,application/ATOM+XML" -> JSON
///
/// Note: headers from firefox need to be trimmed before we make a comparison.In other words the media range
/// parameter as specified in the above RFC are ignored.
/// </summary>
/// <returns>Response serialization format</returns>
internal SyncSerializationFormat GetOutputSerializationFormat(SyncSerializationFormat defaultSerializationFormat)
{
// Read $format from querystring first
string formatQueryString = QueryStringCollection[SYNC_FORMAT_QUERYKEY];
if (!String.IsNullOrEmpty(formatQueryString))
{
if (0 == String.Compare(formatQueryString.ToLowerInvariant(), "atom", StringComparison.InvariantCultureIgnoreCase))
{
return(SyncSerializationFormat.ODataAtom);
}
if (0 == String.Compare(formatQueryString.ToLowerInvariant(), "json", StringComparison.InvariantCultureIgnoreCase))
{
return(SyncSerializationFormat.ODataJson);
}
}
else if (!String.IsNullOrEmpty(RequestAccept))
{
var header =
RequestAccept.ToLowerInvariant().Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries).Select(h => h.Trim());
SyncSerializationFormat?outputSerializationFormat = null;
foreach (string headerString in header)
{
// Media range followed by optional semi-column and accept-params ,
string[] headerStringParts = headerString.Split(new[] { ';' }, StringSplitOptions.RemoveEmptyEntries);
if (0 == headerStringParts.Length)
{
continue;
}
// Is this header application/atom+xml
if (headerStringParts[0].Equals(CONTENT_TYPE_APPLICATION_ATOM, StringComparison.OrdinalIgnoreCase))
{
outputSerializationFormat = SyncSerializationFormat.ODataAtom;
}
// Is this header application/json
if (headerStringParts[0].Equals(CONTENT_TYPE_APPLICATION_JSON, StringComparison.OrdinalIgnoreCase))
{
outputSerializationFormat = SyncSerializationFormat.ODataJson;
}
// If the default header has been set explicitly then no need to read other headers
if (outputSerializationFormat == defaultSerializationFormat)
{
break;
}
// Is this header application/* or */*
if ((null == outputSerializationFormat) &&
(headerStringParts[0].Equals(CONTENT_TYPE_APPLICATION_ANY) || headerStringParts[0].Equals(CONTENT_TYPE_ANY)))
{
// Do not exit the loop as this can be overwritten by an explicit json or atnm+xml header
outputSerializationFormat = defaultSerializationFormat;
}
}
if (null == outputSerializationFormat)
{
throw SyncServiceException.CreateNotAcceptable(Strings.UnsupportedAcceptHeaderValue);
}
return(outputSerializationFormat.Value);
}
// return the default serialization format.
return(defaultSerializationFormat);
}
