public static TryCatch <ChangeFeedContinuationToken> MonadicConvertFromCosmosElement(CosmosElement cosmosElement)
{
if (cosmosElement == null)
{
throw new ArgumentNullException(nameof(cosmosElement));
}
if (!(cosmosElement is CosmosObject cosmosObject))
{
return(TryCatch <ChangeFeedContinuationToken> .FromException(
new FormatException(
$"Expected object for ChangeFeed Continuation: {cosmosElement}.")));
}
if (!cosmosObject.TryGetValue(PropertyNames.FeedRange, out CosmosElement feedRangeCosmosElement))
{
return(TryCatch <ChangeFeedContinuationToken> .FromException(
new FormatException(
$"Expected '{PropertyNames.FeedRange}' for '{nameof(ChangeFeedContinuationToken)}': {cosmosElement}.")));
}
if (!cosmosObject.TryGetValue(PropertyNames.State, out CosmosElement stateCosmosElement))
{
return(TryCatch <ChangeFeedContinuationToken> .FromException(
new FormatException(
$"Expected '{PropertyNames.State}' for '{nameof(ChangeFeedContinuationToken)}': {cosmosElement}.")));
}
TryCatch <FeedRangeInternal> monadicFeedRange = FeedRangeCosmosElementSerializer.MonadicCreateFromCosmosElement(feedRangeCosmosElement);
if (monadicFeedRange.Failed)
{
return(TryCatch <ChangeFeedContinuationToken> .FromException(
new FormatException(
$"Failed to parse '{PropertyNames.FeedRange}' for '{nameof(ChangeFeedContinuationToken)}': {cosmosElement}.",
innerException : monadicFeedRange.Exception)));
}
TryCatch <ChangeFeedState> monadicChangeFeedState = ChangeFeedStateCosmosElementSerializer.MonadicFromCosmosElement(stateCosmosElement);
if (monadicChangeFeedState.Failed)
{
return(TryCatch <ChangeFeedContinuationToken> .FromException(
new FormatException(
$"Failed to parse '{PropertyNames.State}' for '{nameof(ChangeFeedContinuationToken)}': {cosmosElement}.",
innerException : monadicChangeFeedState.Exception)));
}
return(TryCatch <ChangeFeedContinuationToken> .FromResult(
new ChangeFeedContinuationToken(
monadicFeedRange.Result,
monadicChangeFeedState.Result)));
}
public static CosmosElement ToCosmosElement(ChangeFeedContinuationToken changeFeedContinuationToken)
{
return(CosmosObject.Create(new Dictionary <string, CosmosElement>()
{
{
PropertyNames.FeedRange,
FeedRangeCosmosElementSerializer.ToCosmosElement(changeFeedContinuationToken.Range)
},
{
PropertyNames.State,
ChangeFeedStateCosmosElementSerializer.ToCosmosElement(changeFeedContinuationToken.State)
}
}));
}
public static CosmosElement ToCosmosElement(FeedRangeState <ChangeFeedState> feedRangeState)
{
return(CosmosObject.Create(new Dictionary <string, CosmosElement>()
{
{
PropertyNames.FeedRange,
FeedRangeCosmosElementSerializer.ToCosmosElement(feedRangeState.FeedRange)
},
{
PropertyNames.State,
ChangeFeedStateCosmosElementSerializer.ToCosmosElement(feedRangeState.State)
}
}));
}
