/// <inheritdoc />
public async Task <MultiResponse> CopyIndexAsync <T>(ISearchIndex sourceIndex, ISearchIndex destinationIndex,
RequestOptions requestOptions = null, CancellationToken ct = default) where T : class
{
if (sourceIndex.Config.AppId.Equals(destinationIndex.Config.AppId))
{
throw new AlgoliaException("Source and Destination indices should not be on the same application.");
}
// TODO: improve this section
try
{
IndexSettings destinationSettings =
await destinationIndex.GetSettingsAsync(ct : ct).ConfigureAwait(false);
if (destinationSettings != null)
{
throw new AlgoliaException(
"Destination index already exists. Please delete it before copying index across applications.");
}
}
catch (AlgoliaApiException ex)
{
// We want to catch an non existing index exception (404) and continue
// Otherwise, we want to throw if it's another Http exception
if (ex.HttpErrorCode != 404)
{
throw;
}
}
MultiResponse ret = new MultiResponse {
Responses = new List <IAlgoliaWaitableResponse>()
};
// Save settings
IndexSettings sourceSettings = await sourceIndex.GetSettingsAsync(ct : ct).ConfigureAwait(false);
SetSettingsResponse destinationSettingsResp = await destinationIndex
.SetSettingsAsync(sourceSettings, requestOptions, ct)
.ConfigureAwait(false);
ret.Responses.Add(destinationSettingsResp);
// Save synonyms
SynonymsIterator sourceSynonyms = new SynonymsIterator(sourceIndex);
SaveSynonymResponse destinationSynonymResponse = await destinationIndex
.SaveSynonymsAsync(sourceSynonyms, requestOptions : requestOptions, ct : ct)
.ConfigureAwait(false);
ret.Responses.Add(destinationSynonymResponse);
// Save rules
RulesIterator sourceRules = new RulesIterator(sourceIndex);
BatchResponse destinationRuleResponse = await destinationIndex
.SaveRulesAsync(sourceRules, requestOptions : requestOptions, ct : ct)
.ConfigureAwait(false);
ret.Responses.Add(destinationRuleResponse);
// Save objects (batched)
IndexIterator <T> indexIterator = sourceIndex.Browse <T>(new BrowseIndexQuery());
BatchIndexingResponse saveObject = await destinationIndex
.SaveObjectsAsync(indexIterator, requestOptions, ct)
.ConfigureAwait(false);
ret.Responses.Add(saveObject);
return(ret);
}