I am trying to remove an alias mapping for an index in ES using jest.
Here is what I have tried :
// create Jest Client.
JestClient client = factory.getObject();
// create RemoveAliasMapping Object.
RemoveAliasMapping removeAliasMapping = new RemoveAliasMapping.Builder("oldIndex", "alias").build();
After creating the removeAliasMapping object, I couldn't find a way to execute it.
If I use the api : client.execute(removeAliasMapping), it says : The method execute(Action<T>) in the type JestClient is not applicable for the arguments (RemoveAliasMapping)
Also, I couldn't find any other api exposed to execute AliasMapping.
Can anyone help me out with this here? If possible, please put an example too.
Try this:
ModifyAliases modifyAliases = new ModifyAliases.Builder(new RemoveAliasMapping.Builder("oldIndex", "alias").build()).build();
JestResult result = client.execute(modifyAliases);
Related
I am updating a record on my mongoDb database.
The update is performed in a wrapper for a series of reason, it goes like:
Contact contact = generateContact();
UpdateResult updateResult = performUpdateOne("collection",new Document("field",fieldValue), new Document("$push", new Document("contacts", contact)),updateOptions);
Please keep in mind the new Document("$set", new Document("contacts", contact)) parameter because is the only mongoDb document that contains a reference to a Pojo, this field is used in the the method performUpdateOne
private UpdateResult performUpdateOne(String collectionName, Document filter, Document set, UpdateOptions updateOptions) {
...
...
LOG.debugf("Performing MongoDb UpdateOne command, collection[%s] query[%s] update[%s].", collectionName, filter.toJson(), set.toJson());
UpdateResult updateResult = collection.updateOne(filter, set, updateOptions);
The set.toJson() call gives me the exception:
Exception: : org.bson.codecs.configuration.CodecConfigurationException: Can't find a codec for class ...Contact. at org.bson.internal.CodecCache.lambda$getOrThrow$1(CodecCache.java:52)
If I comment the LOG:debugf line the collection.updateOne(filter, set, updateOptions) gives me no problem.
Why is the set document serialized correctly in the updateOne method while giving an error when i call .toJson() on it?
Thanks a lot
I am using mongo sync java driver 4.3.4
I'm using the Nest client to programmatically execute requests against an Elasticsearch index. I need to use the UpdateByQuery API to update existing data in my index. To improve performance on large data sets, the recommended approach is to use slicing. In my case I'd like to use the automatic slicing feature documented here.
I've tested this out in the Kibana dev console and it works beautifully. I'm struggling on how to set this property in code through the Nest client interface. here's a code snippet:
var request = new Nest.UpdateByQueryRequest(indexModel.Name);
request.Conflicts = Elasticsearch.Net.Conflicts.Proceed;
request.Query = filterQuery;
// TODO Need to set slices to auto but the current client doesn't allow it and the server
// rejects a value of 0
request.Slices = 0;
var elasticResult = await _elasticClient.UpdateByQueryAsync(request, cancellationToken);
The comments on that property indicate that it can be set to "auto", but it expects a long so that's not possible.
// Summary:
// The number of slices this task should be divided into. Defaults to 1, meaning
// the task isn't sliced into subtasks. Can be set to `auto`.
public long? Slices { get; set; }
Setting to 0 just throws an error on the server. Has anyone else tried doing this? Is there some other way to configure this behavior? Other APIs seem to have the same problem, like ReindexOnServerAsync.
This was a bug in the spec and an unfortunate consequence of generating this part of the client from the spec.
The spec has been fixed and the change will be reflected in a future version of the client. For now though, it can be set with the following
var request = new Nest.UpdateByQueryRequest(indexModel.Name);
request.Conflicts = Elasticsearch.Net.Conflicts.Proceed;
request.Query = filterQuery;
((IRequest)request).RequestParameters.SetQueryString("slices", "auto");
var elasticResult = await _elasticClient.UpdateByQueryAsync(request, cancellationToken);
How can I add new trigger for existing AWS Lambda function using Java API?
I would like to add CloudWatch Events - Schedule trigger.
It looks like I should use AmazonCloudWatchEventsClient.
How can I set the credentials for the client?
Any examples will be appreciated.
Thanks.
It is possible to add event sources via aws sdk. I faced the same issue and please see code below as the solution using java.
AddPermissionRequest addPermissionRequest = new AddPermissionRequest();
addPermissionRequest.setStatementId("12345ff"); //any unique string would go
addPermissionRequest.withSourceArn(ruleArn); //CloudWatch rule's arn
addPermissionRequest.setAction("lambda:InvokeFunction");
addPermissionRequest.setPrincipal("events.amazonaws.com");
addPermissionRequest.setFunctionName("name of your lambda function");
AWSLambdaAsyncClient lambdaClient = new AWSLambdaAsyncClient();
lambdaClient.withRegion(Regions.US_EAST_1); //region of your lambda's location
lambdaClient.addPermission(addPermissionRequest);
Thanks needed it in Kotlin myself, the thing missing from the previous answer was the dependency:
compile 'com.amazonaws:aws-java-sdk-lambda:1.11.520'
code:
val addPermissionRequest = AddPermissionRequest()
addPermissionRequest.statementId = "12345ff" //any unique string would go
addPermissionRequest.withSourceArn(ruleArn) //CloudWatch rule's arn
addPermissionRequest.action = "lambda:InvokeFunction"
addPermissionRequest.principal = "events.amazonaws.com"
addPermissionRequest.functionName = "name of your lambda function"
val lambdaClient = AWSLambdaAsyncClient.builder().build()
lambdaClient.addPermission(addPermissionRequest)
is there a way I can create ISearchResponse to simulate return by elastic search from JSON string? I need to write unittests for my API. The API building the query has histogram, date filters etc and hence response will be as per that and I want to simulate that.
Thanks
You can deserialize json into an instance of ISearchResponse<T> with
ISearchResponse<T> searchResponse = null;
using (var stream = File.OpenRead("path-to-json.json"))
{
searchResponse = client.Serializer.Deserialize<SearchResponse<T>>(stream);
}
If this is stub data, I'd be more inclined to have a stub implementation of ISearchResponse<T> in code as opposed to deserializing json to create an instance; maybe a little easier to maintain.
I'm doing a small research about a client for elastic search in .net and I found that NEST is one of the most supported solutions for this matter.
I was looking at Nest's docummentation and I couldn´t find a way to output a raw json from a query and avoid the serialization into an object, because I'm using angularJs in the front end I don´t want to overload the process of sending the information to the client with some unnecessary steps.
......and also I'd like to know how can I overrdide the serialization process?
I found that NEST uses Json.NET which I would like to change for the servicestack json serielizer.
thanks!
Hi Pedro you can do this with NEST
var searchDescriptor = new SearchDescriptor<ElasticSearchProject>()
.Query(q=>q.MatchAll());
var request = this._client.Serializer.Serialize(searchDescriptor);
ConnectionStatus result = this._client.Raw.SearchPost(request);
Assert.NotNull(result);
Assert.True(result.Success);
Assert.IsNotEmpty(result.Result);
This allows you to strongly type your queries, but return the string .Result which is the raw response from elasticsearch as string to your
request can be an object or the string so if you are OK with the internal json serialize just pass searchDescriptor directly
Use RequestResponseSerializer instead of Serializer.
var searchDescriptor = ...;
...
byte[] b = new byte[60000];
using (MemoryStream ms = new MemoryStream(b))
{
this._client.RequestResponseSerializer.Serialize(searchDescriptor , ms);
}
var rawJson = System.Text.Encoding.Default.GetString(b);