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[New blog post for developers] Documenting Your Event Driven Architecture in 5 Steps
As organizations look to adopt an event-driven architecture, they might find difficulty in documenting the design process, understanding how changes might impact services, and how to verify that the runtime matches the intended design. In this blog post, Leah Robert looks at the step-by-step process on how to document your…
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Disable session timeout on CLI & PubSub+ Manager
Hi Solace Community, For obvious security reason the session timeout for the CLI & PubSub+ Manager is set to 5 minutes for CLI & 15 min for Manager. And this can be annoying to have to reconnect all the time on non production environment or if you have a lot to do in production, for a "go live" for example. CLI Session…
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Issue subscribing durable queue to topic
Hello We are using Spring Cloud Stream solace binder to connect to Solace. We are facing an issue when durable queues subscribe to topic. Case 1: When the application is creating the queue we are not facing any issue. The durable queue gets subscribed to the topic and is able to consume message successfully. Case 2: When…
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[New blog post for developers] Solace PubSub+ vs Kafka: Multi-Site Architecture
This blog post compares how Apache Kafka and Solace PubSub+ each enable event streaming across multi-site systems. The blog post answers the following questions: * Why is Multi-Site Architecture Important? * How Does Kafka Enable Multi-Site Architecture? * How Does Solace Enable Multi-Site Architecture? Read the full blog…
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Limitation on UserPropertyMap of Solace Message Format
Is there any limitation for UserPropertyMap of a solace message (SMF) ?? ==> Size ?? number of bytes ?? Or as long as the whole message <64Mb (Direct) / <32Mb (Gurantee), it is still okay ??
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Solace with multi threading environment
How to use Solace in a multithreading environment, similar to kafka consumers with multiple partitions.
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Debugging replay log issues
I am trying to debug replay in Solace. I see the messages in the internal replay queues, but when I tried replay on a new queue with subscriptions to the same topic, messages are not being processed. The queue is showing "Replay State" of "Active", but nothing is being replayed. Even the live feed is not going to the new…
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Increase Single Message Maximum Size Limit of Direct Messages in localhost
Hello everyone, I am using the Solace localhost (PubSub+ standard edition) The current maximum single message size limit for direct messages is 10GB. I need a limit of at least 30GB and above for Direct messages in the localhost. Is there any way to increase this limit? Thanks in advance!
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Python TLS/ClientCertificateAuthentication error
Hi All, I am trying to use Python to connect to solace and failing to connect with “unable to get local issuer certificate” error. I have setup TLS with_certificate_validation and authentication strategy with ClientCertificateAuthentication.of. I have tried various combinations to use with or without TLS, while creating…
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"Guaranteed Message Publish Window Size" with (Solace) JMS
Hi there In one of our applications we use the com.solacesystems.sol-jms (version 10.6.4). I want to configure publishing as described in https://solace.com/blog/understanding-guaranteed-message-publish-window-sizes-and-acknowledgement/ I found this:…
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[Weekly Quizzicles] When Message Replay is enabled, what can you request?
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Applying backpressure to a flow by blocking in the MessageEventHandler
I have a few days of free time and so I am developing a new branch of my Solace subscriber wrapper library. I thought I'd play with exposing the message stream as an IAsyncEnumerable. I decided to use a System.Threading.Channels.Channel with a bounded capacity for this. The idea is to (usually) quickly let the message…
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OPC-UA
Hi there Solace Community, My next device that will try to use has OPC-UA, but from what I read until now about this topic, the only way to connect to this to the broker will be through MQTT PubSub. Is there or do You know if it will in a future, a way to connect directly a device that uses the OPC-UA to the Solace Broker,…
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Try-Me seems to send message as byte[] array and not text
Hi, Using the the try-me functionality of the Solace Cloud Console to publish a message. The problem is that it seems to sends the message as byte array while my consumer code expects it to be a string. I don't want to change the consumer code but rather instruct Try-Me to send message as text and receive it as is. Is it…
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Client username (sender id?)
Is there a way to get username of a sender of a message? As a consumer I want to know the name used to authenticate (basic or gss auth scheme) sender session. Obviously I dont want sender application to attach this as client can't be trusted so maybe VPN can attach this? I need this ID for further-more granular application…
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Solace & Dapr
Has anyone integrated Solace with DAPR? (dapr.io) MQTT is supported, so should be possible : https://docs.dapr.io/reference/components-reference/supported-pubsub/ Interested to hear if anyone has tested it.
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Python - Additional properties for with_missing_resources_creation_strategy()
Hi, As a python subscriber to an external broker, we are only limited to create Durable Exclusive queue via SMF Api. Since there's an existing method prior to starting the receiver, with_missing_resources_creation_strategy(), by default its endpoint created on a permission for that queue is Delete. However, it is required…
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Using Selectors in Solace PHP SMF
Hello all, is there a way to use Message selectors in the PHP SMF library similar to the other Solace interfaces ( https://tutorials.solace.dev/jcsmp/message-selectors/ ) ? If not, do you have any other idea how we can easily receive messages via PHP using message selectors? Thanks a lot and best regards from Mannheim,…
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Working Principle For Solace Loopback Bridge
Hi, I have question around Solace loopback Message VPN Bridge which is used for link two Message VPNs on same event broker. Let's say we have Appliance Name “Router_DC_1” and there are 2 VPN i.e. VPN_A & VPN_C, Now both VPN is linked together via bridge (VPN_A_to_VPN_C) on same appliance. There is DR for this setup on…
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Gaps and direct vs guaranteed messaging
Assume I disabled reconnect on Solace session - so once the session is down it will stay down. Now I have a publisher which is publishing messages A, B, C (in order and all messages have the same priority). (1) Suppose the publisher is publishing to topic T and uses direct messaging. Can it happen that only messages A and…
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Need help on SOLCLIENT_SUBCODE_COMMUNICATION_ERROR
Hi, I am encountering an error when trying to establish a connection to the broker. I'm using TLS with certificate in the transport security strategy. Here is my code: transport_security = TLS.create() \ .with_certificate_validation(True, validate_server_name=True, trust_store_file_path=trust_store_path)messaging_service =…
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XMLMessageProducer - java.io.NotSerializableException
Hi I am new to Solace. I have been trying to use Solace with Spark cluster with DStream. My sample code for producer looks like this private XMLMessageProducer managerProducer; // In my init method, I am creating the instance of managerProducer like shown below managerProducer = session.getMessageProducer(new…
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Basic Configuration Defaults
Hey, What are basic Configuration Defaults required for software event broker?? Read good stuff here, https://docs.solace.com/Solace-SW-Broker-Set-Up/Starting-SW-Brokers-for-the-First-Time/Set-Up-KVM.htm#VMR. Can you brief more on it??
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How to get SDTMap properties in Spring Cloud Stream
We are using SDTMap to set custom application properties in one service which produce message..which uses normal springboot service. We access solace message api and create SDTMap. In Consumer we use spring cloud stream to receive and process. How to get SDTMap properties in Spring Cloud Stream?
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[Weekly Quizzicles] What level of logs are the logs from over-the-message-bus?
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Not able to access any of those solace specific headers,
@StreamListener("solace-test") public void onMessage(Message<String> message){ Destination destination = message.getHeaders().get(SolaceHeaders.DESTINATION, Destination.class); System.out.println("DESTINATION :: " + destination.getName()); System.out.println("MESSAGE " + message.getPayload());…
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Python - publish and subscribe message with message in the Content and not in the Attachment
In our current use case we will be expecting published messages to be stored in the Attachment or in Content from our external broker. Our python subscriber currently can read published messages via get_payload_as_string() or get_payload_as_bytes().decode("utf-8"). 1. How can we publish a message via python and stored as a…
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Transactional applications in event driven approach
I understand the benefits of event driven approach which is like decoupling the applications and making the integration seamless with more reliability but there is a bit of delay in as well with event driven more on the side for the call backs and so in case of an ecommerce application which has payment transaction…
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How to set ssl validate certificate to false in python
I am Implementing Solace pubsub solution in python and trying to disable ssl_validate_vertificate . It is working fine in Java but not how to set same in python I tried this way: "solace.messaging.ssl_validate_certificate":False"solace.messaging.ssl_validate_certificate_date":False But it's not working. getting error…
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OAuth2 Missing or invalid "expires_in" error with Azure Event Hubs connector
Hi everyone. I'm pretty new to Solace and I've been trying to setup the Azure Event Hubs connector. We are running Standard edition in a docker container. After following the wizard to configure the connector I'm getting an error back for the OAuth 2.0 Client Credentials Authentication; Last Failure Reason: Missing or…
