activemq-artemis | Mirror of Apache ActiveMQ Artemis | Pub Sub library
kandi X-RAY | activemq-artemis Summary
kandi X-RAY | activemq-artemis Summary
This file describes some minimum 'stuff one needs to know' to get started coding in this project.
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Top functions reviewed by kandi - BETA
- Load a message file .
- Handle a packet .
- Called when a notification is received .
- Parse address settings .
- Deliver a message .
- Parses the next command .
- Convert ICore message to ActiveMQ message .
- Prints the survivors records .
- Try to reconnect to the given connection .
- Compacts the journal .
activemq-artemis Key Features
activemq-artemis Examples and Code Snippets
License : Strong Copyleft (CC BY-SA 4.0)
Copyimport { browser } from "$app/env"
export const quickAccessMenu : quickAccessMenu[] = browser && [
...
];
{#each quickAccessMenu as menu, i }
def sell(request):
category = Category.objects.all()
context = {'category': category}
if request.POST:
product_name = request.POST.get('product_name')
up_category = request.POST.get('up_category')
keyworcd /path/to/existing/local/repository
git remote set-url origin https://github.com/MyAccount/MyNewRepo
git push
private class RecyclerViewImpl extends RecyclerView {
RecyclerViewImpl(@NonNull Context context) {
super(context);
}
private void initialize(Context context, AttributeSet attrs) {
Calendar dateCalender = Calendar.getInstance();
final int year = dateCalender.get(Calendar.YEAR);
final int month = dateCalender.get(Calendar.MONTH);
final int day = dateCalender.get(Calendar.DAY_OF_MONTH);
Local@SpringBootApplication
public class BatchProcessingApplication {
public static void main(String[] args) throws Exception {
new Scanner(System.in).nextLine();
ApplicationContext context = SpringApplication.run(BatchProcetable_name = "so71884564"
if crsr.tables(table_name).fetchone(): # does table exist?
crsr.execute(f"DROP TABLE {table_name}")
crsr.execute(f"CREATE TABLE {table_name} (id COUNTER PRIMARY KEY, txt TEXT(50))")
# insert arbitrary id
cr
4.0.0
com.example
mongodb-javafx-demo
1.0-SNAPSHOT
mongo
UTF-8
18
org.openjfx
javafx-controls
${javafx.version}
function submitData(obj) {
//specify what sheet IDs you want to search
var sheetNames = ['foo', 'bar', 'bla']
//create an array to push results to
var inject = []
for (var i = 0; i < sheetNames.length; i++) {
var sheetNapipeline {
environment {
COMPONENT = 'listener-publisher-service'
REGISTRY_PATH = 'com.csg.ops.it.prf'
REGISTRY = 'docker-dev.odyssey.rowini.net'
}
options {
disableConcurrentBuilds()
tiCommunity Discussions
Trending Discussions on activemq-artemis
QUESTION
I have a master slave setup with 1 master and 2 slaves. When I kill the master, one of the slave tries to become master but fails with following exception:
...ANSWER
Answered 2022-Mar-08 at 21:01I recommend you upgrade to the latest release and retry.
Also, I recommend simplifying your configuration to use just a single live/backup pair. The broker will only ever replicate data to one other broker. The second backup will be completely idle until either the master or current backup fails.
Lastly, using a single live/backup pair with the replication ha-policy is very dangerous due to the possibility of split-brain. I strongly recommend that you use shared-storage or once you move to the latest release you configure pluggable quorum voting with ZooKeeper to mitigate the risk of split-brain.
QUESTION
In my testing and review of the Artemis LastValueQueue code, it looks like the scheduling delay for a message takes precedence over its evaluation of the "last-value-key". In other words, if you schedule a message, it is only evaluated for replacing the last-value in the queue at the time it is prepared for delivery.
My question is whether I have correctly understood the code, and if so, if there's a workaround or a feature of ActiveMQ / Artemis that might help meet our requirements.
Our requirements are as follows:
- Generate a message, and delay processing of that message to a point in the future (usually 30 seconds out).
- If an updated version of the message is generated due to a new external event, replace any existing scheduled message with the new version of the message - the scheduled delivery time should also be updated, in addition to the message payload.
Some other notes:
- My current prototype is using Artemis embedded server
- Spring-jms JmsTemplate is being used to produce messages
- Spring-jms JmsListenerContainerFactory is being used to consume messages
- We don't currently use SpringBoot, so you'll see some bean setup below.
ArtemisConfig.java:
...ANSWER
Answered 2022-Feb-09 at 16:02Your understanding about the semantics of scheduled messages with a last-value queue is correct. When a message is scheduled it is not technically on the queue yet. It is not put onto the queue until the scheduled time arrives at which point last-value queue semantics are enforced.
Short of implementing a new feature I don't see how you can implement your desired behavior in any kind of automatic way. My recommendation at this point would be to use the management API (i.e. QueueControl) to manually remove the "old" scheduled message before you send the "new" scheduled message. You can use one of the removeMessage methods for this as they will work on scheduled messages and non-scheduled messages alike.
QUESTION
How can I retrieve the list of configured acceptors in ActiveMQ Artemis via Jolokia/JMX (and curl)? I need to reload the acceptors after a TLS certificate update but looks like passing the acceptor name is mandatory. Unfortunately, I cannot just pass a static name because we use different acceptors, all using TLS – and don’t want to change the reloading code just because the acceptor config changed.
...ANSWER
Answered 2021-Dec-06 at 18:05There is a getConnectors method on the main ActiveMQServerControl MBean which is why Jolokia's read command returns those values. However, there is no corresponding getAcceptors method, but you can use Jolokia's list command to effectively get the same information. Use something like this:
QUESTION
I have no idea what I did wrong. I'm trying to make right configuration of ActiveMQ Artemis HA cluster on 2 docker containers, but I don't see in logs anything about "backup server" and so on. It seems to not work. I tried to make a simple Java client for the cluster, but it doesn't connect to it. Please don't write "have you read a documentation" - because yes, I've read it. From my perspective it seems like there is no connection between master and slave, but I don't know why. I've configured docker environment with data:
Dockerfile:
...ANSWER
Answered 2021-Oct-12 at 10:25The netty-acceptor acceptor must use the container IP address to allow external connections, i.e. the master acceptor should be:
QUESTION
And so, I have some missing messages from Apache Active MQ Artemis (for more information my previous question is located here Apache ActiveMQ Artemis how to investigate if messages were lost?).
After reviewing journal records I see these entries related to the lost message (recordID=1094612593). What can I deduce from these entries. And can they be helpful in further troubleshooting?
...ANSWER
Answered 2021-Sep-26 at 01:26The data here is inconclusive as the records don't directly relate to one another. Let's look at each record one by one...
QUESTION
We have 6 AMQ instances (3 masters + 3 slaves) in clustering mode, each in a different machine. Each instance has let's say queue/ExampleQueue. We would like to achieve load-balancing as we have massive messages to be sent to queue/ExampleQueue.
This example uses ConnectionFactory only from one node.
In Spring we utilize the ConnectionFactory by configuring all 6 Node-ConnectionFactory-URLs:
ANSWER
Answered 2021-Sep-08 at 03:05Listing multiple brokers in the same URL is mainly useful when making the initial connection. Each broker in the list will be tried until a connection is successfully established. Then as soon as the client connects to any node in the cluster it will receive the topology of the entire cluster and any additional connections made with that same ConnectionFactory instance will be distributed across the cluster in a round-robin fashion based on the received topology.
The down side of just listing one broker in the URL is that if that one broker is down the client won't connect to anything at all.
QUESTION
I would like to config the max-delivery-attempts of dead letter as described in the manual.
I tried Spring Boot with embedded ActiveMQ Artemis JMS server, but cannot figure out how to set max-delivery-attempts value.
ANSWER
Answered 2021-Aug-31 at 17:36After debugging the Configuration instance I finally find the method. Here's the code:
QUESTION
I am having a listener problem with ActiveMQ Artemis 2.17.0 while using Spring boot 2.0.3.RELEASE. I used Spring Boot Artemis dependency to send messages to multiple queues via:
...ANSWER
Answered 2021-Aug-03 at 16:12I believe you are seeing the expected behavior. This is because the feature you're using is a wildcard address. In short, any messages sent to a matching address will also be routed to the wildcard address (and any queues bound to that address according to their semantics (i.e. anycast or multicast)).
However, I believe the wildcard address hasn't yet been created when you send your messages (since you haven't created your consumer yet) so there is no way for those messages to be routed to it.
FWIW, you can see this feature in action in the topic-hierarchies examples which ships with the broker in the examples/features/standard directory.
QUESTION
I have a application in which I want to have 1 durable and 1 non-durable queue in Active MQ Artemis. For connecting to this message bus I use amqpnetlite.
...ANSWER
Answered 2021-Jun-18 at 15:50The Artemis source carries an example in .NET that creates a durable topic subscription and also shows how to later recover it using AmqpNetLite.
One key thing many folks miss is that your client needs to use a unique container ID analogous to the JMS Client ID concept.
For Queue specific subscriptions the client should indicate in the link capabilities that it wants a Queue based address created as the default is a multicast Queue which won't behave the same.
QUESTION
I am trying to perform a unit test where I need my mock object to perform an action AFTER a sequence of EXPECT_CALLS, or as an action on one of them while allowing the mocked call to return first.
Here is my non working unit test:
...ANSWER
Answered 2021-Jun-05 at 19:21A socket typically behaves asynchronously (i.e., signals are emitted at some indeterminate time after calling methods), but you are setting up the mock object such that it behaves synchronously (signals are emitted immediately as a result of calling the method). You should be attempting to simulate asynchronous behavior.
Typically, you would achieve this behavior by calling the signal manually (and not as part of an invoke clause):
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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Install activemq-artemis
You can use activemq-artemis like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the activemq-artemis component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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