heartbeat | Health monitoring of HTTP services and databases | REST library

 by   likeastore JavaScript Version: Current License: No License

kandi X-RAY | heartbeat Summary

kandi X-RAY | heartbeat Summary

heartbeat is a JavaScript library typically used in Web Services, REST, MongoDB, Spring Boot applications. heartbeat has no bugs and it has low support. However heartbeat has 3 vulnerabilities. You can download it from GitHub.

Health monitoring of HTTP services and databases.
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            kandi-support Support

              heartbeat has a low active ecosystem.
              It has 108 star(s) with 20 fork(s). There are 10 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 2 open issues and 0 have been closed. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of heartbeat is current.

            kandi-Quality Quality

              heartbeat has 0 bugs and 0 code smells.

            kandi-Security Security

              heartbeat has 3 vulnerability issues reported (0 critical, 1 high, 1 medium, 1 low).
              heartbeat code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              heartbeat does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
              OutlinedDot
              Without a license, all rights are reserved, and you cannot use the library in your applications.

            kandi-Reuse Reuse

              heartbeat releases are not available. You will need to build from source code and install.
              Installation instructions are not available. Examples and code snippets are available.

            Top functions reviewed by kandi - BETA

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            Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of heartbeat
            Get all kandi verified functions for this library.

            heartbeat Key Features

            No Key Features are available at this moment for heartbeat.

            heartbeat Examples and Code Snippets

            Start a new heartbeat thread .
            pythondot img1Lines of Code : 78dot img1License : Non-SPDX (Apache License 2.0)
            copy iconCopy
            def start(period: int) -> threading.Event:
              """Starts a persistent thread exchanging heartbeats between workers.
            
              Args:
                period: Heartbeat interval in seconds. Heartbeat timeout is set to the
                  larger of `period` - 10 and 2s.
            
              Returns:  
            Start the heartbeat thread .
            pythondot img2Lines of Code : 55dot img2License : Non-SPDX (Apache License 2.0)
            copy iconCopy
            def _heartbeat(
                period: int,  # in seconds
                timer: threading.Event,
                token: int,
                num_tasks: int,
                task_id: int,
                device: tf_device.DeviceSpec,
            ):
              """Periodically sends and receives a heartbeat signal."""
              logging.info('Starting  
            Handle heartbeat message .
            javadot img3Lines of Code : 21dot img3License : Non-SPDX
            copy iconCopy
            @Override
              protected void handleHeartbeatInvokeMessage() {
                try {
                  boolean isLeaderAlive = messageManager.sendHeartbeatMessage(leaderId);
                  if (isLeaderAlive) {
                    LOGGER.info(INSTANCE + localId + "- Leader is alive.");
                    Thre  

            Community Discussions

            QUESTION

            Spring Boot application reads same messages from Kafka whenever started
            Asked 2021-Jun-11 at 16:12

            I have Zookeeper and Apache Kafka servers running on my Windows computer. The problem is with a Spring Boot application: it reads the same messages from Kafka whenever I start it. It means the offset is not being saved. How do I fix it?

            Versions are: kafka_2.12-2.4.0, Spring Boot 2.5.0.

            In Kafka listener bean, I have

            ...

            ANSWER

            Answered 2021-Jun-10 at 15:19

            Your issue is here enable.auto.commit = false. If you are not manually committing offset after consuming messages, You should configure this to true

            If this is set to false, after consuming messages from Kafka, there is no feedback to Kafka whether you read or not. Then after you restart your consumer it will send messages from the start. If you enable this, your consumer make sure it will automatically send your last read offset to Kafka. Then Kafka saved that offset in __consumer_offsets topic with your consumer group_id, topic you consumed and partition.

            Then after you restart the consumer, Kafka read your last position from __consumer_offsets topic and send from there.

            Source https://stackoverflow.com/questions/67921796

            QUESTION

            How to properly handle with AMQP connections to and api with multiple producers
            Asked 2021-Jun-11 at 07:52

            I'm developing an api that communicates with other services from an event architecture using RabbitMQ Topics. Several routes from my API will publish events and I would like to have a single live connection at all times in my API. That way, at every new request I just create a new channel, and keep only one connection (I decided to do this after reading about how expensive an amqp 0-9-2 connection is).

            For now I have something like this:

            ...

            ANSWER

            Answered 2021-Jun-11 at 07:52

            form the official pika documentation

            Is Pika thread safe?

            Pika does not have any notion of threading in the code. If you want to use Pika with threading, make sure you have a Pika connection per thread, created in that thread. It is not safe to share one Pika connection across threads, with one exception: you may call the connection method add_callback_threadsafe from another thread to schedule a callback within an active pika connection.

            so your solution can work with a single thread

            Source https://stackoverflow.com/questions/67909244

            QUESTION

            How can i get a SQL query only one per day?
            Asked 2021-Jun-09 at 12:17

            I have a database of phone communcations which send their location every 30s to 1m, i need to get a sumarry of their location history. as i have their communication every 30s, for only 3 days i have more than 500 results. how can i query to get only 1 result per day based on a hour?

            ...

            ANSWER

            Answered 2021-Jun-09 at 12:15

            If you want one result per day, then use DISTINCT ON. Assuming the "day" is based on datetime:

            Source https://stackoverflow.com/questions/67903925

            QUESTION

            Symfony RabbitMQ Bundle in AWS (managed service): Any way to get this working?
            Asked 2021-Jun-09 at 09:33

            We really tried a lot but it still can not get the Symfony RabbitMQ bundle (https://github.com/php-amqplib/RabbitMqBundle) running in AWS (with Docker). AWS only allows AMQPS and port 5671 to be opened in the AWS managed service.

            This is our current configuration in detail:

            ...

            ANSWER

            Answered 2021-Jun-09 at 09:33

            Finally solved - you have to define a custom AMQPChannel with a custom AMQPConnection with SSL options and then set this AMQPChannel to the producer:

            Source https://stackoverflow.com/questions/67890842

            QUESTION

            TTN decoder - Node-red
            Asked 2021-Jun-08 at 05:25

            In TTN they are no longer supporting large decoders.

            I know what the decoder needs to be in TTN, it is in my DECODER function, but dont know how to execute it in the function node.

            If you use inject Payload [1,2,3] RAW, it injects the raw payload that is msg.payload.payload.uplink_message.frm_payload into the decoder.

            The DECODER needs to decode the raw payload and output it in msg.payload.uplink_message.decoded_payload

            If you use inject Payload [1,2,3] Decoded in the flow you see how the end result needs to look like and the decoded msg.payload.uplink_message.decoded_payload

            I am still learning JavaScript.

            The code in the function node

            ...

            ANSWER

            Answered 2021-Jun-07 at 14:02

            The question still really isn't clear, but if you want to use that code in a function node then I suggest the following:

            Put that code into the "On Start" tab of the function node, but change the first line to the following:

            Source https://stackoverflow.com/questions/67863561

            QUESTION

            How to properly configure spring-security with vaadin14 to handle 2 entry points - keyclaok and DB
            Asked 2021-Jun-06 at 08:12

            I have a vaadin14 application that I want to enable different types of authentication mechanisms on different url paths. One is a test url, where authentication should use DB, and the other is the production url that uses keycloak.

            I was able to get each authentication mechanism to work separately, but once I try to put both, I get unexpected results.

            In both cases, I get login page, but the authentication doesn't work correctly. Here's my security configuration, what am I doing wrong?

            ...

            ANSWER

            Answered 2021-Jun-06 at 08:12

            Navigating within a Vaadin UI will change the URL in your browser, but it will not necessarily create a browser request to that exact URL, effectively bypassing the access control defined by Spring security for that URL. As such, Vaadin is really not suited for the request URL-based security approach that Spring provides. For this issue alone you could take a look at my add-on Spring Boot Security for Vaadin which I specifically created to close the gap between Spring security and Vaadin.

            But while creating two distinct Spring security contexts based on the URL is fairly easy, this - for the same reason - will not work well or at all with Vaadin. And that's something even my add-on couldn't help with.

            Update: As combining both security contexts is an option for you, I can offer the following solution (using my add-on): Starting from the Keycloak example, you would have to do the following:

            1. Change WebSecurityConfig to also add your DB-based AuthenticationProvider. Adding your UserDetailsService should still be enough. Make sure to give every user a suitable role.
            2. You have to remove this line from application.properties: codecamp.vaadin.security.standard-auth.enabled = false This will re-enable the standard login without Keycloak via a Vaadin view.
            3. Adapt the KeycloakRouteAccessDeniedHandler to ignore all test views that shouldn't be protected by Keycloak.

            I already prepared all this in Gitlab repo and removed everything not important for the main point of this solution. See the individual commits and their diffs to also help focus in on the important bits.

            Source https://stackoverflow.com/questions/67814818

            QUESTION

            What is the use of heartbeat in stomp protocol?
            Asked 2021-Jun-03 at 15:07

            Currently I am using stomp protocol to send messages to activeMQ and to listen to messages. This is done in Nodejs using stompit library.

            When the application is having high CPU or Memory usage, it stops sending heartbeat to broker. So the broker redelivers the message which is currently being processed, leading to repetitive processing of the same message

            On disabling heartbeat, the application seems to work fine but I am unsure of the further issues disabling heartbeat might cause. Even when the broker is stopped while sending messages, behaviour seems to be same with or without heartbeat

            I have read that it is an optional parameter but I am unable to find out it's exact use cases

            Can anyone mention scenarios where no heart beat can cause issues to the application?

            ...

            ANSWER

            Answered 2021-Jun-03 at 15:07

            Regarding the purpose of heart-beating the STOMP 1.2 specification just says:

            Heart-beating can optionally be used to test the healthiness of the underlying TCP connection and to make sure that the remote end is alive and kicking.

            Heart-beats potentially flow both from the client to the server and from the server to the client so the "remote end" referenced in the spec here could be the client or the server.

            For the server, heart-beating is useful to ensure that server-side resources are cleaned up in a timely manner to avoid excessive strain. Server-side resources are maintained for all client connections and it helps the broker to be able to detect quickly when those connections fail (i.e. heart-beats aren't received) so it can clean up those resources. If heart-beating is disabled then it's possible that a dead connection would not be detected and the server would have to maintain its resources for that dead connection in vain.

            For a client, heart-beating is useful to avoid message loss when performing asynchronous sends. Messages are often sent asynchronously by clients (i.e. fire and forget). If there was no mechanism to detect connection loss the client could continue sending messages async on a dead connection. Those messages would be lost since they would never reach the broker. Heart-beating mitigates this situation.

            Source https://stackoverflow.com/questions/67818409

            QUESTION

            How to parse JSON with XE2 dbxJSON
            Asked 2021-Jun-02 at 19:39

            I am using XE2 and trying to parse a JSON file sent by a robot to a URL. I've looked at several solutions, but most don't apply due to my version of Delphi. I tried to apply the solution I found here: How to parse nested JSON object in Delphi XE2?, but I can't seem to figure out how to get the information I need.

            JSON string:

            ...

            ANSWER

            Answered 2021-Jun-02 at 19:39

            Well, for starters, you don't need to convert your downloaded string to an ASCII encoded TBytes. TJSONObject.ParseJSONValue() has an overload that takes a string as input.

            Second, LJsonObj.Get('ATTITUDE').JsonValue will return a TJSONObject, which you are incorrectly type-casting to a TJSONPair. But that doesn't matter, since you are then ignoring that TJSONPair and instead incorrectly type-casting the input parameter sVALUE from a string to a TJSONPair and then trying to access its children. That is why you are getting the Access Violation.

            But even if you were able to find the TJSONPair for the roll value, you are returning the string value of its JsonString (name) property, not the string value of its JsonValue (value) property.

            Try this instead:

            Source https://stackoverflow.com/questions/67810447

            QUESTION

            Training sound classifier on device
            Asked 2021-Jun-02 at 18:52

            I'm trying to train a CoreML sound classifier on device, on iOS, and I have been struggling to find learning resources on the topic. The sound classifier is used to determine whether a snippet of music is similar to a collection of other songs. Hence the output of the classifier is just a label of either "match" / "no match".

            It is so simple to train with the CreateML app workflow. I am simply trying to get the same kind of training on device in iOS, but as far as I know (please correct me if I'm wrong) iOS doesn't support createML.

            I have been trying to adapt code from various source to get this to work in an iOS playground. I can only find resources on training image classifiers, these two have been the most helpful (1, 2).

            Please see the code that I have come up with so far below.

            ...

            ANSWER

            Answered 2021-Jun-02 at 18:52

            I have managed to solve the error related to the mlUpdate task, the issue was that I was referencing the .mlmodel instead of the compiled version, which is .mlmodelc . When building the iOS app from Xcode this file is automatically generated.

            I now get the following error:

            Source https://stackoverflow.com/questions/67770072

            QUESTION

            Read two lines before last line of text file
            Asked 2021-Jun-02 at 17:26

            I have a log file I am trying to get some info out of. The information I need is on the line prior to last line and also the very last line is/could be blank. So it is actually line before last line or two before last line if last line is blank.

            I know how to get to last line of the file using:

            ...

            ANSWER

            Answered 2021-Jun-02 at 15:55

            Something like this might do it for you

            Source https://stackoverflow.com/questions/67808404

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            XHA (Linux-HA) on the BlueCat Networks Adonis DNS/DHCP Appliance 5.0.2.8 allows remote attackers to cause a denial of service (heartbeat control process crash) via a UDP packet to port 694. NOTE: this may be the same as CVE-2006-3121.
            Multiple cross-site scripting (XSS) vulnerabilities in the Heartbeat module 6.x before 6.x-4.9 for Drupal allow remote authenticated users to inject arbitrary web script or HTML via unspecified vectors.

            Install heartbeat

            You can download it from GitHub.

            Support

            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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            https://github.com/likeastore/heartbeat.git

          • CLI

            gh repo clone likeastore/heartbeat

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            git@github.com:likeastore/heartbeat.git

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