mop | MQTT on Pulsar implemented using Pulsar Protocol Handler | Pub Sub library

by streamnative Java Version: v3.0.0.2 License: Apache-2.0

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | mop Summary

mop is a Java library typically used in Messaging, Pub Sub applications. mop has no bugs, it has no vulnerabilities, it has build file available, it has a Permissive License and it has low support. You can download it from GitHub.

MQTT-on-Pulsar (aka MoP) is developed to support MQTT protocol natively on Apache Pulsar. Currently, only MQTT 3.1.1 supported.

Support

Quality

Security

License

Reuse

Support

mop has a low active ecosystem.

It has 139 star(s) with 45 fork(s). There are 27 watchers for this library.

It had no major release in the last 12 months.

There are 16 open issues and 137 have been closed. On average issues are closed in 82 days. There are 4 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of mop is v3.0.0.2

Quality

mop has 0 bugs and 0 code smells.

Security

mop has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

mop code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

mop is licensed under the Apache-2.0 License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

mop releases are available to install and integrate.

Build file is available. You can build the component from source.

Installation instructions, examples and code snippets are available.

It has 9585 lines of code, 616 functions and 152 files.

It has medium code complexity. Code complexity directly impacts maintainability of the code.

Top functions reviewed by kandi - BETA

kandi has reviewed mop and discovered the below as its top functions. This is intended to give you an instant insight into mop implemented functionality, and help decide if they suit your requirements.

Publish message to adapter
Write message to pulsar topic
Convert message to ByteBuf
Extracts a topic name from a MQTT topic name
Send packet
Increment permits
Converts an entry to MQTT messages
Returns JSON representation of Mop statistics
Returns a new version or null if the string is not valid
Handle connection lost
Returns new channel initializers
Handles incoming messages
Process Publish message
Process an adapter message
Parses properties from properties
Processing publish messages
Encodes the adapter message
Process PubAck messages
Test whether or not a given topic name
Refresh cache for messages
Process a unsubscribe message
Converts a MQTT message to a packet
Process a un - subscribe message
This method is used to decode the packet
Creates and returns a PIX client instance
Process a subscribe message

Get all kandi verified functions for this library.

mop Key Features

No Key Features are available at this moment for mop.

mop Examples and Code Snippets

No Code Snippets are available at this moment for mop.

Community Discussions

Trending Discussions on mop

Currency Converter JavaScript projects flag issue

C# slows down 30x when computing with infinities

ElementTree not finding present tags

Dynamically created class with invocant constraint

Passing several fields if meets a criteria to a Hidden Form Field

compare pairs of values of a dictionary and then export the result to a dataframe

pdk-test-crypto-perf throughput low using intel QAT

how to create data class with this dynamic json keys while using retrofit and andorid jetpack libraries

Java Rest Template throws java.lang.IllegalArgumentException: Comparison method violates its general contract

Invoking print-object on a list of symbols

QUESTION

Currency Converter JavaScript projects flag issue

Asked 2022-Mar-02 at 17:43

I submitted all of my code below for a better understanding. The code is fine, my question is: How can I perfectly show multiple countries with their country name list? I mean: When I change the country name, then the flag image should be changed automatically, so users see the country name and image. I already put many links in my loadFlag() function in my js file, but this is not working. Please help me, how can i do it with my code? Thanks in advance and love from the top of my heart.

...

ANSWER

Answered 2022-Mar-02 at 17:43

You're loading country flags from flagcdn.com in which each png is named after a two-letter country code that you have in your country_code value.

You just need to update your loadFlag function to properly update the img tag's property values. See the working code snippet below.

Source https://stackoverflow.com/questions/71325304

QUESTION

C# slows down 30x when computing with infinities

Asked 2022-Feb-24 at 09:26

The following program in C# computes 10 million Babylonian iterations for the square root.

...

ANSWER

Answered 2022-Feb-24 at 09:26

The problem was fixed by unchecking Prefer 32-bits in the C# project options.

I was also able to reproduce the performance problem on C++ side by changing the Enable Enhanced Instruction Set option in Visual Studio to either No Enhanced Instructions (/arch:IA32) or Streaming SIMD Extensions (/arch:SSE). These options are only available when building a 32-bit program. As was hinted by @shingo in the comments, there seems to be a performance problem when computing with NaNs in older 32-bit instruction sets. Indeed, the given code computes solely with NaNs when the parameter a is set to infinity.

Source https://stackoverflow.com/questions/71248082

QUESTION

ElementTree not finding present tags

Asked 2022-Feb-23 at 15:19

Here's how I parse the xml response from this url

...

ANSWER

Answered 2022-Feb-23 at 15:19

Unfortunately, you have to deal with the namespace in the file. So try it this way:

Source https://stackoverflow.com/questions/71239102

QUESTION

Dynamically created class with invocant constraint

Asked 2022-Jan-31 at 18:25

Official docs says that class can be built dynamically like so:

...

ANSWER

Answered 2022-Jan-31 at 16:06

Change:

Source https://stackoverflow.com/questions/70927460

QUESTION

Passing several fields if meets a criteria to a Hidden Form Field

Asked 2021-Dec-06 at 18:09

I need to pass multiple filled values to a hidden form field using javascript/jquery. The fields must have a value or don't pass. I can pass the regular text fields with no problem but the checkbox and radio fields always seem to get me. Javascript is not my expertise so I'm willing to learn. Thanks in advance.

The values we are wanting to capture are:

Questions/comments
Product Interests (this can be multiple values)
Industry
Number of Employees
Multiple Locations if "true".

Each item will be separated by a pipe character.

...

ANSWER

Answered 2021-Dec-06 at 18:09

Here's one way. You can just put a change event listener on the form tag - any changes to the form will trigger the script. The string that gets written into the hidden field is JSON and it can be easily decoded on the back end.

Source https://stackoverflow.com/questions/70240550

QUESTION

compare pairs of values of a dictionary and then export the result to a dataframe

Asked 2021-Nov-29 at 10:20

I have a df like this:

...

ANSWER

Answered 2021-Nov-29 at 09:57

def create_similarity_df(df_to_dict):
    df_similarity = pd.DataFrame()
    for user in df_to_dict:
        for i in range(len(df_to_dict[user])):
            for j in range(i+1,len(df_to_dict[user])):
                df_similarity = df_similarity.append(
                    {'user':user,
                     'id1':df_to_dict[user][i]['id'],
                     'id2':df_to_dict[user][j]['id'],
                     'label1':df_to_dict[user][i]['label'],
                     'label2':df_to_dict[user][j]['label'],
                     'similarity':DistJaccard(df_to_dict[user][i]['label'],df_to_dict[user][j]['label'])},
                    ignore_index=True)
    return df_similarity

Source https://stackoverflow.com/questions/70152390

QUESTION

pdk-test-crypto-perf throughput low using intel QAT

Asked 2021-Nov-16 at 07:44

I am doing some dpdk cryptodev tests related to throughout with intel QAT. When using the dpdk app dpdk-test-crypto-perf , I notice that the throughput is way less than what is mentioned in http://fast.dpdk.org/doc/perf/DPDK_20_11_Intel_crypto_performance_report.pdf

...

ANSWER

Answered 2021-Nov-16 at 07:44

Based on the logs and live to debug it is concluded the performance is in line with the expected values of both SW and HW. Following are the reasons variation

QAT HW crypto is done on Xeon cascade lake cores
SW Crypto is run on corei7 11th gen platform
Core clocks on corei7 goes up to 5Ghz with turbo boost
HW crypto is run with CPU cores from remote NUMA
HW crypto is limited with memory controller to use with -n 4
HW crypto runs for a total of 30000000 and SW crypto is run for 10000000
HW crypto devices are 3 but lcores passed is 5 causing 2 lcores to share the same HW.
HW crypto is done over 3 VF hence total capacity should be summed up rather than individual results.

With these the right command to use is

HW: ./dpdk-test-crypto-perf --socket-mem 2048,1 --legacy-mem -l 4,6 -w 0000:3d:01.0 -- --buffer-sz 64,128,256,512,1024,2048 --optype cipher-then-auth --ptest throughput --auth-key-sz 64 --cipher-key-sz 16 --cipher-iv-sz 16 --auth-op generate --burst-sz 32 --total-ops 30000000 --silent --digest-sz 20 --auth-algo sha1-hmac --cipher-algo aes-cbc --cipher-op encrypt --devtype crypto_qat

SW: ./dpdk-test-crypto-perf --socket-mem 2048,1 --legacy-mem -l 4,6 --vdev crypto_aesni_mb_pmd_1 -a 0000:00:00.0 -- --buffer-sz 64,128,256,512,1024,2048 --optype cipher-then-auth --ptest throughput --auth-key-sz 64 --cipher-key-sz 16 --cipher-iv-sz 16 --auth-op generate --burst-sz 32 --total-ops 30000000 --silent --digest-sz 20 --auth-algo sha1-hmac --cipher-algo aes-cbc --cipher-op encrypt --devtype crypto_aesni_mb

for 64B on Xeon (3.1Ghz) we were able to get 3.2Gbps, while corei7 (5Ghz) with SW was able to get 4.2Gbps. with 2048B HW on Xeon were able to achieve 50Gbps while SW 19.2Gbps.

Note: in Xeon there are drops for enqueue and dequeue, which can be reduced with platform and BIOS settings further.

Source https://stackoverflow.com/questions/69968932

QUESTION

how to create data class with this dynamic json keys while using retrofit and andorid jetpack libraries

Asked 2021-Nov-04 at 09:37

this is json output:

{"query":{"apikey":"...","base_currency":"USD","timestamp":1635972203},"data":{"JPY":113.99127,"CNY":6.39464,"CHF":0.9114,"CAD":1.23881,"MXN":20.54423,"INR":74.44808,"BRL":5.57063,"RUB":71.80098,"KRW":1175.11443,"IDR":14295.1734,"TRY":9.63691,"SAR":3.75119,"SEK":8.52554,"NGN":410.22181,"PLN":3.94541,"ARS":99.81213,"NOK":8.49529,"TWD":27.78459,"IRR":42000.64577,"AED":3.67284,"COP":3827.77643,"THB":33.32047,"ZAR":15.23269,"DKK":6.40357,"MYR":4.15212,"SGD":1.34783,"ILS":3.11624,"HKD":7.78416,"EGP":15.7003,"PHP":50.65881,"CLP":811.73282,"PKR":169.4547,"IQD":1458.01958,"DZD":136.722,"KZT":428.93534,"QAR":3.6499,"CZK":21.94293,"PEN":4.0008,"RON":4.25921,"VND":22747.41599,"BDT":85.57148,"HUF":308.78687,"UAH":26.25062,"AOA":598.0065,"MAD":9.06226,"OMR":0.38491,"CUC":24.00026,"BYR":2.00003,"AZN":1.69502,"LKR":200.00259,"SDG":438.90856,"SYP":2511.07513,"MMK":1746.02836,"DOP":56.29093,"UZS":10690.31508,"KES":111.25137,"GTQ":7.73108,"URY":44.18107,"HRV":6.47553,"MOP":8.01811,"ETB":47.31305,"CRC":635.74442,"TZS":2298.03956,"TMT":3.49009,"TND":2.80635,"PAB":1.00002,"LBP":1505.5263,"RSD":101.16202,"LYD":4.54568,"GHS":6.00013,"YER":249.956,"BOB":6.82018,"BHD":0.377,"CDF":1999.22628,"PYG":6875.19435,"UGX":3550.05822,"SVC":8.7497,"TTD":6.74137,"AFN":90.84208,"NPR":119.13277,"HNL":24.06657,"BIH":1.68483,"BND":1.34753,"ISK":129.16264,"KHR":4060.117,"GEL":3.14003,"MZN":63.22108,"BWP":11.45513,"PGK":3.5113,"JMD":153.22216,"XAF":564.86281,"NAD":15.2189,"ALL":105.53113,"SSP":391.0052,"MUR":42.90097,"MNT":2830.04693,"NIO":35.21094,"LAK":10330.27262,"MKD":53.08156,"AMD":474.80501,"MGA":3928.06091,"XPF":102.48118,"TJS":11.26034,"HTG":98.0013,"BSD":1.00003,"MDL":17.41883,"RWF":1018.02194,"KGS":84.77099,"GNF":9510.20822,"SRD":21.40242,"SLL":10779.18736,"XOF":568.81159,"MWK":807.36713,"FJD":2.06806,"ERN":15.05028,"SZL":15.21372,"GYD":207.78611,"BIF":1980.25293,"KYD":0.82002,"MVR":15.42042,"LSL":15.23032,"LRD":146.80405,"CVE":94.95278,"DJF":177.50237,"SCR":14.42749,"SOS":575.00647,"GMD":52.15123,"KMF":424.6543,"STD":21.11031,"XRP":0.83002,"AUD":1.34372,"BGN":1.68394,"BTC":0.0159,"JOD":0.70801,"GBP":0.73402,"ETH":0.00022,"EUR":0.86112,"LTC":0,"NZD":1.40184}}

The data section contains many key value pairs, but their number and names vary according to base_currency. (For example if i send request with USD there is no USD key or if i send request with CNY there is no CNY key in data section)

So what kind of data class should I create so that I can use it with the retrofit and gsoncreator libraries. (I am also trying to use and learn jetpack android libraries if this is important)

i use that data classes: (I am not using gson annotations because i believe my variables names are correct and i try that it doesn't help)

data class ResponseFromApi(val data: Data,val query: Query)

data class Query(val apikey: String, val base_currency: String, val timestamp: Int)

data class Data(val hashmapForData: HashMap) (i suspect some values are integer but i am not sure)

it doesn't work. Maybe that's not the problem. I don't know but least i need to know, Are these classes correct? What is the proper way to do this.

And i don't know how to get error message from retrofit object so i can identify the problem. But this is another question.

...

ANSWER

Answered 2021-Nov-04 at 09:37

Arpit Shukla's answer is correct.

Source https://stackoverflow.com/questions/69833024

QUESTION

Java Rest Template throws java.lang.IllegalArgumentException: Comparison method violates its general contract

Asked 2021-Sep-28 at 17:11

I am not using any Comparators/Sorting in my Java code, still it is throwing " java.lang.IllegalArgumentException: Comparison method violates its general contract!" Exception.

Below is the piece of code that throws exception on the restTemplate.exchange line on debugging.

Started getting this exception when I changed the version of spring-boot-starter-parent from 2.3.9 to 2.5.3

How should I resolve this?

...

ANSWER

Answered 2021-Sep-28 at 15:34

The stacktrace indicates that for some reason the Comparator method for the MediaType.java class is not ok. As you pointed out that this seems to work locally but not in the cloud I would suggest you compare runtimes.

Looking through the source code for the AbstractMessageConverterMethodProcessor.java the sorting method is called when the content type for the response can not be found. Maybe you can force a content type by setting an accept header in the request. Assuming your expecting a JSON response:

headers.setAccept(List.of(MediaType.APPLICATION_JSON));

Not sure if this fixes it though, as I could not reproduce the issue in the first place.

Source https://stackoverflow.com/questions/69363790

QUESTION

Invoking print-object on a list of symbols

Asked 2021-Sep-20 at 13:53

I have a global list of symbols, CLOS objects, and a corresponding print-object method defined that gives them succinct summaries. I'd like to provide the user with a show-all method that loops over them and prints the same output that I get at the REPL, using print-object. An earlier question suggested method-function to look up the specific method and then funcall it, but using closer-mop isn't an option.

I can get a specific object to print in the loop, but not looping over the list, e.g.:

...

ANSWER

Answered 2021-Sep-20 at 13:53

A symbol is not the same as a thing that it names.

Since print-object is a (generic) function, normal evaluation applies. It gets the value of foo::my-object as an argument. It never sees the symbol foo::my-object. If you iterate over a list of symbols, you still need to lookup whatever values you want, e. g. using symbol-value if they name global values.

You have specialized your print-object method on some class, right? Not on an eql specializer for each symbol?

Source https://stackoverflow.com/questions/69252282

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

Vulnerabilities

No vulnerabilities reported

Install mop

Clone the MoP project from GitHub to your local. The NAR file can be found at this location.
Clone the MoP project from GitHub to your local. git clone https://github.com/streamnative/mop.git cd mop
Build the project. mvn clean install -DskipTests
The NAR file can be found at this location. ./mqtt-impl/target/pulsar-protocol-handler-mqtt-${version}.nar
Configure the Pulsar broker to run the MoP protocol handler as a plugin by adding configurations to the Pulsar configuration file, such as broker.conf or standalone.conf.
Set the configuration of the MoP protocol handler. Add the following properties and set their values in the Pulsar configuration file, such as conf/broker.conf or conf/standalone.conf. Property Suggested value Default value messagingProtocols mqtt null protocolHandlerDirectory Location of MoP NAR file ./protocols Example messagingProtocols=mqtt protocolHandlerDirectory=./protocols
Set the MQTT server listeners. Example mqttListeners=mqtt://127.0.0.1:1883 advertisedAddress=127.0.0.1 Note The default hostname of advertisedAddress is InetAddress.getLocalHost().getHostName(). If you'd like to config this, please keep the same as Pulsar broker's advertisedAddress.

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 .

Find more information at: