state_machine | Adds support for creating state machines

by pluginaweek Ruby Version: v1.2.0 License: MIT

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

kandi X-RAY | state_machine Summary

state_machine is a Ruby library typically used in User Interface applications. state_machine has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

State machines make it dead-simple to manage the behavior of a class. Too often, the state of an object is kept by creating multiple boolean attributes and deciding how to behave based on the values. This can become cumbersome and difficult to maintain when the complexity of your class starts to increase. state_machine simplifies this design by introducing the various parts of a real state machine, including states, events, transitions, and callbacks. However, the api is designed to be so simple you don't even need to know what a state machine is :).

Support

Quality

Security

License

Reuse

Support

state_machine has a medium active ecosystem.

It has 3726 star(s) with 492 fork(s). There are 81 watchers for this library.

It had no major release in the last 6 months.

There are 58 open issues and 225 have been closed. On average issues are closed in 174 days. There are 32 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of state_machine is v1.2.0

Quality

state_machine has 0 bugs and 0 code smells.

Security

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

state_machine code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

state_machine is licensed under the MIT License. This license is Permissive.

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

Reuse

state_machine 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.

state_machine saves you 17614 person hours of effort in developing the same functionality from scratch.

It has 34914 lines of code, 4275 functions and 135 files.

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

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state_machine Key Features

No Key Features are available at this moment for state_machine.

state_machine Examples and Code Snippets

No Code Snippets are available at this moment for state_machine.

Community Discussions

Trending Discussions on state_machine

My VDHL code runs incorrectly - square root in vhdl

Making a subtype from an enumerated type [vhdl]

ERROR AccessDenied: Access Denied at Request.extractError (/var/task/node_modules/aws-sdk/lib/services/s3.js

UnrecognizedClientException","errorMessage":"The security token included in the request is invalid when testing lambda function locally

AWS SAM template - set Integration response mapping template

Amazon S3 getObject() receives access denied with NodeJS

Why does a DynamoDB item update with an update expression cause a 500 InternalFailure & a 30 second hang?

Error when updating AppSync API using Amplify CI/CD Pipelines with expired AppSync API KEY: API key not found

How to change order state from open to quote on order created in shopware6?

Unable to retrieve cloudWatch GetMetricData in Nodejs application

QUESTION

My VDHL code runs incorrectly - square root in vhdl

Asked 2022-Feb-11 at 14:55

library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;

entity RaccinCarreSequentielle is

generic(    
    N: natural:= 16
    );
port(
    X: unsigned(2*N-1 downto 0);
    reset : in std_logic; --clear signal
    clk : in std_logic;
    state_done :  in std_logic; --start
    result_done : out std_logic;
    result :      out unsigned(2*N-1 downto 0)
    );
end entity;

architecture state_machine_raccincarre_arc of RaccinCarreSequentielle is
    type state is (s0_wait,s1_init,s2_calcul,s3_fini);
    signal pre_state,next_state: state;
begin
    state_register:process(reset,clk)
    begin
        if reset = '1' then
            pre_state <= s0_wait;
        elsif rising_edge(clk) then
            pre_state <= next_state;
        end if;
    end process state_register;

state_machine: process(pre_state,state_done)
    variable rx,rz,rv : unsigned(2*N-1 downto 0);
    variable ri: unsigned(N-1 downto 0);
begin
    case pre_state is
        when s0_wait =>
            if state_done = '1' then
                next_state <= s1_init;
            else 
                next_state <= s0_wait;
            end if;
        when s1_init => 
            next_state <= s2_calcul;
            rx := x;
            rz := (others => '0');
            rv := (2*N-2 => '1', others => '0');
            ri := to_unsigned(N-1,N);
        when s2_calcul =>
            if ri > 0 then
                    ri := ri - 1;
                    rz := rz + rv;
                    if rx > rz then
                         rx := rx - rz;
                         rz := rz + rv;
                    else 
                         rz := rz - rv;
                    end if;
                    rz := '0' & rz(2*N-1 downto 1);
                    rv := "00" & rv(2*N-1 downto 2);
                    next_state <= s2_calcul;
                 else
                    next_state <= s3_fini;
            end if;
        when s3_fini =>
            result <= rz;           
            if state_done = '0' then
                next_state <= s0_wait;
            else 
                next_state <= s3_fini;
            end if;
        when others =>
            null;
    end case;
end process state_machine;
                
result_proc: process(pre_state)
begin
    if pre_state = s3_fini then
        result_done <= '1';
    else 
        result_done <= '0';
    end if;
end process result_proc;
end architecture;

...

ANSWER

Answered 2022-Feb-11 at 14:55

You cannot memorize anything in a combinatorial part of your design. So you need registers for ri, rx, rv and rz. These registers are somehow part of your global state which is indeed a combination of them, and of the pre_state register.

Let's continue with the style you already use: one synchronous process for the registers, another for the combinatorial part, and a next_xxx signal for the input of each xxx register.

Source https://stackoverflow.com/questions/71067907

QUESTION

Making a subtype from an enumerated type [vhdl]

Asked 2022-Jan-07 at 13:07

After some searching, I cannot seem to find the answer to my question on creating subtypes of enumerated types in VHDL.

If I have a type describing the states of my state machine e.g.

...

ANSWER

Answered 2022-Jan-07 at 13:07

In the specific case, where state1 to state2 spans a range of values, it is possible to define the subtype as:

Source https://stackoverflow.com/questions/70621014

QUESTION

ERROR AccessDenied: Access Denied at Request.extractError (/var/task/node_modules/aws-sdk/lib/services/s3.js

Asked 2021-Dec-27 at 10:54

I use nodejs s3 package "aws-sdk" It works fine when I use serverless-offline run on my mac. The s3.getSignedUrl and s3.listObjects function both work fine.

But when I run my deployed app, the s3.getSignedUrl works fine but the s3.listObjects not. I got this error in CloudWatch:

In CloudWatch > Log groups > /aws/lambda/mamahealth-api-stage-userFilesIndex:

...

ANSWER

Answered 2021-Dec-27 at 10:54

In the last line of your IAM role, you grant permissions the lambda function to perform s3:PutObject, s3:GetObject, s3:DeleteObject and s3:ListBucket on the S3MasterResourceBucketArn/*.

I believe that the first 3 actions and the last one have different resource requirements. For the first 3 (PutObject, GetObject, and DeleteObject) the resource name is correct. For the last one (ListBucket) I believe it must be the arn of the bucket without the star at the end (``S3MasterResourceBucketArn`).

As a good practice, you should split your policy into multiple statements, like:

Source https://stackoverflow.com/questions/70490882

QUESTION

UnrecognizedClientException","errorMessage":"The security token included in the request is invalid when testing lambda function locally

Asked 2021-Oct-27 at 08:36

I am trying to use aws sam to invoke my lambda function locally for testing. The function reads an item from a dynamodb table. I have spin up a local dynamodb container where the desired table is created.

Ran below commands to create a local dynamodb container.

docker network create lambda-local
docker run —-network=lambda-local —-name users -d -p 8000:8000 amazon/dynamodb-local
aws dynamodb create-table --table-name employees --attribute-definitions AttributeName=name,AttributeType=S --key-schema AttributeName=name,KeyType=HASH --provisioned-throughput ReadCapacityUnits=5,WriteCapacityUnits=5 --endpoint-url=http://127.0.0.1:8000

Then using below command I am able to verify that all is working fine as far as local dynamodb is concerned.

aws dynamodb list-tables --endpoint-url http://localhsot:8000

But then, when I try to run the below command, I get an error.

...

ANSWER

Answered 2021-Oct-27 at 08:36

You need to have the access and secret key configured along with the region in your local machine using the AWS CLI. This error is raised because of either not having correct access and secret keys or not having it configured.

Refer the below link for reference: https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-quickstart.html

Source https://stackoverflow.com/questions/69735263

QUESTION

AWS SAM template - set Integration response mapping template

Asked 2021-Oct-22 at 06:58

I have a AWS SAM template that creates a API Gateway hooked into a Step Function.

This is all working fine, but I need to add a Integration Response Mapping Template to the response back from Step Functions.

I cant see that this is possible with SAM templates?

I found the relevant Cloud Formation template for it: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-apitgateway-method-integration-integrationresponse.html

But It looks like I would have to create the whole AWS::ApiGateway::Method / Integration / IntegrationResponses chain - and then I'm not sure how you reference that from the other parts of the SAM template.

I read that it can be done with openAPI / Swagger definition - is that the only way? Or is there a cleaner way to simply add this template?

This is watered down version of what I have just to demonstrate ...

...

ANSWER

Answered 2021-Oct-22 at 06:58

Right now you're using AWS SAM events in your state machine to construct the API for you, which is a very easy way to easily construct the API. However, certain aspects of the API cannot be constructed this way.

You can still use AWS SAM however to construct the API with all the advanced features when you use the DefinitionBody attribute of the AWS::Serverless::Api (or the DefinitionUri). This allows you to specify the API using the OpenAPI specification with the OpenAPI extensions.

You still need to define the event in the StateMachine though, since this will also ensure that the correct permissions are configured for your API to call your other services. If you don't specify the event, you'll have to fix the permissions yourself.

Source https://stackoverflow.com/questions/69664089

QUESTION

Amazon S3 getObject() receives access denied with NodeJS

Asked 2021-Oct-16 at 20:01

I'm trying to get a file stored in Amazon S3 with nodeJS but I get access denied from aws.

AccessDenied: Access Denied at Request.extractError (/home/marc/Disco/Projects/AtlasFitness/server/node_modules/aws-sdk/lib/services/s3.js:699:35) at Request.callListeners (/home/marc/Disco/Projects/AtlasFitness/server/node_modules/aws-sdk/lib/sequential_executor.js:106:20) at Request.emit (/home/marc/Disco/Projects/AtlasFitness/server/node_modules/aws-sdk/lib/sequential_executor.js:78:10) at Request.emit (/home/marc/Disco/Projects/AtlasFitness/server/node_modules/aws-sdk/lib/request.js:688:14) at Request.transition (/home/marc/Disco/Projects/AtlasFitness/server/node_modules/aws-sdk/lib/request.js:22:10) at AcceptorStateMachine.runTo (/home/marc/Disco/Projects/AtlasFitness/server/node_modules/aws-sdk/lib/state_machine.js:14:12) at /home/marc/Disco/Projects/AtlasFitness/server/node_modules/aws-sdk/lib/state_machine.js:26:10 at Request. (/home/marc/Disco/Projects/AtlasFitness/server/node_modules/aws-sdk/lib/request.js:38:9) at Request. (/home/marc/Disco/Projects/AtlasFitness/server/node_modules/aws-sdk/lib/request.js:690:12) at Request.callListeners (/home/marc/Disco/Projects/AtlasFitness/server/node_modules/aws-sdk/lib/sequential_executor.js:116:18)

Here are is the User policy:

Get Object expanded:

...

ANSWER

Answered 2021-Oct-16 at 20:01

Your ACL configuration is untouched, your policy is correct, you don't have any restricting bucket policies & your code also looks perfectly fine to me.

Double-check that fileKey contains the full key for the object e.g. folder1/folder2/folder3/myFile.extension.

A file probably does not exist with the key you've specified - make sure fileKey's value is an exact match of the object's key.

The reason you get a 403 Access Denied response instead of a 404 Not Found response is you do not have permissions for s3:ListBucket - read the reasons why AWS returns 403 instead of 404 for security reasons in my answer here.

Source https://stackoverflow.com/questions/69597144

QUESTION

Why does a DynamoDB item update with an update expression cause a 500 InternalFailure & a 30 second hang?

Asked 2021-Oct-12 at 10:11

I'm getting a 500 Internal Error when trying to perform an update using an UpdateExpression using the Node.js AWS SDK (AWS.DynamoDB.DocumentClient).

The operation hangs for about 30 seconds and then returns this error:

...

ANSWER

Answered 2021-Oct-11 at 16:58

Use ExpressionAttributeNames to define your attribute names, instead of adding them to ExpressionAttributeValues.

ExpressionAttributeNames are used to specify dynamic attribute names, however, you're specifying overrideAttr inside ExpressionAttributeValues.

Also, you must use the hash sign - # - for indicating placeholders for attribute names.

This should work:

Source https://stackoverflow.com/questions/69528136

QUESTION

Error when updating AppSync API using Amplify CI/CD Pipelines with expired AppSync API KEY: API key not found

Asked 2021-Oct-04 at 13:42

We have AWS Amplify project with CI/CD enabled and AppSync as API enabled for my backend. CI/CD was working fine till the API_KEY of AppSync app was not expired, now it has been expired and pipelines are failing. I have tried manually updating the API_KEY expiration, but the pipeline still fails. There are solutions described to sort out manually or upgrade Amplify CLI version, but it seems I don't have both options in my case.

Do we have any third option?

Below are logs from the build pipeline.

...

ANSWER

Answered 2021-Oct-04 at 13:42

After adding "CreateAPIKey": 0 to parametes.json has resolved my issue.

Reference

Source https://stackoverflow.com/questions/69251947

QUESTION

How to change order state from open to quote on order created in shopware6?

Asked 2021-Sep-30 at 16:30

I am developing a plugin for the quotation request and I am following the order method to create the quote request, I need to change the orderstatus from open to quote as the order is created, I tried to change the stateId but it did not work. The order status at the backend is not changing to the customized one.

...

ANSWER

Answered 2021-Sep-11 at 15:29

In your code, you are not saving anything. Please have a look at the state machine documentation, how this can be accomplished:

https://developer.shopware.com/docs/guides/plugins/plugins/checkout/order/using-the-state-machine

Source https://stackoverflow.com/questions/69088973

QUESTION

Unable to retrieve cloudWatch GetMetricData in Nodejs application

Asked 2021-Sep-08 at 12:46

I need to get MetricData in Node.js application for my AWS Lambda

Error received:

...

ANSWER

Answered 2021-Sep-08 at 12:46

You have to set the Resource to * and use condition keys to limit the access scope:

https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/iam-cw-condition-keys-namespace.html

So your policy statement might look something like:

Source https://stackoverflow.com/questions/69097321

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

Vulnerabilities

No vulnerabilities reported

Install state_machine

You can download it from GitHub.
On a UNIX-like operating system, using your system’s package manager is easiest. However, the packaged Ruby version may not be the newest one. There is also an installer for Windows. Managers help you to switch between multiple Ruby versions on your system. Installers can be used to install a specific or multiple Ruby versions. Please refer ruby-lang.org for more information.

Support

If you use YARD to generate documentation for your projects, state_machine can be enabled to generate API docs for auto-generated methods from each state machine definition as well as providing embedded visualizations. See the generated API documentation under the examples folder to see what the output looks like.

Find more information at: