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lambda-spec | Adding λ to your Java Specs | Functional Programming library

 by   ktoso Java Version: Current License: Apache-2.0

 by   ktoso Java Version: Current License: Apache-2.0

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kandi X-RAY | lambda-spec Summary

lambda-spec is a Java library typically used in Programming Style, Functional Programming applications. lambda-spec 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.
The console output would then look like this:. As you can see, the failure reporing is not yet implemented (it’s JUnits report - one passed test), this will be obviously replaced by an autonomous test runner within LambdaSpec.
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Quality
Quality
Security
Security
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kandi-support Support

  • lambda-spec has a low active ecosystem.
  • It has 26 star(s) with 1 fork(s). There are 6 watchers for this library.
  • It had no major release in the last 12 months.
  • There are 8 open issues and 0 have been closed. On average issues are closed in 2537 days. There are no pull requests.
  • It has a neutral sentiment in the developer community.
  • The latest version of lambda-spec is current.
lambda-spec Support
Best in #Functional Programming
Average in #Functional Programming
lambda-spec Support
Best in #Functional Programming
Average in #Functional Programming

quality kandi Quality

  • lambda-spec has 0 bugs and 0 code smells.
lambda-spec Quality
Best in #Functional Programming
Average in #Functional Programming
lambda-spec Quality
Best in #Functional Programming
Average in #Functional Programming

securitySecurity

  • lambda-spec has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
  • lambda-spec code analysis shows 0 unresolved vulnerabilities.
  • There are 0 security hotspots that need review.
lambda-spec Security
Best in #Functional Programming
Average in #Functional Programming
lambda-spec Security
Best in #Functional Programming
Average in #Functional Programming

license License

  • lambda-spec 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.
lambda-spec License
Best in #Functional Programming
Average in #Functional Programming
lambda-spec License
Best in #Functional Programming
Average in #Functional Programming

buildReuse

  • lambda-spec releases are not available. You will need to build from source code and install.
  • Build file is available. You can build the component from source.
  • Installation instructions are not available. Examples and code snippets are available.
lambda-spec Reuse
Best in #Functional Programming
Average in #Functional Programming
lambda-spec Reuse
Best in #Functional Programming
Average in #Functional Programming
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lambda-spec Key Features

Adding λ to your Java Specs!

Example

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import pl.project13.test.lambda.exampleimpl.Adder;
import pl.project13.test.lambda.spec.set.ClassSpecSet;

import static org.fest.assertions.Assertions.assertThat;
import static pl.project13.test.lambda.SpecDSL.describe;

public class ClassSpecTest {

  // this `SpecSet` provides a new instance of the tested class for each `should`
  ClassSpecSet<Adder> it = describe(Adder.class);

  {
    it.should("add two numbers", adder -> {
      // given
      int a = 1;
      int b = 2;

      int expected = 3;

      // when
      int got = adder.add(a, b);

      // then
      assertThat(got).isEqualTo(expected);
    });

    it.should("add a negative number", adder -> {
      // given
      int a = -1;
      int b = 2;

      int expected = 333; // wrong `expected`, to demo failure logging

      // when
      int got = adder.add(a, b);

      // then
      assertThat(got).isEqualTo(expected);
    });

    it.should("add imaginary numbers", MarkAs.pending);
  }

  // currently LambdaSpec has no stand alone runner, so fire it up using JUnit
  @Test
  public void shouldPassAllTests() throws Exception {
    it.shouldPassAllTests();
  }
}

Community Discussions

Trending Discussions on lambda-spec
  • Cannot connect .net core API in AWS Lambda to RDS
  • complete Keras Lambda confusion
Trending Discussions on lambda-spec

QUESTION

Cannot connect .net core API in AWS Lambda to RDS

Asked 2020-Jan-04 at 04:32

I have a .net core web api that I am trying to deploy to AWS Lambda / API Gateway. I get a bland error "Unable to connect to any of the specified MySQL hosts".

My API has 2 endpoints for testing. They are /TestConnect and /TestAWS. The /TestConnect endpoint works properly (returns a "success" string) so I know that the Web Api has deployed properly. The /TestAWS endpoint is just supposed to return the first row of a table. That code is below, but it's pretty straightforward. I know that this isn't best practice, but I used it to test in order to try and eliminate all of the other possibilities.

        [HttpGet("TestAWS")]
        public IActionResult TestAWS()
        {
            try
            {
                string dataString = "";

                MySqlConnectionStringBuilder cnString = new MySqlConnectionStringBuilder();

                cnString.Server = Environment.GetEnvironmentVariable("DB_ENDPOINT");
                cnString.UserID = Environment.GetEnvironmentVariable("USER");
                cnString.Password = Environment.GetEnvironmentVariable("PASSWORD");
                cnString.Database = Environment.GetEnvironmentVariable("DATABASE");
                cnString.Port = Environment.GetEnvironmentVariable("PORT");;

                using (MySqlConnection conn = new MySqlConnection(cnString.ToString()))
                {
                    conn.Open();

                    MySqlCommand cmd = new MySqlCommand("SELECT UserName FROM Users LIMIT 1", conn);

                    using (MySqlDataReader dr = cmd.ExecuteReader())
                    {
                        while (dr.Read())
                        {
                            dataString = dr["userName"].ToString();
                        }
                    }
                }

                return Ok("Returned: " + dataString);
            }
            catch (Exception ex)
            {
                return BadRequest("Returned Date { Environmnet: " + Environment.GetEnvironmentVariable("ASPNETCORE_ENVIRONMENT") + "-" + ex.Message + "}");
            }
        }

To debug the problem, I created a second Lambda function directly in AWS. It's a really simple Node.js function that does the same thing as my API.

var mysql = require('mysql');
var config = require('./config.json');
var pool  = mysql.createPool({
    connectionLimit : 10,
    host            : config.dbhost,
    user            : config.dbuser,
    password        : config.dbpassword,
    database        : config.dbname
  });

  exports.handler = (event, context, callback) => {
    context.callbackWaitsForEmptyEventLoop = false;
pool.getConnection(function(err, connection) {
  if (err) throw err; // not connected

  connection.query('SELECT UserName FROM Users LIMIT 1', function (error, results, fields) {
    connection.release();

    if (error) callback(error);
    else callback(null, results[0].UserName)
  });
});
  };

That function works properly and returns the row from the table.

Both functions have identical VPC settings. Same VPC, same subnets, same IAM role, same Security Group. That tells me that the AWS infrastructure is setup correctly and that there are no issues with the VPC, NACLs, etc.

I think that just leaves the C# code.

Do I have to make some changes to the Web Api in order for it to work? It almost seems like I have to add some Lambda-specific handling in the C# like I did in the working Lambda, but I can't find any references to that effect.

Any help is greatly appreciated.

ANSWER

Answered 2020-Jan-04 at 04:32

From the comments: @Bradley Grainger

"Try switching from MySql.Data to nuget.org/packages/MySqlConnector, it is a much more stable library with better .NET Core support."

I switched to that package and everything is working. I can't ultimately say that was the only problem since I re-created my entire VPC / subnet / db, etc. during this debugging process.

However, after I re-created the VPC, I ran my code with the MySql.Data library and it didn't work, then I switched to the MySqlConnnector library and it worked without error.

The library was at least part of the problem.

Source https://stackoverflow.com/questions/59541126

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

Vulnerabilities

No vulnerabilities reported

Install lambda-spec

You can download it from GitHub.
You can use lambda-spec 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 lambda-spec 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 .

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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