![]() ![]() Var result = _db.TestTable.FirstOrDefault(tbl => tbl.Recordid = 5) Ĭonnection refused at (NpgsqlTimeout timeout)Īt (NpgsqlTimeout timeout)Īt (NpgsqlTimeout timeout)Īt (NpgsqlConnection conn, NpgsqlTimeout timeout)Īt ()Īt .Open()Īt .()Īt .d_3 1.MoveNext() at (IEnumerable1 source)Īt lambda_method(Closure, Quer圜ontext )Īt .Quer圜ompiler.c_Displa圜lass19_1 1.b_1(Quer圜ontext qc) at (IQueryable1 source, Expression`1 predicate) TestEntities.TestDbContext _db = new TestEntities.TestDbContext(contextOptions) Now that we have the connection set up the database connection 9.x or 11) that is compatible with the database you are connecting to.Var contextOptions = new DbContextOptionsBuilder() In this example, I am installing the libraries for PostgreSQL 10, but this could be any version (e.g. ![]() ![]() You’ll need to create a new Docker image to install the PostgreSQL client libraries required by pg. Step 1: Create a LambCI-based Docker image with dependent libraries Example: Using pg and nokogiri gems in LambdaĮxamples below are in the repository on GitHubįor convenience, shell commands described below are also in the Makefile in the repository. You can also use it to compile native dependencies knowing that you’re linking to the same library versions that exist on AWS Lambda and then deploy using the AWS CLI. You can use it for running your functions in the same strict Lambda environment, knowing that they’ll exhibit the same behavior when deployed live. From their README:Ī sandboxed local environment that replicates the live AWS Lambda environment almost identically – including installed software and libraries, file structure and permissions, environment variables, context objects and behaviors Emulating the Lambda environment with LambCI and Dockerĭocker-lambda is an emulated Lambda environment that will allow us to create and compile packages for later deployment to AWS Lambda. This means we need to find a way to package and compile dependencies ahead of time in an environment that is compatible with the Lambda environment. Lambda has no way to execute a command inside the environment before the code is loaded. onto a running machine, before generating an AMI, or inside a Docker container. In a production or pre-production environment, that would mean running bundle install on the target machine after copying the code into it, e.g. The way to accommodate different development and production environments is to run bundle install in each of them. bundle config build.pg -with-pg-config=/usr/pgsql-10/bin/pg_config). Bundler will also need to know where to find these dependencies. On Linux these might be the postgresql-devel and "Development Tools" libraries. Your development environment is likely different to the one in production and the magic that Bundler does behind the scenes when running bundle install will be different when relying on having the correct headers, binaries and build tools for any dependencies in each environment.įor example, on my Mac I need Xcode, Homebrew and PostgreSQL installed in order to install the pg gem. Bundlerīundler is the primary dependency management system for Ruby 2. For Ruby, this includes gems, binaries and other assets. The Lambda operating model requires that a Lambda function is deployed as a standalone package that contains all dependencies in a single. It however doesn’t address how to use RubyGems that have dependencies outside of Ruby. The AWS blog post Announcing Ruby Support for AWS Lambda blog post does an excellent job of describing how to get up and running quickly, and also includes an example on how to use RubyGems dependencies when deploying your Lambda functions. This post describes how Bundler should be configured for Lambda and how to ensure binary dependencies are available for gems such as pg and nokogiri. Running Ruby-based Lambda functions with binary dependencies can be a bit tricky because AWS Lambda expects the packages with a specific structure, and because included binaries must be built and packaged to work for the Lambda operating environment. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |