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Testcontainers is an Elixir library that supports ExUnit tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.
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lib/connection.ex
# SPDX-License-Identifier: MIT
defmodule Testcontainers.Connection do
alias Testcontainers.DockerUrl
alias Testcontainers.Logger
alias Testcontainers.Connection.DockerHostStrategyEvaluator
alias Testcontainers.Connection.DockerHostStrategy.DockerSocketPath
alias Testcontainers.Connection.DockerHostStrategy.DockerHostFromProperties
alias Testcontainers.Connection.DockerHostStrategy.DockerHostFromEnv
alias Testcontainers.Connection.DockerHostStrategy.DockerHostFromProperties
alias DockerEngineAPI.Connection
@timeout 300_000
def get_connection(options \\ []) do
docker_host_url = docker_base_url()
Logger.log("Using docker host url: #{docker_host_url}")
options = Keyword.merge(options, base_url: docker_host_url, recv_timeout: @timeout)
Connection.new(options)
end
defp docker_base_url do
strategies = [
%DockerHostFromProperties{key: "tc.host"},
%DockerHostFromEnv{},
%DockerSocketPath{socket_paths: ["/var/run/docker.sock"]},
%DockerHostFromProperties{key: "docker.host"},
%DockerSocketPath{}
]
case DockerHostStrategyEvaluator.run_strategies(strategies, []) do
{:ok, docker_host} ->
DockerUrl.construct(docker_host)
:error ->
exit("Failed to find docker host")
end
end
end