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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/connection.ex
# SPDX-License-Identifier: MIT
defmodule Testcontainers.Connection do
@moduledoc false
alias Testcontainers.Constants
alias Testcontainers.DockerUrl
alias Testcontainers.Logger
alias Testcontainers.DockerHostStrategyEvaluator
alias Testcontainers.DockerSocketPathStrategy
alias Testcontainers.DockerHostFromPropertiesStrategy
alias Testcontainers.DockerHostFromEnvStrategy
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,
user_agent: Constants.user_agent()
)
{Connection.new(options), docker_host_url}
end
defp docker_base_url do
strategies = [
%DockerHostFromPropertiesStrategy{key: "tc.host"},
%DockerHostFromEnvStrategy{},
%DockerSocketPathStrategy{socket_paths: ["/var/run/docker.sock"]},
%DockerHostFromPropertiesStrategy{key: "docker.host"},
%DockerSocketPathStrategy{}
]
case DockerHostStrategyEvaluator.run_strategies(strategies, []) do
{:ok, docker_host} ->
DockerUrl.construct(docker_host)
:error ->
exit("Failed to find docker host")
end
end
end