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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/docker_host_strategy/docker_socket_path.ex
# SPDX-License-Identifier: MIT
defmodule Testcontainers.DockerSocketPathStrategy do
@moduledoc false
require Logger
defstruct socket_paths: []
defimpl Testcontainers.DockerHostStrategy do
alias Testcontainers.DockerUrl
defp default_socket_paths do
[
"/var/run/docker.sock",
Path.expand("~/.docker/run/docker.sock"),
Path.expand("~/.docker/desktop/docker.sock")
] ++
case System.get_env("XDG_RUNTIME_DIR") do
nil ->
[]
path ->
[
"#{path}/podman/podman.sock",
"#{path}/docker.sock"
]
end
end
def execute(strategy, _input) do
Enum.reduce_while(
if length(strategy.socket_paths) == 0 do
default_socket_paths()
else
strategy.socket_paths
end,
{:error, {:docker_socket_not_found, []}},
fn path, {:error, {:docker_socket_not_found, tried_paths}} ->
if path != nil && File.exists?(path) do
path_with_scheme = "unix://" <> path
case DockerUrl.test_docker_host(path_with_scheme) do
:ok ->
{:halt, {:ok, path_with_scheme}}
{:error, reason} ->
Logger.debug("Docker socket path #{path} failed: #{reason}")
{:cont, {:error, {:docker_socket_not_found, tried_paths ++ [path]}}}
end
else
{:cont, {:error, {:docker_socket_not_found, tried_paths ++ [path]}}}
end
end
)
end
end
end