public async Task Setup()
{
using (var config = DockerClientConfigurationFactory.Create())
using (var client = config.CreateClient())
{
var containers = await client.Containers.ListContainersAsync(new ContainersListParameters()
{
All = true
});
var container = containers.FirstOrDefault(c => c.Names.Contains("/" + ContainerName));
if (container == null)
{
await CreateImage(client);
container = await CreateContainer(client);
}
this.ContainerId = container.ID;
if (container.State != "running")
{
var started = await client.Containers.StartContainerAsync(container.ID, new ContainerStartParameters());
if (!started)
{
Assert.Fail("Cannot start the docker container");
}
}
await WaitForContainerReady();
}
}
public static async Task <long> Execute(string containerId)
{
// container may be up but postgres might not quite be fully started yet
using (var config = DockerClientConfigurationFactory.Create())
using (var client = config.CreateClient())
{
var createArgs = new ContainerExecCreateParameters
{
AttachStdin = true,
AttachStdout = true,
Cmd = new List <string>()
{
"pg_isready",
// "-h blah" // to test failures
},
Tty = true,
AttachStderr = true,
Detach = true
};
var created = await client.Containers.ExecCreateContainerAsync(containerId, createArgs);
await client.Containers.StartContainerExecAsync(created.ID);
// pg_isready returns 0 to the shell if the server is accepting connections normally,
// 1 if the server is rejecting connections (for example during startup),
// 2 if there was no response to the connection attempt,
// and 3 if no attempt was made (for example due to invalid parameters).
var result = await client.Containers.InspectContainerExecAsync(created.ID);
return(result.ExitCode);
}
}
public static async Task <long> Execute(string containerId, string filename, string logFilename)
{
Trace.WriteLine($"Initializing docker client");
using (var config = DockerClientConfigurationFactory.Create())
using (var client = config.CreateClient())
{
var createArgs = new ContainerExecCreateParameters
{
AttachStdin = true,
AttachStdout = true,
// psql -U postgres -f home/path/script.sql -v ON_ERROR_STOP=1
Cmd = new List <string>()
{
//"bash",
//"/usr/lib/postgresql/11/bin/psql",
"touch /home/test.txt",
//"-U postgres",
//@"-c \'l'"
//"-e",
//$"-f {filename}",
//$"-L {logFilename}",
//"-v",
//"ON_ERROR_STOP=1"
},
Tty = false,
AttachStderr = true,
Detach = false,
//Privileged = true
};
Trace.WriteLine($"exec create for container {containerId}");
var created = await client.Containers.ExecCreateContainerAsync(containerId, createArgs);
Trace.WriteLine($"starting container execution for created id {created.ID}");
await client.Containers.StartContainerExecAsync(created.ID);
ContainerExecInspectResponse result;
do
{
/*
* psql returns 0 to the shell if it finished normally,
* 1 if a fatal error of its own occurs (e.g. out of memory, file not found),
* 2 if the connection to the server went bad and the session was not interactive,
* and 3 if an error occurred in a script and the variable ON_ERROR_STOP was set.
*/
result = await client.Containers.InspectContainerExecAsync(created.ID);
Trace.WriteLine($"Inspect result => Pid: {result.Pid}, running: {result.Running}, exit code: {result.ExitCode}");
var logArgs = new ContainerLogsParameters
{
ShowStderr = true,
ShowStdout = true
};
using (var logStream = await client.Containers.GetContainerLogsAsync(containerId, logArgs))
using (var reader = new StreamReader(logStream))
{
var logs = reader.ReadToEnd();
Trace.WriteLine(logs);
}
await Task.Delay(250);
} while (result.Running);
return(result.ExitCode);
}
}