// TODO(bmahler): Expose the executor name / source.
JSON::Object model(
const TaskInfo& task,
const FrameworkID& frameworkId,
const TaskState& state,
const vector<TaskStatus>& statuses)
{
JSON::Object object;
object.values["id"] = task.task_id().value();
object.values["name"] = task.name();
object.values["framework_id"] = frameworkId.value();
if (task.has_executor()) {
object.values["executor_id"] = task.executor().executor_id().value();
} else {
object.values["executor_id"] = "";
}
object.values["slave_id"] = task.slave_id().value();
object.values["state"] = TaskState_Name(state);
object.values["resources"] = model(task.resources());
JSON::Array array;
foreach (const TaskStatus& status, statuses) {
array.values.push_back(model(status));
}
Task createTask(
const TaskInfo& task,
const TaskState& state,
const FrameworkID& frameworkId)
{
Task t;
t.mutable_framework_id()->MergeFrom(frameworkId);
t.set_state(state);
t.set_name(task.name());
t.mutable_task_id()->MergeFrom(task.task_id());
t.mutable_slave_id()->MergeFrom(task.slave_id());
t.mutable_resources()->MergeFrom(task.resources());
if (task.has_executor()) {
t.mutable_executor_id()->CopyFrom(task.executor().executor_id());
}
t.mutable_labels()->MergeFrom(task.labels());
if (task.has_discovery()) {
t.mutable_discovery()->MergeFrom(task.discovery());
}
return t;
}
void ExecuteTask (const TaskInfo& task) {
const string& executorId = task.executor().executor_id().value();
const string& data = task.data();
vector<string> args = split(data, '\n');
Resources resources = task.resources();
LOG(INFO)
<< "executor " << executorId
<< " with '" << join(args, " ") << "'"
<< " and " << resources;
Resources persistent = filterIsPersistentVolume(resources);
for (const auto& volume : persistent) {
const string& path = volume.disk().volume().container_path();
LOG(INFO)
<< "using persistent volume " << path;
os::mkdir(path + "/data");
os::mkdir(path + "/logs");
os::mkdir(path + "/apps");
string cmd = "ls -l " + path;
int r = system(cmd.c_str());
if (r) {
LOG(WARNING)
<< "failed with " << r;
}
}
size_t len = args.size();
char** a = static_cast<char**>(malloc(sizeof(char*) * (len + 1)));
for (size_t i = 0; i < len; ++i) {
a[i] = const_cast<char*>(args[i].c_str());
LOG(INFO)
<< i << ". argument: " << a[i];
}
a[len] = nullptr;
execv(args[0].c_str(), a);
LOG(FATAL)
<< "PANIC execv failed";
// upps, exec failed
_exit(1);
}
Task createTask(
const TaskInfo& task,
const TaskState& state,
const FrameworkID& frameworkId)
{
Task t;
t.mutable_framework_id()->CopyFrom(frameworkId);
t.set_state(state);
t.set_name(task.name());
t.mutable_task_id()->CopyFrom(task.task_id());
t.mutable_slave_id()->CopyFrom(task.slave_id());
t.mutable_resources()->CopyFrom(task.resources());
if (task.has_executor()) {
t.mutable_executor_id()->CopyFrom(task.executor().executor_id());
}
if (task.has_labels()) {
t.mutable_labels()->CopyFrom(task.labels());
}
if (task.has_discovery()) {
t.mutable_discovery()->CopyFrom(task.discovery());
}
if (task.has_container()) {
t.mutable_container()->CopyFrom(task.container());
}
// Copy `user` if set.
if (task.has_command() && task.command().has_user()) {
t.set_user(task.command().user());
} else if (task.has_executor() && task.executor().command().has_user()) {
t.set_user(task.executor().command().user());
}
return t;
}
void launchTask(ExecutorDriver* driver, const TaskInfo& task)
{
if (run.isSome()) {
// TODO(alexr): Use `protobuf::createTaskStatus()`
// instead of manually setting fields.
TaskStatus status;
status.mutable_task_id()->CopyFrom(task.task_id());
status.set_state(TASK_FAILED);
status.set_message(
"Attempted to run multiple tasks using a \"docker\" executor");
driver->sendStatusUpdate(status);
return;
}
// Capture the TaskID.
taskId = task.task_id();
// Capture the kill policy.
if (task.has_kill_policy()) {
killPolicy = task.kill_policy();
}
LOG(INFO) << "Starting task " << taskId.get();
CHECK(task.has_container());
CHECK(task.has_command());
CHECK(task.container().type() == ContainerInfo::DOCKER);
Try<Docker::RunOptions> runOptions = Docker::RunOptions::create(
task.container(),
task.command(),
containerName,
sandboxDirectory,
mappedDirectory,
task.resources() + task.executor().resources(),
cgroupsEnableCfs,
taskEnvironment,
None(), // No extra devices.
defaultContainerDNS
);
if (runOptions.isError()) {
// TODO(alexr): Use `protobuf::createTaskStatus()`
// instead of manually setting fields.
TaskStatus status;
status.mutable_task_id()->CopyFrom(task.task_id());
status.set_state(TASK_FAILED);
status.set_message(
"Failed to create docker run options: " + runOptions.error());
driver->sendStatusUpdate(status);
_stop();
return;
}
// We're adding task and executor resources to launch docker since
// the DockerContainerizer updates the container cgroup limits
// directly and it expects it to be the sum of both task and
// executor resources. This does leave to a bit of unaccounted
// resources for running this executor, but we are assuming
// this is just a very small amount of overcommit.
run = docker->run(
runOptions.get(),
Subprocess::FD(STDOUT_FILENO),
Subprocess::FD(STDERR_FILENO));
run->onAny(defer(self(), &Self::reaped, lambda::_1));
// Delay sending TASK_RUNNING status update until we receive
// inspect output. Note that we store a future that completes
// after the sending of the running update. This allows us to
// ensure that the terminal update is sent after the running
// update (see `reaped()`).
inspect = docker->inspect(containerName, DOCKER_INSPECT_DELAY)
.then(defer(self(), [=](const Docker::Container& container) {
if (!killed) {
containerPid = container.pid;
// TODO(alexr): Use `protobuf::createTaskStatus()`
// instead of manually setting fields.
TaskStatus status;
status.mutable_task_id()->CopyFrom(taskId.get());
status.set_state(TASK_RUNNING);
status.set_data(container.output);
if (container.ipAddress.isSome()) {
// TODO(karya): Deprecated -- Remove after 0.25.0 has shipped.
Label* label = status.mutable_labels()->add_labels();
label->set_key("Docker.NetworkSettings.IPAddress");
label->set_value(container.ipAddress.get());
NetworkInfo* networkInfo =
status.mutable_container_status()->add_network_infos();
// Copy the NetworkInfo if it is specified in the
// ContainerInfo. A Docker container has at most one
// NetworkInfo, which is validated in containerizer.
if (task.container().network_infos().size() > 0) {
networkInfo->CopyFrom(task.container().network_infos(0));
networkInfo->clear_ip_addresses();
}
NetworkInfo::IPAddress* ipAddress = networkInfo->add_ip_addresses();
ipAddress->set_ip_address(container.ipAddress.get());
containerNetworkInfo = *networkInfo;
}
driver->sendStatusUpdate(status);
}
return Nothing();
}));
inspect.onFailed(defer(self(), [=](const string& failure) {
LOG(ERROR) << "Failed to inspect container '" << containerName << "'"
<< ": " << failure;
// TODO(bmahler): This is fatal, try to shut down cleanly.
// Since we don't have a container id, we can only discard
// the run future.
}));
inspect.onReady(defer(self(), &Self::launchCheck, task));
inspect.onReady(
defer(self(), &Self::launchHealthCheck, containerName, task));
}