// In this hook, we create a temporary file and add its path to an
// environment variable. Later on, this environment variable is
// looked up by the removeExecutorHook to locate and delete this
// file.
virtual Result<Environment> slaveLaunchExecutorEnvironmentDecorator(
const ExecutorInfo& executorInfo,
const TaskInfo& taskInfo)
{
LOG(INFO) << "Executing 'slaveLaunchExecutorEnvironmentDecorator' hook";
// Find the label value for the label that was created in the
// label decorator hook above.
Option<string> labelValue;
foreach (const Label& label, taskInfo.labels().labels()) {
if (label.key() == testLabelKey) {
labelValue = label.value();
CHECK_EQ(labelValue.get(), testLabelValue);
}
}
CHECK_SOME(labelValue);
// Create a temporary file.
Try<string> file = os::mktemp();
CHECK_SOME(file);
CHECK_SOME(os::write(file.get(), labelValue.get()));
// Inject file path into command environment.
Environment environment;
Environment::Variable* variable = environment.add_variables();
variable->set_name(testEnvironmentVariableName);
variable->set_value(file.get());
return environment;
}
// In this hook, we create a new environment variable "FOO" and set
// it's value to "bar".
virtual Result<Environment> slaveExecutorEnvironmentDecorator(
const ExecutorInfo& executorInfo)
{
LOG(INFO) << "Executing 'slaveExecutorEnvironmentDecorator' hook";
Environment environment;
if (executorInfo.command().has_environment()) {
environment.CopyFrom(executorInfo.command().environment());
}
Environment::Variable* variable = environment.add_variables();
variable->set_name("FOO");
variable->set_value("bar");
return environment;
}