wrench::CloudComputeService

class CloudComputeService : public wrench::ComputeService

A cloud-based compute service that manages a set of physical hosts and controls access to their resources by (transparently) executing jobs in VM instances.

Subclassed by wrench::VirtualizedClusterComputeService

Public Functions

CloudComputeService(const std::string &hostname, const std::vector<std::string> &execution_hosts, const std::string &scratch_space_mount_point, WRENCH_PROPERTY_COLLECTION_TYPE property_list = {}, WRENCH_MESSAGE_PAYLOADCOLLECTION_TYPE messagepayload_list = {})

Constructor.

Parameters:

• hostname – the hostname on which to start the service

• execution_hosts – the list of the names of the hosts available for running virtual machines

• scratch_space_mount_point – the mount point for the cloud service’s scratch space (”” means none)

• property_list – a property list ({} means “use all defaults”)

• messagepayload_list – a message payload list ({} means “use all defaults”)

Throws:

std::runtime_error –

~CloudComputeService()

Destructor.

virtual std::string createVM(unsigned long num_cores, double ram_memory, WRENCH_PROPERTY_COLLECTION_TYPE property_list = {}, WRENCH_MESSAGE_PAYLOADCOLLECTION_TYPE messagepayload_list = {})

Create a BareMetalComputeService VM (balances load on execution hosts)

Parameters:

• num_cores – the number of cores for the VM

• ram_memory – the VM’s RAM memory_manager_service capacity

• property_list – a property list for the BareMetalComputeService that will run on the VM ({} means “use all defaults”)

• messagepayload_list – a message payload list for the BareMetalComputeService that will run on the VM ({} means “use all defaults”)

Throws:

• ExecutionException –

• std::runtime_error –

Returns:

A VM name

virtual void destroyVM(const std::string &vm_name)

Destroy a VM.

Parameters:

vm_name – the name of the VM

Throws:

• ExecutionException –

• std::invalid_argument –

virtual std::shared_ptr<BareMetalComputeService> getVMComputeService(const std::string &vm_name)

Get the compute service running on a VM, if any.

Parameters:

vm_name – the name of the VM

Throws:

• ExecutionException –

• std::invalid_argument –

Returns:

A BareMetalComputeService that runs on the VM, or nullptr if none

virtual std::string getVMPhysicalHostname(const std::string &vm_name)

Get the name of the physical host on which a VM is running.

Parameters:

vm_name – the name of the VM

Throws:

• ExecutionException –

• std::invalid_argument –

Returns:

physical host name

virtual bool isVMDown(const std::string &vm_name)

Method to check whether a VM is currently down.

Parameters:

vm_name – the name of the VM

Throws:

std::invalid_argument –

Returns:

true or false

virtual bool isVMRunning(const std::string &vm_name)

Method to check whether a VM is currently running.

Parameters:

vm_name – the name of the VM

Throws:

std::invalid_argument –

Returns:

true or false

virtual bool isVMSuspended(const std::string &vm_name)

Method to check whether a VM is currently running.

Parameters:

vm_name – the name of the VM

Throws:

std::invalid_argument –

Returns:

true or false

virtual void resumeVM(const std::string &vm_name)

Resume a suspended VM.

Parameters:

vm_name – the name of the VM

Throws:

• ExecutionException –

• std::invalid_argument –

virtual void shutdownVM(const std::string &vm_name)

Shutdown an active VM.

Parameters:

vm_name – the name of the VM

Throws:

• ExecutionException –

• std::invalid_argument –

virtual void shutdownVM(const std::string &vm_name, bool send_failure_notifications, ComputeService::TerminationCause termination_cause)

Shutdown an active VM.

Parameters:

• vm_name – the name of the VM

• send_failure_notifications – whether to send the failure notifications

• termination_cause – the termination cause (if failure notifications are sent)

Throws:

• ExecutionException –

• std::invalid_argument –

virtual std::shared_ptr<BareMetalComputeService> startVM(const std::string &vm_name)

Start a VM.

Parameters:

vm_name – the name of the VM

Throws:

• ExecutionException –

• std::invalid_argument –

Returns:

A BareMetalComputeService that runs on the VM

inline virtual void submitCompoundJob(std::shared_ptr<CompoundJob> job, const std::map<std::string, std::string> &service_specific_args) override

Method to submit a compound job to the service.

Parameters:

• job – The job being submitted

• service_specific_arguments – the set of service-specific arguments

virtual bool supportsCompoundJobs() override

Returns true if the service supports compound jobs.

Returns:

true or false

virtual bool supportsPilotJobs() override

Returns true if the service supports pilot jobs.

Returns:

true or false

virtual bool supportsStandardJobs() override

Returns true if the service supports standard jobs.

Returns:

true or false

virtual void suspendVM(const std::string &vm_name)

Suspend a running VM.

Parameters:

vm_name – the name of the VM

Throws:

• ExecutionException –

• std::invalid_argument –

inline virtual void terminateCompoundJob(std::shared_ptr<CompoundJob> job) override

Method to terminate a compound job.

Parameters:

job – the standard job

void validateProperties()

Validate the service’s properties.

Throws:

std::invalid_argument –