wrench::CloudComputeService

class wrench::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 sercvice’s strach 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 –

virtual std::string createVM(unsigned long num_cores, double ram_memory, std::string desired_vm_name, 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

  • desired_vm_name – the VM’s desired name (”” means “pick a name for me”)

  • 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
Returns

A VM name

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
Returns

A VM name

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

Destroy a VM.

Parameters

vm_name – the name of the VM

Throws
std::vector<std::string> getExecutionHosts()

Get the list of execution hosts available to run VMs.

Throws

ExecutionException –

Returns

a list of hostnames

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

Shutdown an active VM.

Parameters

vm_name – the name of the VM

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

Start a VM.

Parameters

vm_name – the name of the VM

Throws
Returns

A BareMetalComputeService that runs on the VM

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