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. More...

#include <CloudComputeService.h>

Inheritance diagram for wrench::CloudComputeService:

Public Member Functions
	CloudComputeService (const std::string &hostname, std::vector< std::string > execution_hosts, std::string scratch_space_mount_point, std::map< std::string, std::string > property_list={}, std::map< std::string, double > messagepayload_list={})
	Constructor. More...

virtual std::string	createVM (unsigned long num_cores, double ram_memory, std::map< std::string, std::string > property_list={}, std::map< std::string, double > messagepayload_list={})
	Create a bare_metal VM (balances load on execution hosts) More...

virtual std::string	createVM (unsigned long num_cores, double ram_memory, std::string desired_vm_name, std::map< std::string, std::string > property_list={}, std::map< std::string, double > messagepayload_list={})
	Create a bare_metal VM (balances load on execution hosts) More...

virtual void	destroyVM (const std::string &vm_name)
	Destroy a VM. More...

std::vector< std::string >	getExecutionHosts ()
	Get the list of execution hosts available to run VMs. More...

virtual std::shared_ptr< BareMetalComputeService >	getVMComputeService (const std::string &vm_name)
	Get the compute service running on a VM, if any. More...

virtual std::string	getVMPhysicalHostname (const std::string &vm_name)
	Get the name of the physical host on which a VM is running. More...

virtual bool	isVMDown (const std::string &vm_name)
	Method to check whether a VM is currently down. More...

virtual bool	isVMRunning (const std::string &vm_name)
	Method to check whether a VM is currently running. More...

virtual bool	isVMSuspended (const std::string &vm_name)
	Method to check whether a VM is currently running. More...

virtual void	resumeVM (const std::string &vm_name)
	Resume a suspended VM. More...

virtual void	shutdownVM (const std::string &vm_name)
	Shutdown an active VM. More...

virtual std::shared_ptr< BareMetalComputeService >	startVM (const std::string &vm_name)
	Start a VM. More...

virtual void	suspendVM (const std::string &vm_name)
	Suspend a running VM. More...

Public Member Functions inherited from wrench::ComputeService
std::map< std::string, double >	getCoreFlopRate ()
	Get the per-core flop rate of the compute service's hosts. More...

double	getFreeScratchSpaceSize ()
	Get the free space on the compute service's scratch storage space. More...

std::vector< std::string >	getHosts ()
	Get the list of the compute service's compute host. More...

std::map< std::string, double >	getMemoryCapacity ()
	Get the RAM capacities for each of the compute service's hosts. More...

unsigned long	getNumHosts ()
	Get the number of hosts that the compute service manages. More...

std::map< std::string, double >	getPerHostAvailableMemoryCapacity ()
	Get ram availability for each of the compute service's host. More...

std::map< std::string, unsigned long >	getPerHostNumCores ()
	Get core counts for each of the compute service's host. More...

std::map< std::string, unsigned long >	getPerHostNumIdleCores ()
	Get idle core counts for each of the compute service's host. More...

std::shared_ptr< StorageService >	getScratchSharedPtr ()
	Get a shared pointer to the compute service's scratch storage space. More...

unsigned long	getTotalNumCores ()
	Get the total core counts for all hosts of the compute service. More...

virtual unsigned long	getTotalNumIdleCores ()
	Get the total idle core count for all hosts of the compute service. More...

double	getTotalScratchSpaceSize ()
	Get the total capacity of the compute service's scratch storage space. More...

double	getTTL ()
	Get the time-to-live of the compute service. More...

bool	hasScratch ()
	Checks if the compute service has a scratch space. More...

virtual bool	isThereAtLeastOneHostWithIdleResources (unsigned long num_cores, double ram)
	Method to find out if, right now, the compute service has at least one host with some idle number of cores and some available RAM. More...

void	stop () override
	Stop the compute service - must be called by the stop() method of derived classes.

bool	supportsPilotJobs ()
	Get whether the compute service supports pilot jobs or not. More...

bool	supportsStandardJobs ()
	Get whether the compute service supports standard jobs or not. More...

void	terminateJob (std::shared_ptr< WorkflowJob > job)
	Terminate a previously-submitted job (which may or may not be running yet) More...

Public Member Functions inherited from wrench::Service
void	assertServiceIsUp ()
	Throws an exception if the service is not up. More...

std::string	getHostname ()
	Get the name of the host on which the service is / will be running. More...

double	getNetworkTimeoutValue ()
	Returns the service's network timeout value. More...

bool	getPropertyValueAsBoolean (std::string)
	Get a property of the Service as a boolean. More...

double	getPropertyValueAsDouble (std::string)
	Get a property of the Service as a double. More...

std::string	getPropertyValueAsString (std::string)
	Get a property of the Service as a string. More...

unsigned long	getPropertyValueAsUnsignedLong (std::string)
	Get a property of the Service as an unsigned long. More...

bool	isUp ()
	Returns true if the service is UP, false otherwise. More...

void	resume ()
	Resume the service. More...

void	setNetworkTimeoutValue (double value)
	Sets the service's network timeout value. More...

void	start (std::shared_ptr< Service > this_service, bool daemonize, bool auto_restart)
	Start the service. More...

void	suspend ()
	Suspend the service.

Protected Attributes
std::vector< std::string >	execution_hosts
	List of execution host names.

std::map< std::string, unsigned long >	used_cores_per_execution_host
	Map of number of used cores at the hosts.

std::map< std::string, double >	used_ram_per_execution_host
	Map of used RAM at the hosts.

std::map< std::string, std::pair< std::shared_ptr< S4U_VirtualMachine >, std::shared_ptr< BareMetalComputeService > > >	vm_list
	A map of VMs.

Additional Inherited Members
Static Public Attributes inherited from wrench::ComputeService
static constexpr unsigned long	ALL_CORES = ULONG_MAX
	A convenient constant to mean "use all cores of a physical host" whenever a number of cores is needed when instantiating compute services.

static constexpr double	ALL_RAM = DBL_MAX
	A convenient constant to mean "use all ram of a physical host" whenever a ram capacity is needed when instantiating compute services.

Detailed Description

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.

Constructor & Destructor Documentation

◆ CloudComputeService()

wrench::CloudComputeService::CloudComputeService	(	const std::string &	hostname,
		std::vector< std::string >	execution_hosts,
		std::string	scratch_space_mount_point,
		std::map< std::string, std::string >	property_list = `{}`,
		std::map< std::string, double >	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")

Exceptions

std::runtime_error

Member Function Documentation

◆ createVM() [1/2]

std::string wrench::CloudComputeService::createVM	(	unsigned long	num_cores,
		double	ram_memory,
		std::map< std::string, std::string >	property_list = `{}`,
		std::map< std::string, double >	messagepayload_list = `{}`
	)

virtual

Create a bare_metal 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 bare_metal that will run on the VM ({} means "use all defaults")
messagepayload_list	a message payload list for the bare_metal that will run on the VM ({} means "use all defaults")

Returns: A VM name

Exceptions

WorkflowExecutionException
std::runtime_error

◆ createVM() [2/2]

std::string wrench::CloudComputeService::createVM	(	unsigned long	num_cores,
		double	ram_memory,
		std::string	desired_vm_name,
		std::map< std::string, std::string >	property_list = `{}`,
		std::map< std::string, double >	messagepayload_list = `{}`
	)

virtual

Create a bare_metal 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 bare_metal that will run on the VM ({} means "use all defaults")
messagepayload_list	a message payload list for the bare_metal that will run on the VM ({} means "use all defaults")

Returns: A VM name

Exceptions

WorkflowExecutionException
std::runtime_error

◆ destroyVM()

void wrench::CloudComputeService::destroyVM ( const std::string & vm_name )

virtual

Destroy a VM.

Parameters

vm_name the name of the VM

Exceptions

WorkflowExecutionException
std::invalid_argument

◆ getExecutionHosts()

std::vector< std::string > wrench::CloudComputeService::getExecutionHosts ( )

Get the list of execution hosts available to run VMs.

Returns: a list of hostnames

Exceptions

WorkflowExecutionException

◆ getVMComputeService()

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

virtual

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

Parameters

vm_name the name of the VM

Returns: A bare_metal that runs on the VM, or nullptr if none

Exceptions

WorkflowExecutionException
std::invalid_argument

◆ getVMPhysicalHostname()

std::string wrench::CloudComputeService::getVMPhysicalHostname ( const std::string & vm_name )

virtual

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

Parameters

vm_name the name of the VM

Returns: physical host name

Exceptions

WorkflowExecutionException
std::invalid_argument

◆ isVMDown()

bool wrench::CloudComputeService::isVMDown ( const std::string & vm_name )

virtual

Method to check whether a VM is currently down.

Parameters

vm_name the name of the VM

Returns: true or false

Exceptions

std::invalid_argument

◆ isVMRunning()

bool wrench::CloudComputeService::isVMRunning ( const std::string & vm_name )

virtual

Method to check whether a VM is currently running.

Parameters

vm_name the name of the VM

Returns: true or false

Exceptions

std::invalid_argument

◆ isVMSuspended()

bool wrench::CloudComputeService::isVMSuspended ( const std::string & vm_name )

virtual

Method to check whether a VM is currently running.

Parameters

vm_name the name of the VM

Returns: true or false

Exceptions

std::invalid_argument

◆ resumeVM()

void wrench::CloudComputeService::resumeVM ( const std::string & vm_name )

virtual

Resume a suspended VM.

Parameters

vm_name the name of the VM

Exceptions

WorkflowExecutionException
std::invalid_argument

◆ shutdownVM()

void wrench::CloudComputeService::shutdownVM ( const std::string & vm_name )

virtual

Shutdown an active VM.

Parameters

vm_name the name of the VM

Exceptions

WorkflowExecutionException
std::invalid_argument

◆ startVM()

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

virtual

Start a VM.

Parameters

vm_name the name of the VM

Returns: A bare_metal that runs on the VM

Exceptions

WorkflowExecutionException
std::invalid_argument

◆ suspendVM()

void wrench::CloudComputeService::suspendVM ( const std::string & vm_name )

virtual

Suspend a running VM.

Parameters

vm_name the name of the VM

Exceptions

WorkflowExecutionException
std::invalid_argument

The documentation for this class was generated from the following files:

CloudComputeService.h
CloudComputeService.cpp

Public Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ CloudComputeService()

Member Function Documentation

◆ createVM() [1/2]

◆ createVM() [2/2]

◆ destroyVM()

◆ getExecutionHosts()

◆ getVMComputeService()

◆ getVMPhysicalHostname()

◆ isVMDown()

◆ isVMRunning()

◆ isVMSuspended()

◆ resumeVM()

◆ shutdownVM()

◆ startVM()

◆ suspendVM()