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-rw-r--r--src/resource_inventory/admin.py4
-rw-r--r--src/resource_inventory/models.py465
-rw-r--r--src/resource_inventory/pdf_templater.py6
-rw-r--r--src/resource_inventory/resource_manager.py121
4 files changed, 320 insertions, 276 deletions
diff --git a/src/resource_inventory/admin.py b/src/resource_inventory/admin.py
index 7ff510b..ab21dd1 100644
--- a/src/resource_inventory/admin.py
+++ b/src/resource_inventory/admin.py
@@ -11,7 +11,7 @@
from django.contrib import admin
from resource_inventory.models import (
- HostProfile,
+ ResourceProfile,
InterfaceProfile,
DiskProfile,
CpuProfile,
@@ -32,7 +32,7 @@ from resource_inventory.models import (
OPNFVConfig,
OPNFVRole,
Image,
- HostConfiguration,
+ ResourceConfiguration,
RemoteInfo
)
diff --git a/src/resource_inventory/models.py b/src/resource_inventory/models.py
index a8b75d9..20e080b 100644
--- a/src/resource_inventory/models.py
+++ b/src/resource_inventory/models.py
@@ -8,21 +8,30 @@
##############################################################################
from django.contrib.auth.models import User
+from django.core.exceptions import ValidationError
from django.db import models
-from django.core.validators import RegexValidator
+from django.db.models import Q
import re
from account.models import Lab
+from dashboard.utils import AbstractModelQuery
-# profile of resources hosted by labs
-class HostProfile(models.Model):
+"""
+Profiles of resources hosted by labs.
+
+These describe hardware attributes of the different Resources a lab hosts.
+A single Resource subclass (e.g. Server) may have instances that point to different
+Profile models (e.g. an x86 server profile and armv8 server profile.
+"""
+
+
+class ResourceProfile(models.Model):
id = models.AutoField(primary_key=True)
- host_type = models.PositiveSmallIntegerField(default=0)
name = models.CharField(max_length=200, unique=True)
description = models.TextField()
- labs = models.ManyToManyField(Lab, related_name="hostprofiles")
+ labs = models.ManyToManyField(Lab, related_name="resourceprofiles")
def validate(self):
validname = re.compile(r"^[A-Za-z0-9\-\_\.\/\, ]+$")
@@ -34,12 +43,33 @@ class HostProfile(models.Model):
def __str__(self):
return self.name
+ def get_resources(self, lab=None, working=True, unreserved=False):
+ """
+ Return a list of Resource objects which have this profile.
+
+ If lab is provided, only resources at that lab will be returned.
+ If working=True, will only return working hosts
+ """
+ resources = []
+ query = Q(profile=self)
+ if lab:
+ query = query & Q(lab=lab)
+ if working:
+ query = query & Q(working=True)
+
+ resources = ResourceQuery.filter(query)
+
+ if unreserved:
+ resources = [r for r in resources if not r.is_reserved()]
+
+ return resources
+
class InterfaceProfile(models.Model):
id = models.AutoField(primary_key=True)
speed = models.IntegerField()
name = models.CharField(max_length=100)
- host = models.ForeignKey(HostProfile, on_delete=models.CASCADE, related_name='interfaceprofile')
+ host = models.ForeignKey(ResourceProfile, on_delete=models.CASCADE, related_name='interfaceprofile')
nic_type = models.CharField(
max_length=50,
choices=[
@@ -48,6 +78,7 @@ class InterfaceProfile(models.Model):
],
default="onboard"
)
+ order = models.IntegerField(default=-1)
def __str__(self):
return self.name + " for " + str(self.host)
@@ -61,7 +92,7 @@ class DiskProfile(models.Model):
("HDD", "HDD")
])
name = models.CharField(max_length=50)
- host = models.ForeignKey(HostProfile, on_delete=models.CASCADE, related_name='storageprofile')
+ host = models.ForeignKey(ResourceProfile, on_delete=models.CASCADE, related_name='storageprofile')
rotation = models.IntegerField(default=0)
interface = models.CharField(
max_length=50,
@@ -88,7 +119,7 @@ class CpuProfile(models.Model):
("aarch64", "aarch64")
])
cpus = models.IntegerField()
- host = models.ForeignKey(HostProfile, on_delete=models.CASCADE, related_name='cpuprofile')
+ host = models.ForeignKey(ResourceProfile, on_delete=models.CASCADE, related_name='cpuprofile')
cflags = models.TextField(null=True)
def __str__(self):
@@ -99,16 +130,115 @@ class RamProfile(models.Model):
id = models.AutoField(primary_key=True)
amount = models.IntegerField()
channels = models.IntegerField()
- host = models.ForeignKey(HostProfile, on_delete=models.CASCADE, related_name='ramprofile')
+ host = models.ForeignKey(ResourceProfile, on_delete=models.CASCADE, related_name='ramprofile')
def __str__(self):
return str(self.amount) + "G for " + str(self.host)
+"""
+Resource Models
+
+These models represent actual hardware resources
+with varying degrees of abstraction.
+"""
+
+
+class ResourceTemplate(models.Model):
+ """
+ Models a "template" of a complete, configured collection of resources that can be booked.
+
+ For example, this may represent a Pharos POD. This model is a template of the actual
+ resources that will be booked. This model can be "instantiated" into real resource models
+ across multiple different bookings.
+ """
+
+ # TODO: template might not be a good name because this is a collection of lots of configured resources
+ id = models.AutoField(primary_key=True)
+ name = models.CharField(max_length=300, unique=True)
+ xml = models.TextField()
+ owner = models.ForeignKey(User, null=True, on_delete=models.SET_NULL)
+ lab = models.ForeignKey(Lab, null=True, on_delete=models.SET_NULL, related_name="resourcetemplates")
+ description = models.CharField(max_length=1000, default="")
+ public = models.BooleanField(default=False)
+ hidden = models.BooleanField(default=False)
+
+ def getConfigs(self):
+ return list(self.resourceConfigurations.all())
+
+ def __str__(self):
+ return self.name
+
+
+class ResourceBundle(models.Model):
+ """
+ Collection of Resource objects.
+
+ This is just a way of aggregating all the resources in a booking into a single model.
+ """
+
+ template = models.ForeignKey(ResourceTemplate, on_delete=models.SET_NULL, null=True)
+
+ def __str__(self):
+ if self.template is None:
+ return "Resource bundle " + str(self.id) + " with no template"
+ return "instance of " + str(self.template)
+
+ def get_resources(self):
+ return ResourceQuery.filter(bundle=self)
+
+ def get_resource_with_role(self, role):
+ # TODO
+ pass
+
+
+class ResourceConfiguration(models.Model):
+ """Model to represent a complete configuration for a single physical Resource."""
+
+ id = models.AutoField(primary_key=True)
+ profile = models.ForeignKey(ResourceProfile, on_delete=models.CASCADE)
+ image = models.ForeignKey("Image", on_delete=models.PROTECT)
+ template = models.ForeignKey(ResourceTemplate, related_name="resourceConfigurations", null=True, on_delete=models.CASCADE)
+ is_head_node = models.BooleanField(default=False)
+
+ def __str__(self):
+ return "config with " + str(self.template) + " and image " + str(self.image)
+
+
+def get_default_remote_info():
+ return RemoteInfo.objects.get_or_create(
+ address="default",
+ mac_address="default",
+ password="default",
+ user="default",
+ management_type="default",
+ versions="[default]"
+ )[0].pk
+
+
class Resource(models.Model):
+ """
+ Super class for all hardware resource models.
+
+ Defines methods that must be implemented and common database fields.
+ Any new kind of Resource a lab wants to host (White box switch, traffic generator, etc)
+ should inherit from this class and fulfill the functional interface
+ """
+
class Meta:
abstract = True
+ bundle = models.ForeignKey(ResourceBundle, on_delete=models.SET_NULL, null=True)
+ profile = models.ForeignKey(ResourceProfile, on_delete=models.CASCADE)
+ config = models.ForeignKey(ResourceConfiguration, on_delete=models.SET_NULL, null=True)
+ working = models.BooleanField(default=True)
+ vendor = models.CharField(max_length=100, default="unknown")
+ model = models.CharField(max_length=150, default="unknown")
+ interfaces = models.ManyToManyField("Interface")
+ remote_management = models.ForeignKey("RemoteInfo", default=get_default_remote_info, on_delete=models.SET(get_default_remote_info))
+ labid = models.CharField(max_length=200, default="default_id", unique=True)
+ lab = models.ForeignKey(Lab, on_delete=models.CASCADE)
+
def get_configuration(self, state):
"""
Get configuration of Resource.
@@ -129,38 +259,122 @@ class Resource(models.Model):
def get_interfaces(self):
"""
- Returns a list of interfaces on this resource.
+ Return a list of interfaces on this resource.
+
The ordering of interfaces should be consistent.
"""
raise NotImplementedError("Must implement in concrete Resource classes")
+ def is_reserved(self):
+ """Return True if this Resource is reserved."""
+ raise NotImplementedError("Must implement in concrete Resource classes")
+
+ def same_instance(self, other):
+ """Return True if this Resource is the same instance as other."""
+ raise NotImplementedError("Must implement in concrete Resource classes")
+
+ def save(self, *args, **kwargs):
+ """Assert that labid is unique across all Resource models."""
+ res = ResourceQuery.filter(labid=self.labid)
+ if len(res) > 1:
+ raise ValidationError("Too many resources with labid " + str(self.labid))
+
+ if len(res) == 1:
+ if not self.same_instance(res[0]):
+ raise ValidationError("Too many resources with labid " + str(self.labid))
+ super().save(*args, **kwargs)
-# Generic resource templates
-class GenericResourceBundle(models.Model):
+
+class RemoteInfo(models.Model):
+ address = models.CharField(max_length=15)
+ mac_address = models.CharField(max_length=17)
+ password = models.CharField(max_length=100)
+ user = models.CharField(max_length=100)
+ management_type = models.CharField(max_length=50, default="ipmi")
+ versions = models.CharField(max_length=100) # json serialized list of floats
+
+
+class Server(Resource):
+ """Resource subclass - a basic baremetal server."""
+
+ booked = models.BooleanField(default=False)
+ name = models.CharField(max_length=200, unique=True)
+
+ def __str__(self):
+ return self.name
+
+ def get_configuration(self, state):
+ ipmi = state == ConfigState.NEW
+ power = "off" if state == ConfigState.CLEAN else "on"
+
+ return {
+ "id": self.labid,
+ "image": self.config.image.lab_id,
+ "hostname": self.template.resource.name,
+ "power": power,
+ "ipmi_create": str(ipmi)
+ }
+
+ def get_interfaces(self):
+ return list(self.interfaces.all().order_by('bus_address'))
+
+ def release(self):
+ self.booked = False
+ self.save()
+
+ def reserve(self):
+ self.booked = True
+ self.save()
+
+ def is_reserved(self):
+ return self.booked
+
+ def same_instance(self, other):
+ return isinstance(other, Server) and other.name == self.name
+
+
+class Opsys(models.Model):
id = models.AutoField(primary_key=True)
- name = models.CharField(max_length=300, unique=True)
- xml = models.TextField()
- owner = models.ForeignKey(User, null=True, on_delete=models.SET_NULL)
- lab = models.ForeignKey(Lab, null=True, on_delete=models.SET_NULL)
- description = models.CharField(max_length=1000, default="")
- public = models.BooleanField(default=False)
- hidden = models.BooleanField(default=False)
+ name = models.CharField(max_length=100)
+ sup_installers = models.ManyToManyField("Installer", blank=True)
+
+ def __str__(self):
+ return self.name
- def getResources(self):
- my_resources = []
- for genericResource in self.generic_resources.all():
- my_resources.append(genericResource.getResource())
- return my_resources
+class Image(models.Model):
+ """Model for representing OS images / snapshots of hosts."""
+
+ id = models.AutoField(primary_key=True)
+ lab_id = models.IntegerField() # ID the lab who holds this image knows
+ from_lab = models.ForeignKey(Lab, on_delete=models.CASCADE)
+ name = models.CharField(max_length=200)
+ owner = models.ForeignKey(User, null=True, on_delete=models.SET_NULL)
+ public = models.BooleanField(default=True)
+ host_type = models.ForeignKey(ResourceProfile, on_delete=models.CASCADE)
+ description = models.TextField()
+ os = models.ForeignKey(Opsys, null=True, on_delete=models.CASCADE)
def __str__(self):
return self.name
+ def in_use(self):
+ for resource in ResourceQuery.filter(config__image=self):
+ if resource.is_reserved():
+ return True
+
+ return False
+
+
+"""
+Networking configuration models
+"""
+
class Network(models.Model):
id = models.AutoField(primary_key=True)
name = models.CharField(max_length=100)
- bundle = models.ForeignKey(GenericResourceBundle, on_delete=models.CASCADE, related_name="networks")
+ bundle = models.ForeignKey(ResourceTemplate, on_delete=models.CASCADE, related_name="networks")
is_public = models.BooleanField()
def __str__(self):
@@ -205,65 +419,21 @@ class Vlan(models.Model):
return str(self.vlan_id) + ("_T" if self.tagged else "")
-class ConfigState:
- NEW = 0
- RESET = 100
- CLEAN = 200
-
-
-class GenericResource(models.Model):
- bundle = models.ForeignKey(GenericResourceBundle, related_name='generic_resources', on_delete=models.CASCADE)
- hostname_validchars = RegexValidator(regex=r'(?=^.{1,253}$)(?=(^([A-Za-z0-9\-\_]{1,62}\.)*[A-Za-z0-9\-\_]{1,63}$))', message="Enter a valid hostname. Full domain name may be 1-253 characters, each hostname 1-63 characters (including suffixed dot), and valid characters for hostnames are A-Z, a-z, 0-9, hyphen (-), and underscore (_)")
- name = models.CharField(max_length=200, validators=[hostname_validchars])
-
- def getResource(self):
- # TODO: This will have to be dealt with
- return self.generic_host
-
- def __str__(self):
- return self.name
-
- def validate(self):
- validname = re.compile(r'(?=^.{1,253}$)(?=(^([A-Za-z0-9\-\_]{1,62}\.)*[A-Za-z0-9\-\_]{1,63}$))')
- if not validname.match(self.name):
- return "Enter a valid hostname. Full domain name may be 1-253 characters, each hostname 1-63 characters (including suffixed dot), and valid characters for hostnames are A-Z, a-z, 0-9, hyphen (-), and underscore (_)"
- else:
- return None
-
-
-# Host template
-class GenericHost(models.Model):
- id = models.AutoField(primary_key=True)
- profile = models.ForeignKey(HostProfile, on_delete=models.CASCADE)
- resource = models.OneToOneField(GenericResource, related_name='generic_host', on_delete=models.CASCADE)
-
- def __str__(self):
- return self.resource.name
-
-
-# Physical, actual resources
-class ResourceBundle(Resource):
- template = models.ForeignKey(GenericResourceBundle, on_delete=models.SET_NULL, null=True)
-
- def __str__(self):
- if self.template is None:
- return "Resource bundle " + str(self.id) + " with no template"
- return "instance of " + str(self.template)
-
- def get_host(self, role="Jumphost"):
- return Host.objects.filter(bundle=self, config__is_head_node=True).first() # should only ever be one, but it is not an invariant in the models
-
-
-class GenericInterface(models.Model):
+class InterfaceConfiguration(models.Model):
id = models.AutoField(primary_key=True)
profile = models.ForeignKey(InterfaceProfile, on_delete=models.CASCADE)
- host = models.ForeignKey(GenericHost, on_delete=models.CASCADE, related_name='generic_interfaces')
+ resource_config = models.ForeignKey(ResourceConfiguration, on_delete=models.CASCADE, related_name='interface_configs')
connections = models.ManyToManyField(NetworkConnection)
def __str__(self):
return "type " + str(self.profile) + " on host " + str(self.host)
+"""
+OPNFV / Software configuration models
+"""
+
+
class Scenario(models.Model):
id = models.AutoField(primary_key=True)
name = models.CharField(max_length=300)
@@ -281,38 +451,16 @@ class Installer(models.Model):
return self.name
-class Opsys(models.Model):
- id = models.AutoField(primary_key=True)
- name = models.CharField(max_length=100)
- sup_installers = models.ManyToManyField(Installer, blank=True)
-
- def __str__(self):
- return self.name
-
-
class NetworkRole(models.Model):
name = models.CharField(max_length=100)
network = models.ForeignKey(Network, on_delete=models.CASCADE)
-class ConfigBundle(models.Model):
- id = models.AutoField(primary_key=True)
- owner = models.ForeignKey(User, on_delete=models.CASCADE)
- name = models.CharField(max_length=200, unique=True)
- description = models.CharField(max_length=1000, default="")
- bundle = models.ForeignKey(GenericResourceBundle, null=True, on_delete=models.CASCADE)
- public = models.BooleanField(default=False)
- hidden = models.BooleanField(default=False)
-
- def __str__(self):
- return self.name
-
-
class OPNFVConfig(models.Model):
id = models.AutoField(primary_key=True)
installer = models.ForeignKey(Installer, on_delete=models.CASCADE)
scenario = models.ForeignKey(Scenario, on_delete=models.CASCADE)
- bundle = models.ForeignKey(ConfigBundle, related_name="opnfv_config", on_delete=models.CASCADE)
+ template = models.ForeignKey(ResourceTemplate, related_name="opnfv_config", on_delete=models.CASCADE)
networks = models.ManyToManyField(NetworkRole)
name = models.CharField(max_length=300, blank=True, default="")
description = models.CharField(max_length=600, blank=True, default="")
@@ -330,105 +478,14 @@ class OPNFVRole(models.Model):
return self.name
-class Image(models.Model):
- """Model for representing OS images / snapshots of hosts."""
-
- id = models.AutoField(primary_key=True)
- lab_id = models.IntegerField() # ID the lab who holds this image knows
- from_lab = models.ForeignKey(Lab, on_delete=models.CASCADE)
- name = models.CharField(max_length=200)
- owner = models.ForeignKey(User, null=True, on_delete=models.SET_NULL)
- public = models.BooleanField(default=True)
- host_type = models.ForeignKey(HostProfile, on_delete=models.CASCADE)
- description = models.TextField()
- os = models.ForeignKey(Opsys, null=True, on_delete=models.CASCADE)
-
- def __str__(self):
- return self.name
-
- def in_use(self):
- return Host.objects.filter(booked=True, config__image=self).exists()
-
-
def get_sentinal_opnfv_role():
return OPNFVRole.objects.get_or_create(name="deleted", description="Role was deleted.")
-class HostConfiguration(models.Model):
- """Model to represent a complete configuration for a single physical host."""
-
- id = models.AutoField(primary_key=True)
- host = models.ForeignKey(GenericHost, related_name="configuration", on_delete=models.CASCADE)
- image = models.ForeignKey(Image, on_delete=models.PROTECT)
- bundle = models.ForeignKey(ConfigBundle, related_name="hostConfigurations", null=True, on_delete=models.CASCADE)
- is_head_node = models.BooleanField(default=False)
-
- def __str__(self):
- return "config with " + str(self.host) + " and image " + str(self.image)
-
-
-class HostOPNFVConfig(models.Model):
- role = models.ForeignKey(OPNFVRole, related_name="host_opnfv_configs", on_delete=models.CASCADE)
- host_config = models.ForeignKey(HostConfiguration, related_name="host_opnfv_config", on_delete=models.CASCADE)
- opnfv_config = models.ForeignKey(OPNFVConfig, related_name="host_opnfv_config", on_delete=models.CASCADE)
-
-
-class RemoteInfo(models.Model):
- address = models.CharField(max_length=15)
- mac_address = models.CharField(max_length=17)
- password = models.CharField(max_length=100)
- user = models.CharField(max_length=100)
- management_type = models.CharField(max_length=50, default="ipmi")
- versions = models.CharField(max_length=100) # json serialized list of floats
-
-
-def get_default_remote_info():
- return RemoteInfo.objects.get_or_create(
- address="default",
- mac_address="default",
- password="default",
- user="default",
- management_type="default",
- versions="[default]"
- )[0].pk
-
-
-# Concrete host, actual machine in a lab
-class Host(Resource):
- template = models.ForeignKey(GenericHost, on_delete=models.SET_NULL, null=True)
- booked = models.BooleanField(default=False)
- name = models.CharField(max_length=200, unique=True)
- bundle = models.ForeignKey(ResourceBundle, related_name='hosts', on_delete=models.SET_NULL, null=True)
- config = models.ForeignKey(HostConfiguration, null=True, related_name="configuration", on_delete=models.SET_NULL)
- labid = models.CharField(max_length=200, default="default_id")
- profile = models.ForeignKey(HostProfile, on_delete=models.CASCADE)
- lab = models.ForeignKey(Lab, on_delete=models.CASCADE)
- working = models.BooleanField(default=True)
- vendor = models.CharField(max_length=100, default="unknown")
- model = models.CharField(max_length=150, default="unknown")
- remote_management = models.ForeignKey(RemoteInfo, default=get_default_remote_info, on_delete=models.SET(get_default_remote_info))
-
- def __str__(self):
- return self.name
-
- def get_configuration(self, state):
- ipmi = state == ConfigState.NEW
- power = "off" if state == ConfigState.CLEAN else "on"
-
- return {
- "id": self.labid,
- "image": self.config.image.lab_id,
- "hostname": self.template.resource.name,
- "power": power,
- "ipmi_create": str(ipmi)
- }
-
- def release(self):
- self.booked = False
- self.save()
-
- def get_interfaces(self):
- return list(self.interfaces.all().order_by('bus_address'))
+class ResourceOPNFVConfig(models.Model):
+ role = models.ForeignKey(OPNFVRole, related_name="resource_opnfv_configs", on_delete=models.CASCADE)
+ resource_config = models.ForeignKey(ResourceConfiguration, related_name="resource_opnfv_config", on_delete=models.CASCADE)
+ opnfv_config = models.ForeignKey(OPNFVConfig, related_name="resource_opnfv_config", on_delete=models.CASCADE)
class Interface(models.Model):
@@ -436,15 +493,33 @@ class Interface(models.Model):
mac_address = models.CharField(max_length=17)
bus_address = models.CharField(max_length=50)
config = models.ManyToManyField(Vlan)
- host = models.ForeignKey(Host, on_delete=models.CASCADE, related_name='interfaces')
+ acts_as = models.OneToOneField(InterfaceConfiguration, null=True, on_delete=models.SET_NULL)
profile = models.ForeignKey(InterfaceProfile, on_delete=models.CASCADE)
def __str__(self):
return self.mac_address + " on host " + str(self.host)
+"""
+Some Enums for dealing with global constants.
+"""
+
+
class OPNFV_SETTINGS():
"""This is a static configuration class."""
# all the required network types in PDF/IDF spec
NETWORK_ROLES = ["public", "private", "admin", "mgmt"]
+
+
+class ConfigState:
+ NEW = 0
+ RESET = 100
+ CLEAN = 200
+
+
+RESOURCE_TYPES = [Server]
+
+
+class ResourceQuery(AbstractModelQuery):
+ model_list = [Server]
diff --git a/src/resource_inventory/pdf_templater.py b/src/resource_inventory/pdf_templater.py
index 51e3746..6844b09 100644
--- a/src/resource_inventory/pdf_templater.py
+++ b/src/resource_inventory/pdf_templater.py
@@ -10,7 +10,7 @@
from django.template.loader import render_to_string
import booking
-from resource_inventory.models import Host, InterfaceProfile
+from resource_inventory.models import Server, InterfaceProfile
class PDFTemplater:
@@ -66,7 +66,7 @@ class PDFTemplater:
)
jumphost = booking.resource.hosts.get(config=jumphost_opnfv_config.host_config)
else: # if there is no opnfv config, use headnode
- jumphost = Host.objects.filter(
+ jumphost = Server.objects.filter(
bundle=booking.resource,
config__is_head_node=True
).first()
@@ -85,7 +85,7 @@ class PDFTemplater:
def get_pdf_nodes(cls, booking):
"""Return a list of all the "nodes" (every host except jumphost)."""
pdf_nodes = []
- nodes = set(Host.objects.filter(bundle=booking.resource))
+ nodes = set(Server.objects.filter(bundle=booking.resource))
nodes.discard(cls.get_jumphost(booking))
for node in nodes:
diff --git a/src/resource_inventory/resource_manager.py b/src/resource_inventory/resource_manager.py
index 242d21a..e14218b 100644
--- a/src/resource_inventory/resource_manager.py
+++ b/src/resource_inventory/resource_manager.py
@@ -8,17 +8,10 @@
##############################################################################
import re
-from dashboard.exceptions import (
- ResourceExistenceException,
- ResourceAvailabilityException,
- ResourceProvisioningException,
- ModelValidationException,
-)
+from dashboard.exceptions import ResourceAvailabilityException
+
from resource_inventory.models import (
- Host,
- HostConfiguration,
ResourceBundle,
- HostProfile,
Network,
Vlan,
PhysicalNetwork,
@@ -38,32 +31,22 @@ class ResourceManager:
ResourceManager.instance = ResourceManager()
return ResourceManager.instance
- def getAvailableHostTypes(self, lab):
- hostset = Host.objects.filter(lab=lab).filter(booked=False).filter(working=True)
- hostprofileset = HostProfile.objects.filter(host__in=hostset, labs=lab)
- return set(hostprofileset)
-
- def hostsAvailable(self, grb):
+ def templateIsReservable(self, resource_template):
"""
- Check if the given GenericResourceBundle is available.
+ Check if the required resources to reserve this template is available.
No changes to the database
"""
# count up hosts
profile_count = {}
- for host in grb.getResources():
- if host.profile not in profile_count:
- profile_count[host.profile] = 0
- profile_count[host.profile] += 1
+ for config in resource_template.getConfigs():
+ if config.profile not in profile_count:
+ profile_count[config.profile] = 0
+ profile_count[config.profile] += 1
# check that all required hosts are available
for profile in profile_count.keys():
- available = Host.objects.filter(
- booked=False,
- working=True,
- lab=grb.lab,
- profile=profile
- ).count()
+ available = len(profile.get_resources(lab=resource_template.lab, unreserved=True))
needed = profile_count[profile]
if available < needed:
return False
@@ -71,8 +54,8 @@ class ResourceManager:
# public interface
def deleteResourceBundle(self, resourceBundle):
- for host in Host.objects.filter(bundle=resourceBundle):
- host.release()
+ for resource in resourceBundle.get_resources():
+ resource.release()
resourceBundle.delete()
def get_vlans(self, genericResourceBundle):
@@ -89,43 +72,32 @@ class ResourceManager:
networks[network.name] = vlan
return networks
- def convertResourceBundle(self, genericResourceBundle, config=None):
+ def instantiateTemplate(self, resource_template, config=None):
"""
- Convert a GenericResourceBundle into a ResourceBundle.
+ Convert a ResourceTemplate into a ResourceBundle.
- Takes in a genericResourceBundle and reserves all the
+ Takes in a ResourceTemplate and reserves all the
Resources needed and returns a completed ResourceBundle.
"""
- resource_bundle = ResourceBundle.objects.create(template=genericResourceBundle)
- generic_hosts = genericResourceBundle.getResources()
- physical_hosts = []
+ resource_bundle = ResourceBundle.objects.create(template=resource_template)
+ res_configs = resource_template.getConfigs()
+ resources = []
- vlan_map = self.get_vlans(genericResourceBundle)
+ vlan_map = self.get_vlans(resource_template)
- for generic_host in generic_hosts:
- host_config = None
- if config:
- host_config = HostConfiguration.objects.get(bundle=config, host=generic_host)
+ for config in res_configs:
try:
- physical_host = self.acquireHost(generic_host, genericResourceBundle.lab.name)
- except ResourceAvailabilityException:
- self.fail_acquire(physical_hosts, vlan_map, genericResourceBundle)
- raise ResourceAvailabilityException("Could not provision hosts, not enough available")
- try:
- physical_host.bundle = resource_bundle
- physical_host.template = generic_host
- physical_host.config = host_config
- physical_hosts.append(physical_host)
-
- self.configureNetworking(physical_host, vlan_map)
- except Exception:
- self.fail_acquire(physical_hosts, vlan_map, genericResourceBundle)
- raise ResourceProvisioningException("Network configuration failed.")
- try:
- physical_host.save()
- except Exception:
- self.fail_acquire(physical_hosts, vlan_map, genericResourceBundle)
- raise ModelValidationException("Saving hosts failed")
+ phys_res = self.acquireHost(config)
+ phys_res.bundle = resource_bundle
+ phys_res.config = config
+ resources.append(phys_res)
+
+ self.configureNetworking(phys_res, vlan_map)
+ phys_res.save()
+
+ except Exception as e:
+ self.fail_acquire(resources, vlan_map, resource_template)
+ raise e
return resource_bundle
@@ -149,30 +121,27 @@ class ResourceManager:
)
# private interface
- def acquireHost(self, genericHost, labName):
- host_full_set = Host.objects.filter(lab__name__exact=labName, profile=genericHost.profile)
- if not host_full_set.first():
- raise ResourceExistenceException("No matching servers found")
- host_set = host_full_set.filter(booked=False, working=True)
- if not host_set.first():
- raise ResourceAvailabilityException("No unbooked hosts match requested hosts")
- host = host_set.first()
- host.booked = True
- host.template = genericHost
- host.save()
- return host
-
- def releaseNetworks(self, grb, vlan_manager, vlans):
+ def acquireHost(self, resource_config):
+ resources = resource_config.profile.get_resources(lab=resource_config.lab, unreserved=True)
+ try:
+ resource = resources[0] # TODO: should we randomize and 'load balance' the servers?
+ resource.config = resource_config
+ resource.reserve()
+ return resource
+ except IndexError:
+ raise ResourceAvailabilityException("No available resources of requested type")
+
+ def releaseNetworks(self, template, vlans):
+ vlan_manager = template.lab.vlan_manager
for net_name, vlan_id in vlans.items():
- net = Network.objects.get(name=net_name, bundle=grb)
+ net = Network.objects.get(name=net_name, bundle=template)
if(net.is_public):
vlan_manager.release_public_vlan(vlan_id)
else:
vlan_manager.release_vlans(vlan_id)
- def fail_acquire(self, hosts, vlans, grb):
- vlan_manager = grb.lab.vlan_manager
- self.releaseNetworks(grb, vlan_manager, vlans)
+ def fail_acquire(self, hosts, vlans, template):
+ self.releaseNetworks(template, vlans)
for host in hosts:
host.release()