Shulou(Shulou.com)05/31 Report--

Today, I will talk to you about how to analyze the overall file structure of nova source code, which may not be well understood by many people. in order to make you understand better, the editor has summarized the following contents for you. I hope you can get something according to this article.

The following is I read the Grizzly version of OpenStack source code, finishing a brief Nova module source code structure.

/ bin:Nova startup scripts for each service

/ nova/api/auth.py: middleware for general authentication, accessing keystone

/ nova/api/manager.py:Metadata Management initialization

Implementation of / nova/api/sizelimit.py:limit middleware

/ nova/api/validator.py: verification of some parameters

/ nova/api/ec2/__init__.py:Amazon EC2 API binding, the starting point for routing EC2 requests

/ nova/api/ec2/apirequest.py:APIRequest class

/ nova/api/ec2/cloud.py: cloud controller: executes a call to EC2 REST API, which is dispatched to other nodes through AMQP RPC

/ nova/api/ec2/ec2utils.py:ec2 related utilities

/ nova/api/ec2/faults.py: catches an exception and returns a REST response

/ nova/api/ec2/inst_state.py: setting of status information

/ nova/api/metadata/__init__.py:Nova metadata service

/ nova/api/metadata/base.py: information related to instance metadata

/ nova/api/metadata/handler.py:Metadata request handler

/ nova/api/metadata/password.py: metadata-related password handler

/ WSGI middleware of nova/api/openstack/__init__.py:OpenStack API controller

/ nova/api/openstack/auth.py: authentication

/ nova/api/openstack/common.py: some general management programs

/ nova/api/openstack/extensions.py: module extension related

/ nova/api/openstack/urlmap.py:urlmap related

Some applications of / nova/api/openstack/wsgi.py:wsgi

/ nova/api/openstack/xmlutil.py: utility for handling xml

/ WSGI middleware of nova/api/openstack/compute/__init__.py:OpenStack Compute API

/ nova/api/openstack/compute/consoles.py:OpenStack Compute API console

/ nova/api/openstack/compute/extensions.py: extended management

/ flavors controller for nova/api/openstack/compute/flavors.py:OpenStack Compute API

/ nova/api/openstack/compute/image_metadata.py:OpenStack Compute API mirror source file API controller

/ nova/api/openstack/compute/images.py: basic controller for retrieving / displaying mirrors

/ nova/api/openstack/compute/ips.py:OpenStack API's service IP address API controller

/ nova/api/openstack/compute/limits.py:limit middleware related

/ nova/api/openstack/compute/server_metadata.py:OpenStack API's service metadata API controller

Template class of / nova/api/openstack/compute/servers.py:server and API implementation of control class

/ nova/api/openstack/compute/versions.py: version dependent

/ nova/api/openstack/compute/contrib/__init__.py:

/ nova/api/openstack/compute/contrib/admin_actions.py: defines several operations to manage virtual machines that run with administrator privileges

/ nova/api/openstack/compute/contrib/agents.py: mainly implements the processing of agents

Note: agent mainly refers to the agent of guest. Hosts can use agents to access disk files, configure networks, and run other programs or scripts on the guest system (guest).

/ nova/api/openstack/compute/contrib/aggregates.py: administrator Aggregate API operation extension

/ nova/api/openstack/compute/contrib/attach_interfaces.py: instance interface extension; (you should see it)

/ nova/api/openstack/compute/contrib/availability_zone.py: a collection of API that processes the available zone

/ nova/api/openstack/compute/contrib/baremetal_nodes.py: bare metal node administrator operates API extension

/ nova/api/openstack/compute/contrib/cells.py:cell operation extension API

/ nova/api/openstack/compute/contrib/certificates.py:OpenStack API x509 digital authentication operation API

/ nova/api/openstack/compute/contrib/cloudpipe_update.py: update vpn ip/port for cloudpipe instance processing

/ nova/api/openstack/compute/contrib/cloudpipe.py: connect vlan to the public network through cloudpipes

/ nova/api/openstack/compute/contrib/config_drive.py: configuration-driven extension

/ nova/api/openstack/compute/contrib/console_output.py: console output control

/ nova/api/openstack/compute/contrib/consoles.py: console controls API

/ nova/api/openstack/compute/contrib/coverage_ext.py:Coverage reports API controller

/ nova/api/openstack/compute/contrib/createserverext.py: extend to establish support for service v1.1 API

/ nova/api/openstack/compute/contrib/deferred_delete.py: deferred deletion of instance extension

/ nova/api/openstack/compute/contrib/disk_config.py: disk configuration extension API

/ nova/api/openstack/compute/contrib/evacuate.py: allows administrators to migrate a service from a failed host to a new host

/ nova/api/openstack/compute/contrib/extended_availability_zone.py: available zone status API extension

/ nova/api/openstack/compute/contrib/extended_ips.py: extend the IP API extension

/ nova/api/openstack/compute/contrib/extended_server_attributes.py: extend service properties API extension

/ nova/api/openstack/compute/contrib/extended_status.py: API that extends the status of the instance

/ nova/api/openstack/compute/contrib/fixed_ips.py: fixed IP operation API

Flavor access operation API of / nova/api/openstack/compute/contrib/flavor_access.py:OpenStack API

/ flavor of nova/api/openstack/compute/contrib/flavor_disabled.py:OpenStack API disables access to API

/ flavor Rxtx API of nova/api/openstack/compute/contrib/flavor_rxtx.py:OpenStack API

Flavor Swap API extension of / nova/api/openstack/compute/contrib/flavor_swap.py:OpenStack API

/ flavor extra data extension for nova/api/openstack/compute/contrib/flavorextradata.py:OpenStack API

/ nova/api/openstack/compute/contrib/flavorextraspecs.py: extension of additional specifications for instance types

/ nova/api/openstack/compute/contrib/flavormanage.py:flavor Management API

/ nova/api/openstack/compute/contrib/floating_ip_dns.py: floating IP DNS support

/ nova/api/openstack/compute/contrib/floating_ip_pools.py: floating IP pool

/ nova/api/openstack/compute/contrib/floating_ips_bulk.py: batch floating IP support

/ nova/api/openstack/compute/contrib/floating_ips.py: floating IP controller

Implementation of / nova/api/openstack/compute/contrib/fping.py:Fping controller

/ nova/api/openstack/compute/contrib/hide_server_addresses.py: hide the service address in a specific state

/ nova/api/openstack/compute/contrib/hosts.py: host management extension

/ nova/api/openstack/compute/contrib/hypervisors.py: extension of hypervisor management

/ nova/api/openstack/compute/contrib/image_size.py: image size management

/ nova/api/openstack/compute/contrib/instance_actions.py: management of instance operations

/ nova/api/openstack/compute/contrib/instance_usage_audit_log.py: logging controller for virtual machine instance application

/ nova/api/openstack/compute/contrib/keypairs.py: key pair API management extension

/ nova/api/openstack/compute/contrib/multinic.py: multiple network support extensions

/ nova/api/openstack/compute/contrib/networks_associate.py:Network Association support

/ nova/api/openstack/compute/contrib/os_networks.py: administrator privileges network management extension

/ nova/api/openstack/compute/contrib/os_tenant_networks.py: extension of tenant-based network management

/ nova/api/openstack/compute/contrib/quota_classes.py: disk quota class management support

/ nova/api/openstack/compute/contrib/quotas.py: disk quota management support

/ nova/api/openstack/compute/contrib/rescue.py: extension of instance rescue mode

/ nova/api/openstack/compute/contrib/scheduler_hints.py: pass any key-value pair to the scheduler

/ nova/api/openstack/compute/contrib/security_group_default_rules.py: support for default rules of security groups

/ nova/api/openstack/compute/contrib/security_groups.py: extended support for security groups

/ nova/api/openstack/compute/contrib/server_diagnostics.py: server diagnostics support

Support for / nova/api/openstack/compute/contrib/server_password.py:server password extension

/ nova/api/openstack/compute/contrib/server_start_stop.py: API support for starting and stopping virtual machine instances

/ nova/api/openstack/compute/contrib/services.py: support for service extensions

/ nova/api/openstack/compute/contrib/simple_tenant_usage.py: simple extension of tenant usage

/ nova/api/openstack/compute/contrib/used_limits.py: data with limited use of resources

/ nova/api/openstack/compute/contrib/virtual_interfaces.py: virtual interface extension

/ nova/api/openstack/compute/contrib/volumes.py: extension of volume-related management

/ nova/cells/driver.py:cell communication driver base class

/ nova/cells/manager.py:cell service management API, which mainly defines the class CellsManager

/ nova/cells/messaging.py:cell communication module

Global configuration options for / nova/cells/opts.py:cell

/ nova/cells/rpc_driver.py:cell RPC communication driver, realize cell communication through RPC

/ nova/cells/rpcapi.py:nova-cells RPC client API to communicate with nova-cells services, mainly Cell RPC API client classes

/ nova/cells/scheduler.py:cell scheduler implementation

/ nova/cells/state.py:cell state management implementation, including a CellState class (which holds information for a specific cell) and a CellStateManager class (cell state management class)

Practical method of / nova/cells/utils.py:cell

/ nova/cert/manager.py:x509 digital certification certificate management, mainly including a class CertManager (authentication management class)

/ nova/cert/rpcapi.py: client API of authentication management RPC

/ nova/cloudpipe/pipelib.py:CloudPipe-create a user data load zip file and start an instance based on it

/ nova/compute/api.py: processes all requests for computing resources

/ nova/compute/cells_api.py: service operation API performed through cell

/ nova/compute/instance_actions.py: all possible actions on an instance

/ nova/compute/instance_types.py: operation on the built-in properties of the instance

/ nova/compute/manager.py: processing of all processes related to the instance (guest virtual machine)

ComputeVirtAPI class: calculating VirtAPI

ComputeManager class: manages the running process of an instance from establishment to destruction

/ nova/compute/power_state.py:Power state represents the state when virt driver is called from a specific domain

/ nova/compute/resource_tracker.py: track the resources of computing hosts, such as memory and disks, and manage instance resources

/ nova/compute/rpcapi.py:compute RPC API client

ComputeAPI class: client class of compute rpc API

SecurityGroupAPI class: security group RPC API client class

/ nova/compute/stats.py: the operation used to update the workload statistics of compute nodes

/ nova/compute/task_states.py: the task state that the instance may be in

/ nova/compute/utils.py: calculation-related tools and auxiliary methods

/ nova/compute/vm_mode.py: the possible virtual machine mode of the instance

/ nova/compute/vm_states.py: the possible virtual machine status of the instance

/ nova/conductor/__init__.py: here's a brief explanation of nova conductor services. In the Grizzly version of Nova, nova-conductor is a new service layer on top of nova-compute, which makes nova-compute no longer directly access the database.

/ nova/conductor/api.py: processes all conductor service requests

LocalAPI class: the local version of conductor API, which handles updates to the local database rather than through RPC

API class: update the database and realize the management of Conductor through RPC and ConductorManager classes

/ nova/conductor/manager.py: handles database requests from other nova services

Note: the main implementation is the ConductorManager class

/ nova/conductor/rpcapi.py:conductor RPC API client

/ nova/console/api.py: processes ConsoleProxy API requests

/ nova/console/fake.py: simulate ConsoleProxy driver for testing

/ nova/console/manager.py: console proxy service

/ nova/console/rpcapi.py:console RPC API client

/ nova/console/vmrc_manager.py:VMRC console Management

/ nova/console/vmrc.py:VMRC console driver

/ nova/console/websocketproxy.py: Websocket proxy compatible with OpenStack Nova

/ nova/console/xvp.py:Xenserver VNC Proxy driver

/ nova/consoleauth/__init__.py: console authentication module

/ nova/consoleauth/manager.py: authentication group component of the console

/ nova/consoleauth/rpcapi.py: console authenticates the client of rpc API

Abstraction of / nova/db/__init__.py:Nova database

/ nova/db/api.py: define database access interface

/ nova/db/base.py: modular database access base class is required

/ nova/db/migration.py: database setup and migration commands

/ execution of nova/db/sqlalchemy/api.py:SQLAlchemy backend

SQLAlchemy template for / nova/db/sqlalchemy/models.py:nova data

/ nova/db/sqlalchemy/types.py: custom SQLAlchemy type

/ nova/db/sqlalchemy/utils.py:SQLAlchemy utility

/ nova/image/glance.py: implementation of mirroring service using Glance as the backend

GlanceClientWrapper class: glance client wrapper class

Including: establish a glance client, call a glance client object to obtain the image image and other methods

GlanceImageService class: this glance mirroring service class provides storage and retrieval of disk mirrored objects within glance.

There are other glance mirroring service methods

/ nova/image/s3.py: get data from S3, establish mirrors and other related methods

/ nova/network/api.py:API class: API for network management through nova-network

/ nova/network/dns_driver.py: define the DNS manager interface

/ nova/network/driver.py: load the network driver

/ nova/network/floating_ips.py:FloatingIP class: implement the function and related management of adding floating IP

Implementation and management of / nova/network/l3.py:L3 network

/ nova/network/ldapdns.py:LdapDNS Management

/ nova/network/linux_net.py:linux applications implement vlans, bridges and iptables rules

/ nova/network/manager.py: establish the IP address and set up the network

RPCAllocateFixedIP class: FlatDCHP setting and VLAN network management

NetworkManager class: a method collection class that implements general network management

FlatManager class: FLAN network management without vlan

FlatDHCPManager class: DHCP FLAT network management

VlanManager class: VLAN network management of DHCP

/ nova/network/minidns.py: DNS driver class for testing

/ nova/network/model.py: define a network template

The Model class: defines the structures necessary for most network models

IP class: an IP address in Nova

FixedIP class: a floating IP in Nova

Route class: an IP route in Nova

Subnet class: an IP route in Nova

Network class: represents the Network parameter in the network

VIF class: virtual network interface

NetworkInfo class: stores and processes network information for an Nova instance

Definition of / nova/network/noop_dns_driver.py:Noop DNS management method

/ nova/network/nova_ipam_lib.py:QuantumNovaIPAMLib class: apply local Nova database to implement Quantum IP address management interface

/ nova/network/rpcapi.py:network RPC API client

/ nova/network/sg.py: implement abstraction of security groups and related API

/ nova/network/quantumv2/__init__.py: get the quantumv2 client

/ nova/network/quantumv2/api.py: access the quantum 2.xAPI interface method collection class

/ nova/network/security_group/openstack_driver.py:OpenStank security group driver related

/ nova/network/security_group/quantum_driver.py:SecurityGroupAPI class: management API related to security group

/ nova/network/security_group/security_group_base.py:SecurityGroupBase class: security group base class

/ nova/objectstore/s3server.py: implement S3 storage service based on local files

/ nova/openstack/common/cliutils.py: command-line utility to verify that the parameters provided for invoking the method are sufficient

/ nova/openstack/common/context.py: implements a class that stores security context information

/ nova/openstack/common/eventlet_backdoor.py:eventlet backdoor program

/ nova/openstack/common/excutils.py: exception-related utilities

/ nova/openstack/common/fileutils.py: file-related utilities

/ nova/openstack/common/gettextutils.py: get text file utility

/ nova/openstack/common/importutils.py: related utilities and helper methods for loading classes

/ nova/openstack/common/jsonutils.py:JSON related utilities

/ nova/openstack/common/local.py:Greenthread local storage

/ nova/openstack/common/lockutils.py: lock-related methods

/ nova/openstack/common/log.py:OpenStack log handler

/ nova/openstack/common/memorycache.py:memcached client interface

/ nova/openstack/common/network_utils.py:network related utilities and auxiliary methods

Parse_host_port method: parses address and default_port into strings in the form of host and port pairs

/ nova/openstack/common/policy.py:policy mechanism is a mechanism used to control the permissions of a User in a Tenant.

/ nova/openstack/common/processutils.py: system-level utilities and auxiliary methods

/ nova/openstack/common/setup.py: some utilities

/ practical methods related to nova/openstack/common/timeutils.py:time

/ practical methods related to nova/openstack/common/uuidutils.py:UUID

/ nova/openstack/common/version.py: version information

/ nova/openstack/common/db/api.py: back-end support for multi-DB API

/ nova/openstack/common/db/exception.py:DB-related custom exceptions

/ nova/openstack/common/db/sqlalchemy/models.py:SQLAlchemy template

Session handling of / nova/openstack/common/db/sqlalchemy/session.py:SQLAlchemy backend

/ nova/openstack/common/db/sqlalchemy/utils.py: implementation of paging query

/ API implemented by nova/openstack/common/notifier/api.py:notifier (notification) function

/ nova/openstack/common/notifier/log_notifier.py: implement a deterministic system logger

/ nova/openstack/common/notifier/rabbit_notifier.py: in the Grizzly version, rabbit is no longer used to send notifications, but rpc_notifier is used to send notifications, prompting to go to the relevant method

/ nova/openstack/common/notifier/rpc_notifier.py: send a notification via RPC

/ nova/openstack/common/notifier/rpc_notifier2.py: send a notification via RPC

/ nova/openstack/common/plugin/callbackplugin.py: the callback function of the management plug-in

/ nova/openstack/common/plugin/plugin.py: add plug-ins and define interfaces for OpenStack

/ nova/openstack/common/plugin/pluginmanager.py: plug-in related management

/ nova/openstack/common/rootwrap/filters.py: implementation of various filters on the command line

/ nova/openstack/common/rpc/__init__.py: abstract implementation of remote procedure call (rpc)

/ nova/openstack/common/rpc/amqp.py: code sharing between AMQP based on openstack.common.rpc, implementation of AMQP

Code implementation of / nova/openstack/common/rpc/dispatcher.py:RPC message scheduling

/ nova/openstack/common/rpc/impl_fake.py: virtual RPC implementation that calls proxy methods directly without queuing

/ nova/openstack/common/rpc/impl_kombu.py: the default RPC implementation of the system

One of the / nova/openstack/common/rpc/impl_qpid.py:RPC implementations

One of the / nova/openstack/common/rpc/impl_zmq.py:RPC implementations

/ nova/openstack/common/rpc/matchmaker.py:MatchMaker class

Helper classes for / nova/openstack/common/rpc/proxy.py:RPC client

/ nova/openstack/common/rpc/service.py: the service object running on the host host

/ nova/scheduler/__init__.py: the function of this module is to pick a compute node to run a virtual machine instance

/ nova/scheduler/baremetal_host_manager.py: manages hosts in the current domain

/ nova/scheduler/chance.py: random scheduling implementation

/ nova/scheduler/driver.py: scheduling base class that all schedulers should inherit

/ nova/scheduler/filter_scheduler.py: this FilterScheduler class is to create a local instance

We can customize the scheduler by developing our own host filter (Host Filters) and weight function (Weighing Functions).

/ nova/scheduler/host_manager.py: manages hosts in the current domain

/ nova/scheduler/multi.py: this scheduler was originally used to handle the relationship between calculations and volumes

Now for openstack extensions, use nova Scheduler to schedule requirements to compute nodes

/ nova/scheduler/rpcapi.py: the scheduler manages the client of the RPC API

/ nova/scheduler/scheduler_options.py:SchedulerOptions detects changes in a local json file and loads it if necessary

This file is converted to a data structure and passed to filtering and weight functions

It can be set dynamically.

/ nova/scheduler/filters/__init__.py: scheduling host filter

Definition and implementation of / nova/scheduler/filters/aggregate_instance_extra_specs.py:AggregateInstanceExtraSpecsFilter host filter

/ nova/scheduler/filters/aggregate_multitenancy_isolation.py: implements isolation of tenants in specific aggregations

/ nova/scheduler/filters/all_hosts_filter.py: returns all host host without filtering

/ nova/scheduler/filters/availability_zone_filter.py: filter host host by available zone

/ nova/scheduler/filters/compute_capabilities_filter.py:ComputeCapabilitiesFilter host filter implementation

/ nova/scheduler/filters/compute_filter.py: filtering of active compute nodes

/ nova/scheduler/filters/core_filter.py: host CPU filter based on core host utilization

/ nova/scheduler/filters/disk_filter.py: host host filtering based on disk utilization

/ nova/scheduler/filters/extra_specs_ops.py: setting of some parameters

/ nova/scheduler/filters/image_props_filter.py: filter compute node hosts by matching instance image attributes

/ nova/scheduler/filters/io_ops_filter.py: filter out the host host with too many Icano operations

/ nova/scheduler/filters/isolated_hosts_filter.py:IsolatedHostsFilter filter implementation

/ nova/scheduler/filters/num_instances_filter.py: filter out host host that already has too many instances

/ nova/scheduler/filters/ram_filter.py: only RAM host host with sufficient availability is returned

/ nova/scheduler/filters/retry_filter.py: skip nodes that have been tried

/ nova/scheduler/filters/trusted_filter.py: host host filtering based on trusted computing pool

Implementation of / nova/scheduler/filters/type_filter.py:TypeAffinityFilter filter, which does not allow more than one type of virtual machine to run on a host

/ nova/scheduler/weights/__init__.py: host weight in the scheduler

/ nova/scheduler/weights/least_cost.py:Least Cost is an algorithm for selecting hosts in the scheduler

/ nova/scheduler/weights/ram.py:RAM weight

/ nova/storage/linuxscsi.py: general linuxscsi subsystem utility

/ nova/virt/configdrive.py: build configuration driver

/ nova/virt/event.py: notification from the hypervisor asynchronous event

/ nova/virt/fake.py: a virtual hypervisor+api for testing

/ nova/virt/images.py: handle virtual machine disk mirroring

/ nova/virt/netutils.py: network-related utilities that support libvirt connections

/ nova/virt/storage_users.py: related to instance storage

/ nova/virt/virtapi.py:Virt API Abstract Class

/ nova/virt/libvirt/blockinfo.py: processing block device information and block device mapping

/ nova/virt/libvirt/config.py:libvirt object configuration

/ nova/virt/libvirt/driver.py: the implementation of connecting to the hypervisor through libvirt, and the implementation of related management functions

/ nova/virt/libvirt/imagebackend.py: realize the management operation of backend image through libvirt

/ nova/virt/libvirt/utils.py:libvirt related utilities

/ nova/virt/libvirt/volume_nfs.py: outdated implementation that is no longer applied

/ nova/virt/libvirt/volume.py:libvirt Volume driver implementation

/ nova/virt/disk/__init__.py: practices on disk include: redefining size, file system establishment, file injection, etc.

/ nova/virt/disk/api.py: provides methods for adjusting, repartitioning, and modifying disk images, as well as file injection

/ nova/virt/disk/mount/__init__.py: supports mounting disk mirroring to the host file system

/ nova/virt/disk/mount/api.py: virtual image files can be mounted.

/ nova/virt/disk/mount/loop.py: supports mounting images on loopback devices

/ nova/virt/disk/mount/nbd.py: support mounting disk mirroring to qemu-nbd

/ nova/virt/disk/vfs/__init__.py: virtual file system practice

/ nova/virt/disk/vfs/api.py: virtual file system API

/ nova/virt/disk/vfs/guestfs.py: guest virtual file system

/ nova/virt/hyperv/basevolumeutils.py: auxiliary methods of volume management related services and implementation of storage

Constants used in the / nova/virt/hyperv/constants.py:ops class

/ nova/virt/hyperv/driver.py:Hyper-V Nova Compute driver

/ nova/virt/hyperv/hostops.py: the management class of the host operation

/ nova/virt/hyperv/hostutils.py: utility for host operation

/ nova/virt/hyperv/imagecache.py: image caching and management

/ nova/virt/hyperv/livemigrationops.py: real-time migration of VM virtual machine business management class

/ nova/virt/hyperv/livemigrationutils.py: virtual machine instance real-time migration utility

/ nova/virt/hyperv/migrationops.py: migration / resizing operation management class

/ nova/virt/hyperv/networkutils.py: network-related business utility class

/ nova/virt/hyperv/pathutils.py: path-dependent utility

/ nova/virt/hyperv/snapshotops.py: virtual machine snapshot service management class

/ nova/virt/hyperv/vmops.py: basic VM virtual machine business management class

VM virtual machine related business utility class on / nova/virt/hyperv/vmutils.py:Hyper-V

/ nova/virt/hyperv/volumeops.py: store related method management classes (attach, remove, etc.)

/ nova/virt/hyperv/volumeutils.py: volume-related management business auxiliary classes and storage implementation, etc.

/ nova/virt/hyperv/volumeutilsv2.py: related management business auxiliary classes of volumes and storage implementation on Windows Server 2012, etc.

/ nova/__init__.py:Nova HTTP service

/ nova/availability_zones.py: an auxiliary method of available zone

/ nova/context.py: some methods for requesting information context

/ nova/exception.py:Nova basic exception handling, including various exception classes and the exception information hinted in them

/ nova/filters.py: filter support, defining the base class for all filter classes and the base class for handling loaded filter classes

/ nova/manager.py: basic management class

/ nova/notifications.py: a common method of multi-level notification in the system

/ Policy engine of nova/policy.py:Nova

/ nova/quota.py: instance quota and floating ip

/ nova/service.py: a common node base class that runs all services on the host

/ nova/test.py: the base class for unit testing

/ nova/utils.py: utilities and auxiliary methods

/ nova/weights.py: pluggable weight support

A general approach to the work of nova/wsgi.py:WSGI services

After reading the above, do you have any further understanding of how to analyze the overall file structure of nova source code? If you want to know more knowledge or related content, please follow the industry information channel, thank you for your support.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.