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client.go
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client.go
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// Package ccv2 represents a Cloud Controller V2 client.
//
// These sets of packages are still under development/pre-pre-pre...alpha. Use
// at your own risk! Functionality and design may change without warning.
//
// It is currently designed to support Cloud Controller API 2.58.0. However, it
// may include features and endpoints of later API versions.
//
// For more information on the Cloud Controller API see
// https://apidocs.cloudfoundry.org/
//
// Method Naming Conventions
//
// The client takes a '<Action Name><Top Level Endpoint><nth... level
// endpoint><Return Value>' approach to method names. If the <Top Level
// Endpoint> and <Return Value> are similar, they do not need to be repeated.
// If a GUID is required for the <Top Level Endpoint>, the pluralization is
// removed from said endpoint in the method name.
//
// For Example:
// Method Name: GetApplication
// Endpoint: /v2/applications/:guid
// Action Name: GET
// Top Level Endpoint: applications
// Return Value: Application
//
// Method Name: GetServiceInstances
// Endpoint: /v2/service_instances
// Action Name: GET
// Top Level Endpoint: service_instances
// Return Value: []ServiceInstance
//
// Method Name: GetSpaceServiceInstances
// Endpoint: /v2/spaces/:guid/service_instances
// Action Name: GET
// Top Level Endpoint: spaces
// Return Value: []ServiceInstance
//
// Method Name: UpdateRouteApplication
// Endpoint: /v2/routes/:route_guid/apps/:app_guid
// Action Name: PUT
// Top Level Endpoint: routes
// Second Level Endpoint: Application
// Return Value: Route
//
// Method Name: DeleteSpaceJob
// Endpoint: /v2/spaces/:space_guid
// Action Name: DELETE
// Top Level Endpoint: spaces
// Return Value: Job
//
// Use the following table to determine which HTTP Command equates to which
// Action Name:
// HTTP Command -> Action Name
// POST -> Create
// GET -> Get
// PUT -> Update
// DELETE -> Delete
// PATCH -> Patch
//
// Method Locations
//
// Methods exist in the same file as their return type, regardless of which
// endpoint they use.
//
// Error Handling
//
// All error handling that requires parsing the error_code/code returned back
// from the Cloud Controller should be placed in the errorWrapper. Everything
// else can be handled in the individual operations. All errors structs should
// be placed in individual files in the ccerror package.
//
// No inline-relations-depth And summary Endpoints
//
// This package will not ever use 'inline-relations-depth' or the
// '/summary' endpoints for any operations. These requests can be extremely
// taxing on the Cloud Controller and are avoided at all costs. Additionally,
// the objects returned back from these requests can become extremely
// inconsistent across versions and are problematic to deal with in general.
//
// An additional problem that occurs with these endpoints is that lists of 51+
// objects do not get returned by the CC. Example: Summary of Organizations
// includes a list of spaces. If there are 50 spaces, the endpoint returns
// these spaces under the 'spaces' field; if there are 51+, spaces, the
// 'spaces' field is missing from the CC return.
package ccv2
import (
"fmt"
"runtime"
"time"
"code.cloudfoundry.org/cli/api/cloudcontroller"
"github.com/tedsuo/rata"
)
// Warnings are a collection of warnings that the Cloud Controller can return
// back from an API request.
type Warnings []string
// Client is a client that can be used to talk to a Cloud Controller's V2
// Endpoints.
type Client struct {
authorizationEndpoint string
cloudControllerAPIVersion string
cloudControllerURL string
dopplerEndpoint string
logCacheEndpoint string
minCLIVersion string
routingEndpoint string
jobPollingInterval time.Duration
jobPollingTimeout time.Duration
connection cloudcontroller.Connection
router *rata.RequestGenerator
userAgent string
wrappers []ConnectionWrapper
}
// Config allows the Client to be configured
type Config struct {
// AppName is the name of the application/process using the client.
AppName string
// AppVersion is the version of the application/process using the client.
AppVersion string
// JobPollingTimeout is the maximum amount of time a job polls for.
JobPollingTimeout time.Duration
// JobPollingInterval is the wait time between job polls.
JobPollingInterval time.Duration
// Wrappers that apply to the client connection.
Wrappers []ConnectionWrapper
}
// NewClient returns a new Cloud Controller Client.
func NewClient(config Config) *Client {
userAgent := fmt.Sprintf("%s/%s (%s; %s %s)", config.AppName, config.AppVersion, runtime.Version(), runtime.GOARCH, runtime.GOOS)
return &Client{
userAgent: userAgent,
jobPollingInterval: config.JobPollingInterval,
jobPollingTimeout: config.JobPollingTimeout,
wrappers: append([]ConnectionWrapper{newErrorWrapper()}, config.Wrappers...),
}
}