github.com/gophercloud/gophercloud@v1.11.0/openstack/db/v1/flavors/results.go (about)

     1  package flavors
     2  
     3  import (
     4  	"github.com/gophercloud/gophercloud"
     5  	"github.com/gophercloud/gophercloud/pagination"
     6  )
     7  
     8  // GetResult temporarily holds the response from a Get call.
     9  type GetResult struct {
    10  	gophercloud.Result
    11  }
    12  
    13  // Extract provides access to the individual Flavor returned by the Get function.
    14  func (r GetResult) Extract() (*Flavor, error) {
    15  	var s struct {
    16  		Flavor *Flavor `json:"flavor"`
    17  	}
    18  	err := r.ExtractInto(&s)
    19  	return s.Flavor, err
    20  }
    21  
    22  // Flavor records represent (virtual) hardware configurations for server resources in a region.
    23  type Flavor struct {
    24  	// The flavor's unique identifier.
    25  	// Contains 0 if the ID is not an integer.
    26  	ID int `json:"id"`
    27  
    28  	// The RAM capacity for the flavor.
    29  	RAM int `json:"ram"`
    30  
    31  	// The Name field provides a human-readable moniker for the flavor.
    32  	Name string `json:"name"`
    33  
    34  	// Links to access the flavor.
    35  	Links []gophercloud.Link
    36  
    37  	// The flavor's unique identifier as a string
    38  	StrID string `json:"str_id"`
    39  }
    40  
    41  // FlavorPage contains a single page of the response from a List call.
    42  type FlavorPage struct {
    43  	pagination.LinkedPageBase
    44  }
    45  
    46  // IsEmpty determines if a page contains any results.
    47  func (page FlavorPage) IsEmpty() (bool, error) {
    48  	if page.StatusCode == 204 {
    49  		return true, nil
    50  	}
    51  
    52  	flavors, err := ExtractFlavors(page)
    53  	return len(flavors) == 0, err
    54  }
    55  
    56  // NextPageURL uses the response's embedded link reference to navigate to the next page of results.
    57  func (page FlavorPage) NextPageURL() (string, error) {
    58  	var s struct {
    59  		Links []gophercloud.Link `json:"flavors_links"`
    60  	}
    61  	err := page.ExtractInto(&s)
    62  	if err != nil {
    63  		return "", err
    64  	}
    65  	return gophercloud.ExtractNextURL(s.Links)
    66  }
    67  
    68  // ExtractFlavors provides access to the list of flavors in a page acquired from the List operation.
    69  func ExtractFlavors(r pagination.Page) ([]Flavor, error) {
    70  	var s struct {
    71  		Flavors []Flavor `json:"flavors"`
    72  	}
    73  	err := (r.(FlavorPage)).ExtractInto(&s)
    74  	return s.Flavors, err
    75  }