remove mapstructure from blockstorage,cdn,compute,db pkgs
diff --git a/openstack/compute/v2/extensions/bootfromvolume/requests_test.go b/openstack/compute/v2/extensions/bootfromvolume/requests_test.go
index 1c096a9..2359a77 100644
--- a/openstack/compute/v2/extensions/bootfromvolume/requests_test.go
+++ b/openstack/compute/v2/extensions/bootfromvolume/requests_test.go
@@ -32,8 +32,6 @@
         "name": "createdserver",
         "imageRef": "asdfasdfasdf",
         "flavorRef": "performance1-1",
-        "flavorName": "",
-        "imageName": "",
         "block_device_mapping_v2":[
           {
             "uuid":"123456",
@@ -94,8 +92,6 @@
         "name": "createdserver",
         "imageRef": "asdfasdfasdf",
         "flavorRef": "performance1-1",
-        "flavorName": "",
-        "imageName": "",
         "block_device_mapping_v2":[
           {
             "boot_index": "0",
diff --git a/openstack/compute/v2/extensions/defsecrules/results.go b/openstack/compute/v2/extensions/defsecrules/results.go
index 4adfa91..00d0bb5 100644
--- a/openstack/compute/v2/extensions/defsecrules/results.go
+++ b/openstack/compute/v2/extensions/defsecrules/results.go
@@ -1,8 +1,6 @@
 package defsecrules
 
 import (
-	"github.com/mitchellh/mapstructure"
-
 	"github.com/gophercloud/gophercloud"
 	"github.com/gophercloud/gophercloud/openstack/compute/v2/extensions/secgroups"
 	"github.com/gophercloud/gophercloud/pagination"
@@ -29,14 +27,12 @@
 // ExtractDefaultRules returns a slice of DefaultRules contained in a single
 // page of results.
 func ExtractDefaultRules(page pagination.Page) ([]DefaultRule, error) {
-	casted := page.(DefaultRulePage).Body
-	var response struct {
-		Rules []DefaultRule `mapstructure:"security_group_default_rules"`
+	r := page.(DefaultRulePage)
+	var s struct {
+		DefaultRules []DefaultRule `json:"security_group_default_rules"`
 	}
-
-	err := mapstructure.WeakDecode(casted, &response)
-
-	return response.Rules, err
+	err := r.ExtractInto(&s)
+	return s.DefaultRules, err
 }
 
 type commonResult struct {
@@ -55,15 +51,9 @@
 
 // Extract will extract a DefaultRule struct from most responses.
 func (r commonResult) Extract() (*DefaultRule, error) {
-	if r.Err != nil {
-		return nil, r.Err
+	var s struct {
+		DefaultRule DefaultRule `json:"security_group_default_rule"`
 	}
-
-	var response struct {
-		Rule DefaultRule `mapstructure:"security_group_default_rule"`
-	}
-
-	err := mapstructure.WeakDecode(r.Body, &response)
-
-	return &response.Rule, err
+	err := r.ExtractInto(&s)
+	return &s.DefaultRule, err
 }
diff --git a/openstack/compute/v2/extensions/diskconfig/requests_test.go b/openstack/compute/v2/extensions/diskconfig/requests_test.go
index 61057d4..2e3ae18 100644
--- a/openstack/compute/v2/extensions/diskconfig/requests_test.go
+++ b/openstack/compute/v2/extensions/diskconfig/requests_test.go
@@ -25,8 +25,6 @@
 				"name": "createdserver",
 				"imageRef": "asdfasdfasdf",
 				"flavorRef": "performance1-1",
-				"flavorName": "",
-				"imageName": "",
 				"OS-DCF:diskConfig": "MANUAL"
 			}
 		}
diff --git a/openstack/compute/v2/extensions/diskconfig/results.go b/openstack/compute/v2/extensions/diskconfig/results.go
index b05c5b5..1957e12 100644
--- a/openstack/compute/v2/extensions/diskconfig/results.go
+++ b/openstack/compute/v2/extensions/diskconfig/results.go
@@ -1,60 +1,8 @@
 package diskconfig
 
-import (
-	"github.com/mitchellh/mapstructure"
-	"github.com/gophercloud/gophercloud"
-	"github.com/gophercloud/gophercloud/openstack/compute/v2/servers"
-	"github.com/gophercloud/gophercloud/pagination"
-)
+import "github.com/gophercloud/gophercloud/openstack/compute/v2/servers"
 
-func commonExtract(result gophercloud.Result) (*DiskConfig, error) {
-	var resp struct {
-		Server struct {
-			DiskConfig string `mapstructure:"OS-DCF:diskConfig"`
-		} `mapstructure:"server"`
-	}
-
-	err := mapstructure.Decode(result.Body, &resp)
-	if err != nil {
-		return nil, err
-	}
-
-	config := DiskConfig(resp.Server.DiskConfig)
-	return &config, nil
-}
-
-// ExtractGet returns the disk configuration from a servers.Get call.
-func ExtractGet(result servers.GetResult) (*DiskConfig, error) {
-	return commonExtract(result.Result)
-}
-
-// ExtractUpdate returns the disk configuration from a servers.Update call.
-func ExtractUpdate(result servers.UpdateResult) (*DiskConfig, error) {
-	return commonExtract(result.Result)
-}
-
-// ExtractRebuild returns the disk configuration from a servers.Rebuild call.
-func ExtractRebuild(result servers.RebuildResult) (*DiskConfig, error) {
-	return commonExtract(result.Result)
-}
-
-// ExtractDiskConfig returns the DiskConfig setting for a specific server acquired from an
-// servers.ExtractServers call, while iterating through a Pager.
-func ExtractDiskConfig(page pagination.Page, index int) (*DiskConfig, error) {
-	casted := page.(servers.ServerPage).Body
-
-	type server struct {
-		DiskConfig string `mapstructure:"OS-DCF:diskConfig"`
-	}
-	var response struct {
-		Servers []server `mapstructure:"servers"`
-	}
-
-	err := mapstructure.Decode(casted, &response)
-	if err != nil {
-		return nil, err
-	}
-
-	config := DiskConfig(response.Servers[index].DiskConfig)
-	return &config, nil
+type ServerWithDiskConfig struct {
+	servers.Server
+	DiskConfig DiskConfig `json:"OS-DCF:diskConfig"`
 }
diff --git a/openstack/compute/v2/extensions/diskconfig/results_test.go b/openstack/compute/v2/extensions/diskconfig/results_test.go
deleted file mode 100644
index 7c5b6c9..0000000
--- a/openstack/compute/v2/extensions/diskconfig/results_test.go
+++ /dev/null
@@ -1,68 +0,0 @@
-package diskconfig
-
-import (
-	"testing"
-
-	"github.com/gophercloud/gophercloud/openstack/compute/v2/servers"
-	"github.com/gophercloud/gophercloud/pagination"
-	th "github.com/gophercloud/gophercloud/testhelper"
-	"github.com/gophercloud/gophercloud/testhelper/client"
-)
-
-func TestExtractGet(t *testing.T) {
-	th.SetupHTTP()
-	defer th.TeardownHTTP()
-	servers.HandleServerGetSuccessfully(t)
-
-	config, err := ExtractGet(servers.Get(client.ServiceClient(), "1234asdf"))
-	th.AssertNoErr(t, err)
-	th.CheckEquals(t, Manual, *config)
-}
-
-func TestExtractUpdate(t *testing.T) {
-	th.SetupHTTP()
-	defer th.TeardownHTTP()
-	servers.HandleServerUpdateSuccessfully(t)
-
-	r := servers.Update(client.ServiceClient(), "1234asdf", servers.UpdateOpts{
-		Name: "new-name",
-	})
-	config, err := ExtractUpdate(r)
-	th.AssertNoErr(t, err)
-	th.CheckEquals(t, Manual, *config)
-}
-
-func TestExtractRebuild(t *testing.T) {
-	th.SetupHTTP()
-	defer th.TeardownHTTP()
-	servers.HandleRebuildSuccessfully(t, servers.SingleServerBody)
-
-	r := servers.Rebuild(client.ServiceClient(), "1234asdf", servers.RebuildOpts{
-		Name:       "new-name",
-		AdminPass:  "swordfish",
-		ImageID:    "http://104.130.131.164:8774/fcad67a6189847c4aecfa3c81a05783b/images/f90f6034-2570-4974-8351-6b49732ef2eb",
-		AccessIPv4: "1.2.3.4",
-	})
-	config, err := ExtractRebuild(r)
-	th.AssertNoErr(t, err)
-	th.CheckEquals(t, Manual, *config)
-}
-
-func TestExtractList(t *testing.T) {
-	th.SetupHTTP()
-	defer th.TeardownHTTP()
-	servers.HandleServerListSuccessfully(t)
-
-	pages := 0
-	err := servers.List(client.ServiceClient(), nil).EachPage(func(page pagination.Page) (bool, error) {
-		pages++
-
-		config, err := ExtractDiskConfig(page, 0)
-		th.AssertNoErr(t, err)
-		th.CheckEquals(t, Manual, *config)
-
-		return true, nil
-	})
-	th.AssertNoErr(t, err)
-	th.CheckEquals(t, pages, 1)
-}
diff --git a/openstack/compute/v2/extensions/floatingip/doc.go b/openstack/compute/v2/extensions/floatingip/doc.go
deleted file mode 100644
index f74f58c..0000000
--- a/openstack/compute/v2/extensions/floatingip/doc.go
+++ /dev/null
@@ -1,3 +0,0 @@
-// Package floatingip provides the ability to manage floating ips through
-// nova-network
-package floatingip
diff --git a/openstack/compute/v2/extensions/floatingips/doc.go b/openstack/compute/v2/extensions/floatingips/doc.go
new file mode 100644
index 0000000..6682fa6
--- /dev/null
+++ b/openstack/compute/v2/extensions/floatingips/doc.go
@@ -0,0 +1,3 @@
+// Package floatingips provides the ability to manage floating ips through
+// nova-network
+package floatingips
diff --git a/openstack/compute/v2/extensions/floatingip/fixtures.go b/openstack/compute/v2/extensions/floatingips/fixtures.go
similarity index 97%
rename from openstack/compute/v2/extensions/floatingip/fixtures.go
rename to openstack/compute/v2/extensions/floatingips/fixtures.go
index a75e051..b369ea2 100644
--- a/openstack/compute/v2/extensions/floatingip/fixtures.go
+++ b/openstack/compute/v2/extensions/floatingips/fixtures.go
@@ -1,6 +1,6 @@
 // +build fixtures
 
-package floatingip
+package floatingips
 
 import (
 	"fmt"
@@ -17,14 +17,14 @@
     "floating_ips": [
         {
             "fixed_ip": null,
-            "id": 1,
+            "id": "1",
             "instance_id": null,
             "ip": "10.10.10.1",
             "pool": "nova"
         },
         {
             "fixed_ip": "166.78.185.201",
-            "id": 2,
+            "id": "2",
             "instance_id": "4d8c3732-a248-40ed-bebc-539a6ffd25c0",
             "ip": "10.10.10.2",
             "pool": "nova"
@@ -38,7 +38,7 @@
 {
     "floating_ip": {
         "fixed_ip": "166.78.185.201",
-        "id": 2,
+        "id": "2",
         "instance_id": "4d8c3732-a248-40ed-bebc-539a6ffd25c0",
         "ip": "10.10.10.2",
         "pool": "nova"
@@ -51,7 +51,7 @@
 {
     "floating_ip": {
         "fixed_ip": null,
-        "id": 1,
+        "id": "1",
         "instance_id": null,
         "ip": "10.10.10.1",
         "pool": "nova"
diff --git a/openstack/compute/v2/extensions/floatingip/requests.go b/openstack/compute/v2/extensions/floatingips/requests.go
similarity index 98%
rename from openstack/compute/v2/extensions/floatingip/requests.go
rename to openstack/compute/v2/extensions/floatingips/requests.go
index c6c0ea9..d99033e 100644
--- a/openstack/compute/v2/extensions/floatingip/requests.go
+++ b/openstack/compute/v2/extensions/floatingips/requests.go
@@ -1,4 +1,4 @@
-package floatingip
+package floatingips
 
 import (
 	"errors"
@@ -10,7 +10,7 @@
 // List returns a Pager that allows you to iterate over a collection of FloatingIPs.
 func List(client *gophercloud.ServiceClient) pagination.Pager {
 	return pagination.NewPager(client, listURL(client), func(r pagination.PageResult) pagination.Page {
-		return FloatingIPsPage{pagination.SinglePageBase(r)}
+		return FloatingIPPage{pagination.SinglePageBase(r)}
 	})
 }
 
diff --git a/openstack/compute/v2/extensions/floatingip/requests_test.go b/openstack/compute/v2/extensions/floatingips/requests_test.go
similarity index 99%
rename from openstack/compute/v2/extensions/floatingip/requests_test.go
rename to openstack/compute/v2/extensions/floatingips/requests_test.go
index df979f8..705c92f 100644
--- a/openstack/compute/v2/extensions/floatingip/requests_test.go
+++ b/openstack/compute/v2/extensions/floatingips/requests_test.go
@@ -1,4 +1,4 @@
-package floatingip
+package floatingips
 
 import (
 	"testing"
diff --git a/openstack/compute/v2/extensions/floatingip/results.go b/openstack/compute/v2/extensions/floatingips/results.go
similarity index 70%
rename from openstack/compute/v2/extensions/floatingip/results.go
rename to openstack/compute/v2/extensions/floatingips/results.go
index 1e115f4..c77ed77 100644
--- a/openstack/compute/v2/extensions/floatingip/results.go
+++ b/openstack/compute/v2/extensions/floatingips/results.go
@@ -1,7 +1,6 @@
-package floatingip
+package floatingips
 
 import (
-	"github.com/mitchellh/mapstructure"
 	"github.com/gophercloud/gophercloud"
 	"github.com/gophercloud/gophercloud/pagination"
 )
@@ -9,29 +8,29 @@
 // A FloatingIP is an IP that can be associated with an instance
 type FloatingIP struct {
 	// ID is a unique ID of the Floating IP
-	ID string `mapstructure:"id"`
+	ID string `json:"id"`
 
 	// FixedIP is the IP of the instance related to the Floating IP
-	FixedIP string `mapstructure:"fixed_ip,omitempty"`
+	FixedIP string `json:"fixed_ip,omitempty"`
 
 	// InstanceID is the ID of the instance that is using the Floating IP
-	InstanceID string `mapstructure:"instance_id"`
+	InstanceID string `json:"instance_id"`
 
 	// IP is the actual Floating IP
-	IP string `mapstructure:"ip"`
+	IP string `json:"ip"`
 
 	// Pool is the pool of floating IPs that this floating IP belongs to
-	Pool string `mapstructure:"pool"`
+	Pool string `json:"pool"`
 }
 
-// FloatingIPsPage stores a single, only page of FloatingIPs
+// FloatingIPPage stores a single, only page of FloatingIPs
 // results from a List call.
-type FloatingIPsPage struct {
+type FloatingIPPage struct {
 	pagination.SinglePageBase
 }
 
 // IsEmpty determines whether or not a FloatingIPsPage is empty.
-func (page FloatingIPsPage) IsEmpty() (bool, error) {
+func (page FloatingIPPage) IsEmpty() (bool, error) {
 	va, err := ExtractFloatingIPs(page)
 	return len(va) == 0, err
 }
@@ -39,16 +38,15 @@
 // ExtractFloatingIPs interprets a page of results as a slice of
 // FloatingIPs.
 func ExtractFloatingIPs(page pagination.Page) ([]FloatingIP, error) {
-	casted := page.(FloatingIPsPage).Body
-	var response struct {
-		FloatingIPs []FloatingIP `mapstructure:"floating_ips"`
+	r := page.(FloatingIPPage)
+	var s struct {
+		FloatingIPs []FloatingIP `json:"floating_ips"`
 	}
-
-	err := mapstructure.WeakDecode(casted, &response)
-
-	return response.FloatingIPs, err
+	err := r.ExtractInto(&s)
+	return s.FloatingIPs, err
 }
 
+// FloatingIPResult is the raw result from a FloatingIP request.
 type FloatingIPResult struct {
 	gophercloud.Result
 }
@@ -56,16 +54,11 @@
 // Extract is a method that attempts to interpret any FloatingIP resource
 // response as a FloatingIP struct.
 func (r FloatingIPResult) Extract() (*FloatingIP, error) {
-	if r.Err != nil {
-		return nil, r.Err
+	var s struct {
+		FloatingIP *FloatingIP `json:"floating_ip"`
 	}
-
-	var res struct {
-		FloatingIP *FloatingIP `json:"floating_ip" mapstructure:"floating_ip"`
-	}
-
-	err := mapstructure.WeakDecode(r.Body, &res)
-	return res.FloatingIP, err
+	err := r.ExtractInto(&s)
+	return s.FloatingIP, err
 }
 
 // CreateResult is the response from a Create operation. Call its Extract method to interpret it
diff --git a/openstack/compute/v2/extensions/floatingip/urls.go b/openstack/compute/v2/extensions/floatingips/urls.go
similarity index 97%
rename from openstack/compute/v2/extensions/floatingip/urls.go
rename to openstack/compute/v2/extensions/floatingips/urls.go
index 0d02413..f8181da 100644
--- a/openstack/compute/v2/extensions/floatingip/urls.go
+++ b/openstack/compute/v2/extensions/floatingips/urls.go
@@ -1,4 +1,4 @@
-package floatingip
+package floatingips
 
 import "github.com/gophercloud/gophercloud"
 
diff --git a/openstack/compute/v2/extensions/floatingip/urls_test.go b/openstack/compute/v2/extensions/floatingips/urls_test.go
similarity index 98%
rename from openstack/compute/v2/extensions/floatingip/urls_test.go
rename to openstack/compute/v2/extensions/floatingips/urls_test.go
index 5c62a80..ff1489e 100644
--- a/openstack/compute/v2/extensions/floatingip/urls_test.go
+++ b/openstack/compute/v2/extensions/floatingips/urls_test.go
@@ -1,4 +1,4 @@
-package floatingip
+package floatingips
 
 import (
 	"testing"
diff --git a/openstack/compute/v2/extensions/keypairs/results.go b/openstack/compute/v2/extensions/keypairs/results.go
index 58a51d2..2b40943 100644
--- a/openstack/compute/v2/extensions/keypairs/results.go
+++ b/openstack/compute/v2/extensions/keypairs/results.go
@@ -1,7 +1,6 @@
 package keypairs
 
 import (
-	"github.com/mitchellh/mapstructure"
 	"github.com/gophercloud/gophercloud"
 	"github.com/gophercloud/gophercloud/pagination"
 )
@@ -10,22 +9,22 @@
 // servers.
 type KeyPair struct {
 	// Name is used to refer to this keypair from other services within this region.
-	Name string `mapstructure:"name"`
+	Name string `json:"name"`
 
 	// Fingerprint is a short sequence of bytes that can be used to authenticate or validate a longer
 	// public key.
-	Fingerprint string `mapstructure:"fingerprint"`
+	Fingerprint string `json:"fingerprint"`
 
 	// PublicKey is the public key from this pair, in OpenSSH format. "ssh-rsa AAAAB3Nz..."
-	PublicKey string `mapstructure:"public_key"`
+	PublicKey string `json:"public_key"`
 
 	// PrivateKey is the private key from this pair, in PEM format.
 	// "-----BEGIN RSA PRIVATE KEY-----\nMIICXA..." It is only present if this keypair was just
 	// returned from a Create call
-	PrivateKey string `mapstructure:"private_key"`
+	PrivateKey string `json:"private_key"`
 
 	// UserID is the user who owns this keypair.
-	UserID string `mapstructure:"user_id"`
+	UserID string `json:"user_id"`
 }
 
 // KeyPairPage stores a single, only page of KeyPair results from a List call.
@@ -41,17 +40,16 @@
 
 // ExtractKeyPairs interprets a page of results as a slice of KeyPairs.
 func ExtractKeyPairs(page pagination.Page) ([]KeyPair, error) {
+	r := page.(KeyPairPage)
 	type pair struct {
-		KeyPair KeyPair `mapstructure:"keypair"`
+		KeyPair KeyPair `json:"keypair"`
 	}
-
-	var resp struct {
-		KeyPairs []pair `mapstructure:"keypairs"`
+	var s struct {
+		KeyPairs []pair `json:"keypairs"`
 	}
-
-	err := mapstructure.Decode(page.(KeyPairPage).Body, &resp)
-	results := make([]KeyPair, len(resp.KeyPairs))
-	for i, pair := range resp.KeyPairs {
+	err := r.ExtractInto(&s)
+	results := make([]KeyPair, len(s.KeyPairs))
+	for i, pair := range s.KeyPairs {
 		results[i] = pair.KeyPair
 	}
 	return results, err
@@ -63,16 +61,11 @@
 
 // Extract is a method that attempts to interpret any KeyPair resource response as a KeyPair struct.
 func (r keyPairResult) Extract() (*KeyPair, error) {
-	if r.Err != nil {
-		return nil, r.Err
+	var s struct {
+		KeyPair *KeyPair `json:"keypair"`
 	}
-
-	var res struct {
-		KeyPair *KeyPair `json:"keypair" mapstructure:"keypair"`
-	}
-
-	err := mapstructure.Decode(r.Body, &res)
-	return res.KeyPair, err
+	err := r.ExtractInto(&s)
+	return s.KeyPair, err
 }
 
 // CreateResult is the response from a Create operation. Call its Extract method to interpret it
diff --git a/openstack/compute/v2/extensions/networks/fixtures.go b/openstack/compute/v2/extensions/networks/fixtures.go
index f94f331..ffa4282 100644
--- a/openstack/compute/v2/extensions/networks/fixtures.go
+++ b/openstack/compute/v2/extensions/networks/fixtures.go
@@ -8,6 +8,7 @@
 	"testing"
 	"time"
 
+	"github.com/gophercloud/gophercloud"
 	th "github.com/gophercloud/gophercloud/testhelper"
 	"github.com/gophercloud/gophercloud/testhelper/client"
 )
@@ -22,9 +23,8 @@
             "broadcast": "10.0.0.7",
             "cidr": "10.0.0.0/29",
             "cidr_v6": null,
-            "created_at": "2011-08-15 06:19:19.387525",
+            "created_at": "2011-08-15T06:19:19.387525",
             "deleted": false,
-            "deleted_at": null,
             "dhcp_start": "10.0.0.3",
             "dns1": null,
             "dns2": null,
@@ -40,7 +40,7 @@
             "priority": null,
             "project_id": "1234",
             "rxtx_base": null,
-            "updated_at": "2011-08-16 09:26:13.048257",
+            "updated_at": "2011-08-16T09:26:13.048257",
             "vlan": 100,
             "vpn_private_address": "10.0.0.2",
             "vpn_public_address": "127.0.0.1",
@@ -52,9 +52,8 @@
             "broadcast": "10.0.0.15",
             "cidr": "10.0.0.10/29",
             "cidr_v6": null,
-            "created_at": "2011-08-15 06:19:19.885495",
+            "created_at": "2011-08-15T06:19:19.387525",
             "deleted": false,
-            "deleted_at": null,
             "dhcp_start": "10.0.0.11",
             "dns1": null,
             "dns2": null,
@@ -70,7 +69,6 @@
             "priority": null,
             "project_id": null,
             "rxtx_base": null,
-            "updated_at": null,
             "vlan": 101,
             "vpn_private_address": "10.0.0.10",
             "vpn_public_address": null,
@@ -89,9 +87,8 @@
 			"broadcast": "10.0.0.15",
 			"cidr": "10.0.0.10/29",
 			"cidr_v6": null,
-			"created_at": "2011-08-15 06:19:19.885495",
+			"created_at": "2011-08-15T06:19:19.387525",
 			"deleted": false,
-			"deleted_at": null,
 			"dhcp_start": "10.0.0.11",
 			"dns1": null,
 			"dns2": null,
@@ -107,7 +104,6 @@
 			"priority": null,
 			"project_id": null,
 			"rxtx_base": null,
-			"updated_at": null,
 			"vlan": 101,
 			"vpn_private_address": "10.0.0.10",
 			"vpn_public_address": null,
@@ -124,9 +120,9 @@
 	Broadcast:         "10.0.0.7",
 	CIDR:              "10.0.0.0/29",
 	CIDRv6:            "",
-	CreatedAt:         time.Date(2011, 8, 15, 6, 19, 19, 387525000, time.UTC),
+	CreatedAt:         gophercloud.JSONRFC3339MilliNoZ(time.Date(2011, 8, 15, 6, 19, 19, 387525000, time.UTC)),
 	Deleted:           false,
-	DeletedAt:         nilTime,
+	DeletedAt:         gophercloud.JSONRFC3339MilliNoZ(nilTime),
 	DHCPStart:         "10.0.0.3",
 	DNS1:              "",
 	DNS2:              "",
@@ -142,7 +138,7 @@
 	Priority:          0,
 	ProjectID:         "1234",
 	RXTXBase:          0,
-	UpdatedAt:         time.Date(2011, 8, 16, 9, 26, 13, 48257000, time.UTC),
+	UpdatedAt:         gophercloud.JSONRFC3339MilliNoZ(time.Date(2011, 8, 16, 9, 26, 13, 48257000, time.UTC)),
 	VLAN:              100,
 	VPNPrivateAddress: "10.0.0.2",
 	VPNPublicAddress:  "127.0.0.1",
@@ -156,9 +152,9 @@
 	Broadcast:         "10.0.0.15",
 	CIDR:              "10.0.0.10/29",
 	CIDRv6:            "",
-	CreatedAt:         time.Date(2011, 8, 15, 6, 19, 19, 885495000, time.UTC),
+	CreatedAt:         gophercloud.JSONRFC3339MilliNoZ(time.Date(2011, 8, 15, 6, 19, 19, 387525000, time.UTC)),
 	Deleted:           false,
-	DeletedAt:         nilTime,
+	DeletedAt:         gophercloud.JSONRFC3339MilliNoZ(nilTime),
 	DHCPStart:         "10.0.0.11",
 	DNS1:              "",
 	DNS2:              "",
@@ -174,7 +170,7 @@
 	Priority:          0,
 	ProjectID:         "",
 	RXTXBase:          0,
-	UpdatedAt:         nilTime,
+	UpdatedAt:         gophercloud.JSONRFC3339MilliNoZ(nilTime),
 	VLAN:              101,
 	VPNPrivateAddress: "10.0.0.10",
 	VPNPublicAddress:  "",
diff --git a/openstack/compute/v2/extensions/networks/results.go b/openstack/compute/v2/extensions/networks/results.go
index 3ed7c68..d9b746e 100644
--- a/openstack/compute/v2/extensions/networks/results.go
+++ b/openstack/compute/v2/extensions/networks/results.go
@@ -1,10 +1,6 @@
 package networks
 
 import (
-	"fmt"
-	"time"
-
-	"github.com/mitchellh/mapstructure"
 	"github.com/gophercloud/gophercloud"
 	"github.com/gophercloud/gophercloud/pagination"
 )
@@ -12,88 +8,88 @@
 // A Network represents a nova-network that an instance communicates on
 type Network struct {
 	// The Bridge that VIFs on this network are connected to
-	Bridge string `mapstructure:"bridge"`
+	Bridge string `json:"bridge"`
 
 	// BridgeInterface is what interface is connected to the Bridge
-	BridgeInterface string `mapstructure:"bridge_interface"`
+	BridgeInterface string `json:"bridge_interface"`
 
 	// The Broadcast address of the network.
-	Broadcast string `mapstructure:"broadcast"`
+	Broadcast string `json:"broadcast"`
 
 	// CIDR is the IPv4 subnet.
-	CIDR string `mapstructure:"cidr"`
+	CIDR string `json:"cidr"`
 
 	// CIDRv6 is the IPv6 subnet.
-	CIDRv6 string `mapstructure:"cidr_v6"`
+	CIDRv6 string `json:"cidr_v6"`
 
 	// CreatedAt is when the network was created..
-	CreatedAt time.Time `mapstructure:"-"`
+	CreatedAt gophercloud.JSONRFC3339MilliNoZ `json:"created_at,omitempty"`
 
 	// Deleted shows if the network has been deleted.
-	Deleted bool `mapstructure:"deleted"`
+	Deleted bool `json:"deleted"`
 
 	// DeletedAt is the time when the network was deleted.
-	DeletedAt time.Time `mapstructure:"-"`
+	DeletedAt gophercloud.JSONRFC3339MilliNoZ `json:"deleted_at,omitempty"`
 
 	// DHCPStart is the start of the DHCP address range.
-	DHCPStart string `mapstructure:"dhcp_start"`
+	DHCPStart string `json:"dhcp_start"`
 
 	// DNS1 is the first DNS server to use through DHCP.
-	DNS1 string `mapstructure:"dns_1"`
+	DNS1 string `json:"dns_1"`
 
 	// DNS2 is the first DNS server to use through DHCP.
-	DNS2 string `mapstructure:"dns_2"`
+	DNS2 string `json:"dns_2"`
 
 	// Gateway is the network gateway.
-	Gateway string `mapstructure:"gateway"`
+	Gateway string `json:"gateway"`
 
 	// Gatewayv6 is the IPv6 network gateway.
-	Gatewayv6 string `mapstructure:"gateway_v6"`
+	Gatewayv6 string `json:"gateway_v6"`
 
 	// Host is the host that the network service is running on.
-	Host string `mapstructure:"host"`
+	Host string `json:"host"`
 
 	// ID is the UUID of the network.
-	ID string `mapstructure:"id"`
+	ID string `json:"id"`
 
 	// Injected determines if network information is injected into the host.
-	Injected bool `mapstructure:"injected"`
+	Injected bool `json:"injected"`
 
 	// Label is the common name that the network has..
-	Label string `mapstructure:"label"`
+	Label string `json:"label"`
 
 	// MultiHost is if multi-host networking is enablec..
-	MultiHost bool `mapstructure:"multi_host"`
+	MultiHost bool `json:"multi_host"`
 
 	// Netmask is the network netmask.
-	Netmask string `mapstructure:"netmask"`
+	Netmask string `json:"netmask"`
 
 	// Netmaskv6 is the IPv6 netmask.
-	Netmaskv6 string `mapstructure:"netmask_v6"`
+	Netmaskv6 string `json:"netmask_v6"`
 
 	// Priority is the network interface priority.
-	Priority int `mapstructure:"priority"`
+	Priority int `json:"priority"`
 
 	// ProjectID is the project associated with this network.
-	ProjectID string `mapstructure:"project_id"`
+	ProjectID string `json:"project_id"`
 
 	// RXTXBase configures bandwidth entitlement.
-	RXTXBase int `mapstructure:"rxtx_base"`
+	RXTXBase int `json:"rxtx_base"`
 
 	// UpdatedAt is the time when the network was last updated.
-	UpdatedAt time.Time `mapstructure:"-"`
+	UpdatedAt gophercloud.JSONRFC3339MilliNoZ `json:"updated_at,omitempty"`
 
 	// VLAN is the vlan this network runs on.
-	VLAN int `mapstructure:"vlan"`
+	VLAN int `json:"vlan"`
 
 	// VPNPrivateAddress is the private address of the CloudPipe VPN.
-	VPNPrivateAddress string `mapstructure:"vpn_private_address"`
+	VPNPrivateAddress string `json:"vpn_private_address"`
 
 	// VPNPublicAddress is the public address of the CloudPipe VPN.
-	VPNPublicAddress string `mapstructure:"vpn_public_address"`
+	VPNPublicAddress string `json:"vpn_public_address"`
 
 	// VPNPublicPort is the port of the CloudPipe VPN.
-	VPNPublicPort int `mapstructure:"vpn_public_port"`
+	VPNPublicPort int `json:"vpn_public_port"`
 }
 
 // NetworkPage stores a single, only page of Networks
@@ -110,51 +106,12 @@
 
 // ExtractNetworks interprets a page of results as a slice of Networks
 func ExtractNetworks(page pagination.Page) ([]Network, error) {
-	var res struct {
-		Networks []Network `mapstructure:"networks"`
+	r := page.(NetworkPage)
+	var s struct {
+		Networks []Network `json:"networks"`
 	}
-
-	err := mapstructure.Decode(page.(NetworkPage).Body, &res)
-
-	var rawNetworks []interface{}
-	body := page.(NetworkPage).Body
-	switch body.(type) {
-	case map[string]interface{}:
-		rawNetworks = body.(map[string]interface{})["networks"].([]interface{})
-	case map[string][]interface{}:
-		rawNetworks = body.(map[string][]interface{})["networks"]
-	default:
-		return res.Networks, fmt.Errorf("Unknown type")
-	}
-
-	for i := range rawNetworks {
-		thisNetwork := rawNetworks[i].(map[string]interface{})
-		if t, ok := thisNetwork["created_at"].(string); ok && t != "" {
-			createdAt, err := time.Parse("2006-01-02 15:04:05.000000", t)
-			if err != nil {
-				return res.Networks, err
-			}
-			res.Networks[i].CreatedAt = createdAt
-		}
-
-		if t, ok := thisNetwork["updated_at"].(string); ok && t != "" {
-			updatedAt, err := time.Parse("2006-01-02 15:04:05.000000", t)
-			if err != nil {
-				return res.Networks, err
-			}
-			res.Networks[i].UpdatedAt = updatedAt
-		}
-
-		if t, ok := thisNetwork["deleted_at"].(string); ok && t != "" {
-			deletedAt, err := time.Parse("2006-01-02 15:04:05.000000", t)
-			if err != nil {
-				return res.Networks, err
-			}
-			res.Networks[i].DeletedAt = deletedAt
-		}
-	}
-
-	return res.Networks, err
+	err := r.ExtractInto(&s)
+	return s.Networks, err
 }
 
 type NetworkResult struct {
@@ -164,55 +121,11 @@
 // Extract is a method that attempts to interpret any Network resource
 // response as a Network struct.
 func (r NetworkResult) Extract() (*Network, error) {
-	if r.Err != nil {
-		return nil, r.Err
+	var s struct {
+		Network *Network `json:"network"`
 	}
-
-	var res struct {
-		Network *Network `json:"network" mapstructure:"network"`
-	}
-
-	config := &mapstructure.DecoderConfig{
-		Result:           &res,
-		WeaklyTypedInput: true,
-	}
-	decoder, err := mapstructure.NewDecoder(config)
-	if err != nil {
-		return nil, err
-	}
-
-	if err := decoder.Decode(r.Body); err != nil {
-		return nil, err
-	}
-
-	b := r.Body.(map[string]interface{})["network"].(map[string]interface{})
-
-	if t, ok := b["created_at"].(string); ok && t != "" {
-		createdAt, err := time.Parse("2006-01-02 15:04:05.000000", t)
-		if err != nil {
-			return res.Network, err
-		}
-		res.Network.CreatedAt = createdAt
-	}
-
-	if t, ok := b["updated_at"].(string); ok && t != "" {
-		updatedAt, err := time.Parse("2006-01-02 15:04:05.000000", t)
-		if err != nil {
-			return res.Network, err
-		}
-		res.Network.UpdatedAt = updatedAt
-	}
-
-	if t, ok := b["deleted_at"].(string); ok && t != "" {
-		deletedAt, err := time.Parse("2006-01-02 15:04:05.000000", t)
-		if err != nil {
-			return res.Network, err
-		}
-		res.Network.DeletedAt = deletedAt
-	}
-
-	return res.Network, err
-
+	err := r.ExtractInto(&s)
+	return s.Network, err
 }
 
 // GetResult is the response from a Get operation. Call its Extract method to interpret it
diff --git a/openstack/compute/v2/extensions/schedulerhints/requests_test.go b/openstack/compute/v2/extensions/schedulerhints/requests_test.go
index 4e7c190..605b72b 100644
--- a/openstack/compute/v2/extensions/schedulerhints/requests_test.go
+++ b/openstack/compute/v2/extensions/schedulerhints/requests_test.go
@@ -39,9 +39,7 @@
 			"server": {
 				"name": "createdserver",
 				"imageRef": "asdfasdfasdf",
-				"flavorRef": "performance1-1",
-				"flavorName": "",
-				"imageName": ""
+				"flavorRef": "performance1-1"
 			},
 			"os:scheduler_hints": {
 				"group": "101aed42-22d9-4a3e-9ba1-21103b0d1aba",
@@ -99,9 +97,7 @@
 			"server": {
 				"name": "createdserver",
 				"imageRef": "asdfasdfasdf",
-				"flavorRef": "performance1-1",
-				"flavorName": "",
-				"imageName": ""
+				"flavorRef": "performance1-1"
 			},
 			"os:scheduler_hints": {
 				"group": "101aed42-22d9-4a3e-9ba1-21103b0d1aba",
diff --git a/openstack/compute/v2/extensions/secgroups/fixtures.go b/openstack/compute/v2/extensions/secgroups/fixtures.go
index 0667b00..0f97ac8 100644
--- a/openstack/compute/v2/extensions/secgroups/fixtures.go
+++ b/openstack/compute/v2/extensions/secgroups/fixtures.go
@@ -163,7 +163,7 @@
 		fmt.Fprintf(w, `
 {
 	"security_group": {
-		"id": 12345
+		"id": "12345"
 	}
 }
 			`)
diff --git a/openstack/compute/v2/extensions/secgroups/results.go b/openstack/compute/v2/extensions/secgroups/results.go
index d7d0936..5e18c0b 100644
--- a/openstack/compute/v2/extensions/secgroups/results.go
+++ b/openstack/compute/v2/extensions/secgroups/results.go
@@ -1,8 +1,6 @@
 package secgroups
 
 import (
-	"github.com/mitchellh/mapstructure"
-
 	"github.com/gophercloud/gophercloud"
 	"github.com/gophercloud/gophercloud/pagination"
 )
@@ -24,7 +22,7 @@
 	Rules []Rule
 
 	// The ID of the tenant to which this security group belongs.
-	TenantID string `mapstructure:"tenant_id"`
+	TenantID string `json:"tenant_id"`
 }
 
 // Rule represents a security group rule, a policy which determines how a
@@ -36,19 +34,19 @@
 	ID string
 
 	// The lower bound of the port range which this security group should open up
-	FromPort int `mapstructure:"from_port"`
+	FromPort int `json:"from_port"`
 
 	// The upper bound of the port range which this security group should open up
-	ToPort int `mapstructure:"to_port"`
+	ToPort int `json:"to_port"`
 
 	// The IP protocol (e.g. TCP) which the security group accepts
-	IPProtocol string `mapstructure:"ip_protocol"`
+	IPProtocol string `json:"ip_protocol"`
 
 	// The CIDR IP range whose traffic can be received
-	IPRange IPRange `mapstructure:"ip_range"`
+	IPRange IPRange `json:"ip_range"`
 
 	// The security group ID to which this rule belongs
-	ParentGroupID string `mapstructure:"parent_group_id"`
+	ParentGroupID string `json:"parent_group_id"`
 
 	// Not documented.
 	Group Group
@@ -62,7 +60,7 @@
 
 // Group represents a group.
 type Group struct {
-	TenantID string `mapstructure:"tenant_id"`
+	TenantID string `json:"tenant_id"`
 	Name     string
 }
 
@@ -74,22 +72,17 @@
 // IsEmpty determines whether or not a page of Security Groups contains any results.
 func (page SecurityGroupPage) IsEmpty() (bool, error) {
 	users, err := ExtractSecurityGroups(page)
-	if err != nil {
-		return false, err
-	}
-	return len(users) == 0, nil
+	return len(users) == 0, err
 }
 
 // ExtractSecurityGroups returns a slice of SecurityGroups contained in a single page of results.
 func ExtractSecurityGroups(page pagination.Page) ([]SecurityGroup, error) {
-	casted := page.(SecurityGroupPage).Body
-	var response struct {
-		SecurityGroups []SecurityGroup `mapstructure:"security_groups"`
+	r := page.(SecurityGroupPage)
+	var s struct {
+		SecurityGroups []SecurityGroup `json:"security_groups"`
 	}
-
-	err := mapstructure.WeakDecode(casted, &response)
-
-	return response.SecurityGroups, err
+	err := r.ExtractInto(&s)
+	return s.SecurityGroups, err
 }
 
 type commonResult struct {
@@ -113,17 +106,11 @@
 
 // Extract will extract a SecurityGroup struct from most responses.
 func (r commonResult) Extract() (*SecurityGroup, error) {
-	if r.Err != nil {
-		return nil, r.Err
+	var s struct {
+		SecurityGroup *SecurityGroup `json:"security_group"`
 	}
-
-	var response struct {
-		SecurityGroup SecurityGroup `mapstructure:"security_group"`
-	}
-
-	err := mapstructure.WeakDecode(r.Body, &response)
-
-	return &response.SecurityGroup, err
+	err := r.ExtractInto(&s)
+	return s.SecurityGroup, err
 }
 
 // CreateRuleResult represents the result when adding rules to a security group.
@@ -133,15 +120,9 @@
 
 // Extract will extract a Rule struct from a CreateRuleResult.
 func (r CreateRuleResult) Extract() (*Rule, error) {
-	if r.Err != nil {
-		return nil, r.Err
+	var s struct {
+		Rule *Rule `json:"security_group_rule"`
 	}
-
-	var response struct {
-		Rule Rule `mapstructure:"security_group_rule"`
-	}
-
-	err := mapstructure.WeakDecode(r.Body, &response)
-
-	return &response.Rule, err
+	err := r.ExtractInto(&s)
+	return s.Rule, err
 }
diff --git a/openstack/compute/v2/extensions/servergroups/requests.go b/openstack/compute/v2/extensions/servergroups/requests.go
index 02e6de2..e3b2493 100644
--- a/openstack/compute/v2/extensions/servergroups/requests.go
+++ b/openstack/compute/v2/extensions/servergroups/requests.go
@@ -10,7 +10,7 @@
 // List returns a Pager that allows you to iterate over a collection of ServerGroups.
 func List(client *gophercloud.ServiceClient) pagination.Pager {
 	return pagination.NewPager(client, listURL(client), func(r pagination.PageResult) pagination.Page {
-		return ServerGroupsPage{pagination.SinglePageBase(r)}
+		return ServerGroupPage{pagination.SinglePageBase(r)}
 	})
 }
 
diff --git a/openstack/compute/v2/extensions/servergroups/results.go b/openstack/compute/v2/extensions/servergroups/results.go
index 2b59551..ff64a7e 100644
--- a/openstack/compute/v2/extensions/servergroups/results.go
+++ b/openstack/compute/v2/extensions/servergroups/results.go
@@ -1,7 +1,6 @@
 package servergroups
 
 import (
-	"github.com/mitchellh/mapstructure"
 	"github.com/gophercloud/gophercloud"
 	"github.com/gophercloud/gophercloud/pagination"
 )
@@ -9,29 +8,29 @@
 // A ServerGroup creates a policy for instance placement in the cloud
 type ServerGroup struct {
 	// ID is the unique ID of the Server Group.
-	ID string `mapstructure:"id"`
+	ID string `json:"id"`
 
 	// Name is the common name of the server group.
-	Name string `mapstructure:"name"`
+	Name string `json:"name"`
 
 	// Polices are the group policies.
-	Policies []string `mapstructure:"policies"`
+	Policies []string `json:"policies"`
 
 	// Members are the members of the server group.
-	Members []string `mapstructure:"members"`
+	Members []string `json:"members"`
 
 	// Metadata includes a list of all user-specified key-value pairs attached to the Server Group.
 	Metadata map[string]interface{}
 }
 
-// ServerGroupsPage stores a single, only page of ServerGroups
+// ServerGroupPage stores a single, only page of ServerGroups
 // results from a List call.
-type ServerGroupsPage struct {
+type ServerGroupPage struct {
 	pagination.SinglePageBase
 }
 
 // IsEmpty determines whether or not a ServerGroupsPage is empty.
-func (page ServerGroupsPage) IsEmpty() (bool, error) {
+func (page ServerGroupPage) IsEmpty() (bool, error) {
 	va, err := ExtractServerGroups(page)
 	return len(va) == 0, err
 }
@@ -39,14 +38,12 @@
 // ExtractServerGroups interprets a page of results as a slice of
 // ServerGroups.
 func ExtractServerGroups(page pagination.Page) ([]ServerGroup, error) {
-	casted := page.(ServerGroupsPage).Body
-	var response struct {
-		ServerGroups []ServerGroup `mapstructure:"server_groups"`
+	r := page.(ServerGroupPage)
+	var s struct {
+		ServerGroups []ServerGroup `json:"server_groups"`
 	}
-
-	err := mapstructure.WeakDecode(casted, &response)
-
-	return response.ServerGroups, err
+	err := r.ExtractInto(&s)
+	return s.ServerGroups, err
 }
 
 type ServerGroupResult struct {
@@ -56,16 +53,11 @@
 // Extract is a method that attempts to interpret any Server Group resource
 // response as a ServerGroup struct.
 func (r ServerGroupResult) Extract() (*ServerGroup, error) {
-	if r.Err != nil {
-		return nil, r.Err
+	var s struct {
+		ServerGroup *ServerGroup `json:"server_group"`
 	}
-
-	var res struct {
-		ServerGroup *ServerGroup `json:"server_group" mapstructure:"server_group"`
-	}
-
-	err := mapstructure.WeakDecode(r.Body, &res)
-	return res.ServerGroup, err
+	err := r.ExtractInto(&s)
+	return s.ServerGroup, err
 }
 
 // CreateResult is the response from a Create operation. Call its Extract method to interpret it
diff --git a/openstack/compute/v2/extensions/tenantnetworks/results.go b/openstack/compute/v2/extensions/tenantnetworks/results.go
index f55a27e..5db5cbd 100644
--- a/openstack/compute/v2/extensions/tenantnetworks/results.go
+++ b/openstack/compute/v2/extensions/tenantnetworks/results.go
@@ -1,7 +1,6 @@
 package tenantnetworks
 
 import (
-	"github.com/mitchellh/mapstructure"
 	"github.com/gophercloud/gophercloud"
 	"github.com/gophercloud/gophercloud/pagination"
 )
@@ -9,13 +8,13 @@
 // A Network represents a nova-network that an instance communicates on
 type Network struct {
 	// CIDR is the IPv4 subnet.
-	CIDR string `mapstructure:"cidr"`
+	CIDR string `json:"cidr"`
 
 	// ID is the UUID of the network.
-	ID string `mapstructure:"id"`
+	ID string `json:"id"`
 
 	// Name is the common name that the network has.
-	Name string `mapstructure:"label"`
+	Name string `json:"label"`
 }
 
 // NetworkPage stores a single, only page of Networks
@@ -32,14 +31,12 @@
 
 // ExtractNetworks interprets a page of results as a slice of Networks
 func ExtractNetworks(page pagination.Page) ([]Network, error) {
-	networks := page.(NetworkPage).Body
-	var res struct {
-		Networks []Network `mapstructure:"networks"`
+	r := page.(NetworkPage)
+	var s struct {
+		Networks []Network `json:"networks"`
 	}
-
-	err := mapstructure.WeakDecode(networks, &res)
-
-	return res.Networks, err
+	err := r.ExtractInto(&s)
+	return s.Networks, err
 }
 
 type NetworkResult struct {
@@ -49,16 +46,11 @@
 // Extract is a method that attempts to interpret any Network resource
 // response as a Network struct.
 func (r NetworkResult) Extract() (*Network, error) {
-	if r.Err != nil {
-		return nil, r.Err
+	var s struct {
+		Network *Network `json:"network"`
 	}
-
-	var res struct {
-		Network *Network `json:"network" mapstructure:"network"`
-	}
-
-	err := mapstructure.Decode(r.Body, &res)
-	return res.Network, err
+	err := r.ExtractInto(&s)
+	return s.Network, err
 }
 
 // GetResult is the response from a Get operation. Call its Extract method to interpret it
diff --git a/openstack/compute/v2/extensions/volumeattach/results.go b/openstack/compute/v2/extensions/volumeattach/results.go
index 76aeee7..62e7398 100644
--- a/openstack/compute/v2/extensions/volumeattach/results.go
+++ b/openstack/compute/v2/extensions/volumeattach/results.go
@@ -1,24 +1,23 @@
 package volumeattach
 
 import (
-	"github.com/mitchellh/mapstructure"
 	"github.com/gophercloud/gophercloud"
 	"github.com/gophercloud/gophercloud/pagination"
 )
 
-// VolumeAttach controls the attachment of a volume to an instance.
+// VolumeAttachment controls the attachment of a volume to an instance.
 type VolumeAttachment struct {
 	// ID is a unique id of the attachment
-	ID string `mapstructure:"id"`
+	ID string `json:"id"`
 
 	// Device is what device the volume is attached as
-	Device string `mapstructure:"device"`
+	Device string `json:"device"`
 
 	// VolumeID is the ID of the attached volume
-	VolumeID string `mapstructure:"volumeId"`
+	VolumeID string `json:"volumeId"`
 
 	// ServerID is the ID of the instance that has the volume attached
-	ServerID string `mapstructure:"serverId"`
+	ServerID string `json:"serverId"`
 }
 
 // VolumeAttachmentsPage stores a single, only page of VolumeAttachments
@@ -36,14 +35,12 @@
 // ExtractVolumeAttachments interprets a page of results as a slice of
 // VolumeAttachments.
 func ExtractVolumeAttachments(page pagination.Page) ([]VolumeAttachment, error) {
-	casted := page.(VolumeAttachmentsPage).Body
-	var response struct {
-		VolumeAttachments []VolumeAttachment `mapstructure:"volumeAttachments"`
+	r := page.(VolumeAttachmentsPage)
+	var s struct {
+		VolumeAttachments []VolumeAttachment `json:"volumeAttachments"`
 	}
-
-	err := mapstructure.WeakDecode(casted, &response)
-
-	return response.VolumeAttachments, err
+	err := r.ExtractInto(&s)
+	return s.VolumeAttachments, err
 }
 
 type VolumeAttachmentResult struct {
@@ -53,16 +50,11 @@
 // Extract is a method that attempts to interpret any VolumeAttachment resource
 // response as a VolumeAttachment struct.
 func (r VolumeAttachmentResult) Extract() (*VolumeAttachment, error) {
-	if r.Err != nil {
-		return nil, r.Err
+	var s struct {
+		VolumeAttachment *VolumeAttachment `json:"volumeAttachment"`
 	}
-
-	var res struct {
-		VolumeAttachment *VolumeAttachment `json:"volumeAttachment" mapstructure:"volumeAttachment"`
-	}
-
-	err := mapstructure.Decode(r.Body, &res)
-	return res.VolumeAttachment, err
+	err := r.ExtractInto(&s)
+	return s.VolumeAttachment, err
 }
 
 // CreateResult is the response from a Create operation. Call its Extract method to interpret it
diff --git a/openstack/compute/v2/flavors/results.go b/openstack/compute/v2/flavors/results.go
index 785cbe2..3f14e76 100644
--- a/openstack/compute/v2/flavors/results.go
+++ b/openstack/compute/v2/flavors/results.go
@@ -2,9 +2,7 @@
 
 import (
 	"errors"
-	"reflect"
 
-	"github.com/mitchellh/mapstructure"
 	"github.com/gophercloud/gophercloud"
 	"github.com/gophercloud/gophercloud/pagination"
 )
@@ -18,48 +16,35 @@
 }
 
 // Extract provides access to the individual Flavor returned by the Get function.
-func (gr GetResult) Extract() (*Flavor, error) {
-	if gr.Err != nil {
-		return nil, gr.Err
+func (r GetResult) Extract() (*Flavor, error) {
+	var s struct {
+		Flavor *Flavor `json:"flavor"`
 	}
-
-	var result struct {
-		Flavor Flavor `mapstructure:"flavor"`
-	}
-
-	cfg := &mapstructure.DecoderConfig{
-		DecodeHook: defaulter,
-		Result:     &result,
-	}
-	decoder, err := mapstructure.NewDecoder(cfg)
-	if err != nil {
-		return nil, err
-	}
-	err = decoder.Decode(gr.Body)
-	return &result.Flavor, err
+	err := r.ExtractInto(&s)
+	return s.Flavor, err
 }
 
 // Flavor records represent (virtual) hardware configurations for server resources in a region.
 type Flavor struct {
 	// The Id field contains the flavor's unique identifier.
 	// For example, this identifier will be useful when specifying which hardware configuration to use for a new server instance.
-	ID string `mapstructure:"id"`
+	ID string `json:"id"`
 
 	// The Disk and RA< fields provide a measure of storage space offered by the flavor, in GB and MB, respectively.
-	Disk int `mapstructure:"disk"`
-	RAM  int `mapstructure:"ram"`
+	Disk int `json:"disk"`
+	RAM  int `json:"ram"`
 
 	// The Name field provides a human-readable moniker for the flavor.
-	Name string `mapstructure:"name"`
+	Name string `json:"name"`
 
-	RxTxFactor float64 `mapstructure:"rxtx_factor"`
+	RxTxFactor float64 `json:"rxtx_factor"`
 
 	// Swap indicates how much space is reserved for swap.
 	// If not provided, this field will be set to 0.
-	Swap int `mapstructure:"swap"`
+	Swap int `json:"swap"`
 
 	// VCPUs indicates how many (virtual) CPUs are available for this flavor.
-	VCPUs int `mapstructure:"vcpus"`
+	VCPUs int `json:"vcpus"`
 }
 
 // FlavorPage contains a single page of the response from a List call.
@@ -68,55 +53,29 @@
 }
 
 // IsEmpty determines if a page contains any results.
-func (p FlavorPage) IsEmpty() (bool, error) {
-	flavors, err := ExtractFlavors(p)
-	if err != nil {
-		return true, err
-	}
-	return len(flavors) == 0, nil
+func (page FlavorPage) IsEmpty() (bool, error) {
+	flavors, err := ExtractFlavors(page)
+	return len(flavors) == 0, err
 }
 
 // NextPageURL uses the response's embedded link reference to navigate to the next page of results.
-func (p FlavorPage) NextPageURL() (string, error) {
-	type resp struct {
-		Links []gophercloud.Link `mapstructure:"flavors_links"`
+func (page FlavorPage) NextPageURL() (string, error) {
+	var s struct {
+		Links []gophercloud.Link `json:"flavors_links"`
 	}
-
-	var r resp
-	err := mapstructure.Decode(p.Body, &r)
+	err := page.ExtractInto(&s)
 	if err != nil {
 		return "", err
 	}
-
-	return gophercloud.ExtractNextURL(r.Links)
-}
-
-func defaulter(from, to reflect.Kind, v interface{}) (interface{}, error) {
-	if (from == reflect.String) && (to == reflect.Int) {
-		return 0, nil
-	}
-	return v, nil
+	return gophercloud.ExtractNextURL(s.Links)
 }
 
 // ExtractFlavors provides access to the list of flavors in a page acquired from the List operation.
 func ExtractFlavors(page pagination.Page) ([]Flavor, error) {
-	casted := page.(FlavorPage).Body
-	var container struct {
-		Flavors []Flavor `mapstructure:"flavors"`
+	r := page.(FlavorPage)
+	var s struct {
+		Flavors []Flavor `json:"flavors"`
 	}
-
-	cfg := &mapstructure.DecoderConfig{
-		DecodeHook: defaulter,
-		Result:     &container,
-	}
-	decoder, err := mapstructure.NewDecoder(cfg)
-	if err != nil {
-		return container.Flavors, err
-	}
-	err = decoder.Decode(casted)
-	if err != nil {
-		return container.Flavors, err
-	}
-
-	return container.Flavors, nil
+	err := r.ExtractInto(&s)
+	return s.Flavors, err
 }
diff --git a/openstack/compute/v2/images/results.go b/openstack/compute/v2/images/results.go
index beee0dc..c9832d4 100644
--- a/openstack/compute/v2/images/results.go
+++ b/openstack/compute/v2/images/results.go
@@ -1,7 +1,6 @@
 package images
 
 import (
-	"github.com/mitchellh/mapstructure"
 	"github.com/gophercloud/gophercloud"
 	"github.com/gophercloud/gophercloud/pagination"
 )
@@ -17,17 +16,12 @@
 }
 
 // Extract interprets a GetResult as an Image.
-func (gr GetResult) Extract() (*Image, error) {
-	if gr.Err != nil {
-		return nil, gr.Err
+func (r GetResult) Extract() (*Image, error) {
+	var s struct {
+		Image *Image `json:"image"`
 	}
-
-	var decoded struct {
-		Image Image `mapstructure:"image"`
-	}
-
-	err := mapstructure.Decode(gr.Body, &decoded)
-	return &decoded.Image, err
+	err := r.ExtractInto(&s)
+	return s.Image, err
 }
 
 // Image is used for JSON (un)marshalling.
@@ -62,34 +56,27 @@
 // IsEmpty returns true if a page contains no Image results.
 func (page ImagePage) IsEmpty() (bool, error) {
 	images, err := ExtractImages(page)
-	if err != nil {
-		return true, err
-	}
-	return len(images) == 0, nil
+	return len(images) == 0, err
 }
 
 // NextPageURL uses the response's embedded link reference to navigate to the next page of results.
 func (page ImagePage) NextPageURL() (string, error) {
-	type resp struct {
-		Links []gophercloud.Link `mapstructure:"images_links"`
+	var s struct {
+		Links []gophercloud.Link `json:"images_links"`
 	}
-
-	var r resp
-	err := mapstructure.Decode(page.Body, &r)
+	err := page.ExtractInto(&s)
 	if err != nil {
 		return "", err
 	}
-
-	return gophercloud.ExtractNextURL(r.Links)
+	return gophercloud.ExtractNextURL(s.Links)
 }
 
 // ExtractImages converts a page of List results into a slice of usable Image structs.
 func ExtractImages(page pagination.Page) ([]Image, error) {
-	casted := page.(ImagePage).Body
-	var results struct {
-		Images []Image `mapstructure:"images"`
+	r := page.(ImagePage)
+	var s struct {
+		Images []Image `json:"images"`
 	}
-
-	err := mapstructure.Decode(casted, &results)
-	return results.Images, err
+	err := r.ExtractInto(&s)
+	return s.Images, err
 }
diff --git a/openstack/compute/v2/servers/requests.go b/openstack/compute/v2/servers/requests.go
index 7c964d2..06db312 100644
--- a/openstack/compute/v2/servers/requests.go
+++ b/openstack/compute/v2/servers/requests.go
@@ -195,9 +195,7 @@
 
 	server["name"] = opts.Name
 	server["imageRef"] = opts.ImageRef
-	server["imageName"] = opts.ImageName
 	server["flavorRef"] = opts.FlavorRef
-	server["flavorName"] = opts.FlavorName
 
 	if opts.UserData != nil {
 		encoded := base64.StdEncoding.EncodeToString(opts.UserData)
@@ -503,10 +501,13 @@
 		return server, err
 	}
 
-	server["name"] = opts.Name
 	server["adminPass"] = opts.AdminPass
 	server["imageRef"] = opts.ImageID
 
+	if opts.Name != "" {
+		server["name"] = opts.Name
+	}
+
 	if opts.AccessIPv4 != "" {
 		server["accessIPv4"] = opts.AccessIPv4
 	}
diff --git a/openstack/compute/v2/servers/results.go b/openstack/compute/v2/servers/results.go
index 665b8c8..2517e65 100644
--- a/openstack/compute/v2/servers/results.go
+++ b/openstack/compute/v2/servers/results.go
@@ -1,12 +1,10 @@
 package servers
 
 import (
-	"reflect"
 	"fmt"
-	"path"
 	"net/url"
+	"path"
 
-	"github.com/mitchellh/mapstructure"
 	"github.com/gophercloud/gophercloud"
 	"github.com/gophercloud/gophercloud/pagination"
 )
@@ -17,29 +15,11 @@
 
 // Extract interprets any serverResult as a Server, if possible.
 func (r serverResult) Extract() (*Server, error) {
-	if r.Err != nil {
-		return nil, r.Err
+	var s struct {
+		Server *Server `json:"server"`
 	}
-
-	var response struct {
-		Server Server `mapstructure:"server"`
-	}
-
-	config := &mapstructure.DecoderConfig{
-		DecodeHook: toMapFromString,
-		Result:     &response,
-	}
-	decoder, err := mapstructure.NewDecoder(config)
-	if err != nil {
-		return nil, err
-	}
-
-	err = decoder.Decode(r.Body)
-	if err != nil {
-		return nil, err
-	}
-
-	return &response.Server, nil
+	err := r.ExtractInto(&s)
+	return s.Server, err
 }
 
 // CreateResult temporarily contains the response from a Create call.
@@ -92,40 +72,35 @@
 	if err != nil {
 		return "", fmt.Errorf("Failed to parse the image id: %s", err.Error())
 	}
-	imageId := path.Base(u.Path)
-	if imageId == "." || imageId == "/" {
+	imageID := path.Base(u.Path)
+	if imageID == "." || imageID == "/" {
 		return "", fmt.Errorf("Failed to parse the ID of newly created image: %s", u)
 	}
-	return imageId, nil
+	return imageID, nil
 }
 
 // Extract interprets any RescueResult as an AdminPass, if possible.
 func (r RescueResult) Extract() (string, error) {
-	if r.Err != nil {
-		return "", r.Err
+	var s struct {
+		AdminPass string `json:"adminPass"`
 	}
-
-	var response struct {
-		AdminPass string `mapstructure:"adminPass"`
-	}
-
-	err := mapstructure.Decode(r.Body, &response)
-	return response.AdminPass, err
+	err := r.ExtractInto(&s)
+	return s.AdminPass, err
 }
 
 // Server exposes only the standard OpenStack fields corresponding to a given server on the user's account.
 type Server struct {
 	// ID uniquely identifies this server amongst all other servers, including those not accessible to the current tenant.
-	ID string
+	ID string `json:"id"`
 
 	// TenantID identifies the tenant owning this server resource.
-	TenantID string `mapstructure:"tenant_id"`
+	TenantID string `json:"tenant_id"`
 
 	// UserID uniquely identifies the user account owning the tenant.
-	UserID string `mapstructure:"user_id"`
+	UserID string `json:"user_id"`
 
 	// Name contains the human-readable name for the server.
-	Name string
+	Name string `json:"name"`
 
 	// Updated and Created contain ISO-8601 timestamps of when the state of the server last changed, and when it was created.
 	Updated string
@@ -159,14 +134,14 @@
 	Links []interface{}
 
 	// KeyName indicates which public key was injected into the server on launch.
-	KeyName string `json:"key_name" mapstructure:"key_name"`
+	KeyName string `json:"key_name"`
 
 	// AdminPass will generally be empty ("").  However, it will contain the administrative password chosen when provisioning a new server without a set AdminPass setting in the first place.
 	// Note that this is the ONLY time this field will be valid.
-	AdminPass string `json:"adminPass" mapstructure:"adminPass"`
+	AdminPass string `json:"adminPass"`
 
 	// SecurityGroups includes the security groups that this instance has applied to it
-	SecurityGroups []map[string]interface{} `json:"security_groups" mapstructure:"security_groups"`
+	SecurityGroups []map[string]interface{} `json:"security_groups"`
 }
 
 // ServerPage abstracts the raw results of making a List() request against the API.
@@ -179,47 +154,29 @@
 // IsEmpty returns true if a page contains no Server results.
 func (page ServerPage) IsEmpty() (bool, error) {
 	servers, err := ExtractServers(page)
-	if err != nil {
-		return true, err
-	}
-	return len(servers) == 0, nil
+	return len(servers) == 0, err
 }
 
 // NextPageURL uses the response's embedded link reference to navigate to the next page of results.
 func (page ServerPage) NextPageURL() (string, error) {
-	type resp struct {
-		Links []gophercloud.Link `mapstructure:"servers_links"`
+	var s struct {
+		Links []gophercloud.Link `json:"servers_links"`
 	}
-
-	var r resp
-	err := mapstructure.Decode(page.Body, &r)
+	err := page.ExtractInto(&s)
 	if err != nil {
 		return "", err
 	}
-
-	return gophercloud.ExtractNextURL(r.Links)
+	return gophercloud.ExtractNextURL(s.Links)
 }
 
 // ExtractServers interprets the results of a single page from a List() call, producing a slice of Server entities.
 func ExtractServers(page pagination.Page) ([]Server, error) {
-	casted := page.(ServerPage).Body
-
-	var response struct {
-		Servers []Server `mapstructure:"servers"`
+	r := page.(ServerPage)
+	var s struct {
+		Servers []Server `json:"servers"`
 	}
-
-	config := &mapstructure.DecoderConfig{
-		DecodeHook: toMapFromString,
-		Result:     &response,
-	}
-	decoder, err := mapstructure.NewDecoder(config)
-	if err != nil {
-		return nil, err
-	}
-
-	err = decoder.Decode(casted)
-
-	return response.Servers, err
+	err := r.ExtractInto(&s)
+	return s.Servers, err
 }
 
 // MetadataResult contains the result of a call for (potentially) multiple key-value pairs.
@@ -264,43 +221,26 @@
 
 // Extract interprets any MetadataResult as a Metadata, if possible.
 func (r MetadataResult) Extract() (map[string]string, error) {
-	if r.Err != nil {
-		return nil, r.Err
+	var s struct {
+		Metadata map[string]string `json:"metadata"`
 	}
-
-	var response struct {
-		Metadata map[string]string `mapstructure:"metadata"`
-	}
-
-	err := mapstructure.Decode(r.Body, &response)
-	return response.Metadata, err
+	err := r.ExtractInto(&s)
+	return s.Metadata, err
 }
 
 // Extract interprets any MetadatumResult as a Metadatum, if possible.
 func (r MetadatumResult) Extract() (map[string]string, error) {
-	if r.Err != nil {
-		return nil, r.Err
+	var s struct {
+		Metadatum map[string]string `json:"meta"`
 	}
-
-	var response struct {
-		Metadatum map[string]string `mapstructure:"meta"`
-	}
-
-	err := mapstructure.Decode(r.Body, &response)
-	return response.Metadatum, err
-}
-
-func toMapFromString(from reflect.Kind, to reflect.Kind, data interface{}) (interface{}, error) {
-	if (from == reflect.String) && (to == reflect.Map) {
-		return map[string]interface{}{}, nil
-	}
-	return data, nil
+	err := r.ExtractInto(&s)
+	return s.Metadatum, err
 }
 
 // Address represents an IP address.
 type Address struct {
-	Version int    `mapstructure:"version"`
-	Address string `mapstructure:"addr"`
+	Version int    `json:"version"`
+	Address string `json:"addr"`
 }
 
 // AddressPage abstracts the raw results of making a ListAddresses() request against the API.
@@ -313,27 +253,18 @@
 // IsEmpty returns true if an AddressPage contains no networks.
 func (r AddressPage) IsEmpty() (bool, error) {
 	addresses, err := ExtractAddresses(r)
-	if err != nil {
-		return true, err
-	}
-	return len(addresses) == 0, nil
+	return len(addresses) == 0, err
 }
 
 // ExtractAddresses interprets the results of a single page from a ListAddresses() call,
 // producing a map of addresses.
 func ExtractAddresses(page pagination.Page) (map[string][]Address, error) {
-	casted := page.(AddressPage).Body
-
-	var response struct {
-		Addresses map[string][]Address `mapstructure:"addresses"`
+	r := page.(AddressPage)
+	var s struct {
+		Addresses map[string][]Address `json:"addresses"`
 	}
-
-	err := mapstructure.Decode(casted, &response)
-	if err != nil {
-		return nil, err
-	}
-
-	return response.Addresses, err
+	err := r.ExtractInto(&s)
+	return s.Addresses, err
 }
 
 // NetworkAddressPage abstracts the raw results of making a ListAddressesByNetwork() request against the API.
@@ -346,27 +277,23 @@
 // IsEmpty returns true if a NetworkAddressPage contains no addresses.
 func (r NetworkAddressPage) IsEmpty() (bool, error) {
 	addresses, err := ExtractNetworkAddresses(r)
-	if err != nil {
-		return true, err
-	}
-	return len(addresses) == 0, nil
+	return len(addresses) == 0, err
 }
 
 // ExtractNetworkAddresses interprets the results of a single page from a ListAddressesByNetwork() call,
 // producing a slice of addresses.
 func ExtractNetworkAddresses(page pagination.Page) ([]Address, error) {
-	casted := page.(NetworkAddressPage).Body
-
-	var response map[string][]Address
-	err := mapstructure.Decode(casted, &response)
+	r := page.(NetworkAddressPage)
+	var s map[string][]Address
+	err := r.ExtractInto(&s)
 	if err != nil {
 		return nil, err
 	}
 
 	var key string
-	for k := range response {
+	for k := range s {
 		key = k
 	}
 
-	return response[key], err
+	return s[key], err
 }