terraform/builtin/providers/azurerm/resource_arm_route_table.go

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package azurerm
import (
"bytes"
"fmt"
"log"
"net/http"
"strings"
"github.com/Azure/azure-sdk-for-go/arm/network"
"github.com/hashicorp/terraform/helper/hashcode"
"github.com/hashicorp/terraform/helper/schema"
)
func resourceArmRouteTable() *schema.Resource {
return &schema.Resource{
Create: resourceArmRouteTableCreate,
Read: resourceArmRouteTableRead,
Update: resourceArmRouteTableCreate,
Delete: resourceArmRouteTableDelete,
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Importer: &schema.ResourceImporter{
State: schema.ImportStatePassthrough,
},
Schema: map[string]*schema.Schema{
"name": {
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"location": locationSchema(),
"resource_group_name": {
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"route": {
Type: schema.TypeSet,
Optional: true,
Computed: true,
Elem: &schema.Resource{
Schema: map[string]*schema.Schema{
"name": {
Type: schema.TypeString,
Required: true,
},
"address_prefix": {
Type: schema.TypeString,
Required: true,
},
"next_hop_type": {
Type: schema.TypeString,
Required: true,
ValidateFunc: validateRouteTableNextHopType,
},
"next_hop_in_ip_address": {
Type: schema.TypeString,
Optional: true,
Computed: true,
},
},
},
Set: resourceArmRouteTableRouteHash,
},
"subnets": {
Type: schema.TypeSet,
Computed: true,
Elem: &schema.Schema{Type: schema.TypeString},
Set: schema.HashString,
},
"tags": tagsSchema(),
},
}
}
func resourceArmRouteTableCreate(d *schema.ResourceData, meta interface{}) error {
client := meta.(*ArmClient)
routeTablesClient := client.routeTablesClient
log.Printf("[INFO] preparing arguments for Azure ARM Route Table creation.")
name := d.Get("name").(string)
location := d.Get("location").(string)
resGroup := d.Get("resource_group_name").(string)
tags := d.Get("tags").(map[string]interface{})
routeSet := network.RouteTable{
Name: &name,
Location: &location,
Tags: expandTags(tags),
}
if _, ok := d.GetOk("route"); ok {
routes, routeErr := expandAzureRmRouteTableRoutes(d)
if routeErr != nil {
return fmt.Errorf("Error Building list of Route Table Routes: %s", routeErr)
}
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if len(routes) > 0 {
routeSet.RouteTablePropertiesFormat = &network.RouteTablePropertiesFormat{
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Routes: &routes,
}
}
}
_, err := routeTablesClient.CreateOrUpdate(resGroup, name, routeSet, make(chan struct{}))
if err != nil {
return err
}
read, err := routeTablesClient.Get(resGroup, name, "")
if err != nil {
return err
}
if read.ID == nil {
return fmt.Errorf("Cannot read Route Table %s (resource group %s) ID", name, resGroup)
}
d.SetId(*read.ID)
return resourceArmRouteTableRead(d, meta)
}
func resourceArmRouteTableRead(d *schema.ResourceData, meta interface{}) error {
routeTablesClient := meta.(*ArmClient).routeTablesClient
id, err := parseAzureResourceID(d.Id())
if err != nil {
return err
}
resGroup := id.ResourceGroup
name := id.Path["routeTables"]
resp, err := routeTablesClient.Get(resGroup, name, "")
provider/azurerm: Reordering the checks after an Azure API Get We are receiving suggestions of a panic as follows: ``` 2016/09/01 07:21:55 [DEBUG] plugin: terraform: panic: runtime error: invalid memory address or nil pointer dereference 2016/09/01 07:21:55 [DEBUG] plugin: terraform: [signal SIGSEGV: segmentation violation code=0x1 addr=0x10 pc=0xa3170f] 2016/09/01 07:21:55 [DEBUG] plugin: terraform: 2016/09/01 07:21:55 [DEBUG] plugin: terraform: goroutine 114 [running]: 2016/09/01 07:21:55 [DEBUG] plugin: terraform: panic(0x27f4e60, 0xc4200100e0) 2016/09/01 07:21:55 [DEBUG] plugin: terraform: /opt/go/src/runtime/panic.go:500 +0x1a1 2016/09/01 07:21:55 [DEBUG] plugin: terraform: github.com/hashicorp/terraform/builtin/providers/azurerm.resourceArmVirtualMachineRead(0xc4206d8060, 0x2995620, 0xc4204d0000, 0x0, 0x17) 2016/09/01 07:21:55 [DEBUG] plugin: terraform: /opt/gopath/src/github.com/hashicorp/terraform/builtin/providers/azurerm/resource_arm_virtual_machine.go:488 +0x1ff 2016/09/01 07:21:55 [DEBUG] plugin: terraform: github.com/hashicorp/terraform/helper/schema.(*Resource).Refresh(0xc420017a40, 0xc42040c780, 0x2995620, 0xc4204d0000, 0xc42019c990, 0x1, 0x0) ``` This is because the code is as follows: ``` resp, err := client.Get(resGroup, vnetName, name) if resp.StatusCode == http.StatusNotFound { d.SetId("") return nil } if err != nil { return fmt.Errorf("Error making Read request on Azure virtual network peering %s: %s", name, err) } ``` When a request throws an error, the response object isn't valid. Therefore, we need to flip that code to check the error first ``` resp, err := client.Get(resGroup, vnetName, name) if err != nil { return fmt.Errorf("Error making Read request on Azure virtual network peering %s: %s", name, err) } if resp.StatusCode == http.StatusNotFound { d.SetId("") return nil } ```
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if err != nil {
if resp.StatusCode == http.StatusNotFound {
d.SetId("")
return nil
}
provider/azurerm: Reordering the checks after an Azure API Get We are receiving suggestions of a panic as follows: ``` 2016/09/01 07:21:55 [DEBUG] plugin: terraform: panic: runtime error: invalid memory address or nil pointer dereference 2016/09/01 07:21:55 [DEBUG] plugin: terraform: [signal SIGSEGV: segmentation violation code=0x1 addr=0x10 pc=0xa3170f] 2016/09/01 07:21:55 [DEBUG] plugin: terraform: 2016/09/01 07:21:55 [DEBUG] plugin: terraform: goroutine 114 [running]: 2016/09/01 07:21:55 [DEBUG] plugin: terraform: panic(0x27f4e60, 0xc4200100e0) 2016/09/01 07:21:55 [DEBUG] plugin: terraform: /opt/go/src/runtime/panic.go:500 +0x1a1 2016/09/01 07:21:55 [DEBUG] plugin: terraform: github.com/hashicorp/terraform/builtin/providers/azurerm.resourceArmVirtualMachineRead(0xc4206d8060, 0x2995620, 0xc4204d0000, 0x0, 0x17) 2016/09/01 07:21:55 [DEBUG] plugin: terraform: /opt/gopath/src/github.com/hashicorp/terraform/builtin/providers/azurerm/resource_arm_virtual_machine.go:488 +0x1ff 2016/09/01 07:21:55 [DEBUG] plugin: terraform: github.com/hashicorp/terraform/helper/schema.(*Resource).Refresh(0xc420017a40, 0xc42040c780, 0x2995620, 0xc4204d0000, 0xc42019c990, 0x1, 0x0) ``` This is because the code is as follows: ``` resp, err := client.Get(resGroup, vnetName, name) if resp.StatusCode == http.StatusNotFound { d.SetId("") return nil } if err != nil { return fmt.Errorf("Error making Read request on Azure virtual network peering %s: %s", name, err) } ``` When a request throws an error, the response object isn't valid. Therefore, we need to flip that code to check the error first ``` resp, err := client.Get(resGroup, vnetName, name) if err != nil { return fmt.Errorf("Error making Read request on Azure virtual network peering %s: %s", name, err) } if resp.StatusCode == http.StatusNotFound { d.SetId("") return nil } ```
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return fmt.Errorf("Error making Read request on Azure Route Table %s: %s", name, err)
}
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d.Set("name", name)
d.Set("resource_group_name", resGroup)
d.Set("location", resp.Location)
if resp.RouteTablePropertiesFormat.Routes != nil {
d.Set("route", schema.NewSet(resourceArmRouteTableRouteHash, flattenAzureRmRouteTableRoutes(resp.RouteTablePropertiesFormat.Routes)))
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}
subnets := []string{}
if resp.RouteTablePropertiesFormat.Subnets != nil {
for _, subnet := range *resp.RouteTablePropertiesFormat.Subnets {
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id := subnet.ID
subnets = append(subnets, *id)
}
}
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d.Set("subnets", subnets)
flattenAndSetTags(d, resp.Tags)
return nil
}
func resourceArmRouteTableDelete(d *schema.ResourceData, meta interface{}) error {
routeTablesClient := meta.(*ArmClient).routeTablesClient
id, err := parseAzureResourceID(d.Id())
if err != nil {
return err
}
resGroup := id.ResourceGroup
name := id.Path["routeTables"]
_, err = routeTablesClient.Delete(resGroup, name, make(chan struct{}))
return err
}
func expandAzureRmRouteTableRoutes(d *schema.ResourceData) ([]network.Route, error) {
configs := d.Get("route").(*schema.Set).List()
routes := make([]network.Route, 0, len(configs))
for _, configRaw := range configs {
data := configRaw.(map[string]interface{})
address_prefix := data["address_prefix"].(string)
next_hop_type := data["next_hop_type"].(string)
properties := network.RoutePropertiesFormat{
AddressPrefix: &address_prefix,
NextHopType: network.RouteNextHopType(next_hop_type),
}
if v := data["next_hop_in_ip_address"].(string); v != "" {
properties.NextHopIPAddress = &v
}
name := data["name"].(string)
route := network.Route{
Name: &name,
RoutePropertiesFormat: &properties,
}
routes = append(routes, route)
}
return routes, nil
}
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func flattenAzureRmRouteTableRoutes(routes *[]network.Route) []interface{} {
results := make([]interface{}, 0, len(*routes))
for _, route := range *routes {
r := make(map[string]interface{})
r["name"] = *route.Name
r["address_prefix"] = *route.RoutePropertiesFormat.AddressPrefix
r["next_hop_type"] = string(route.RoutePropertiesFormat.NextHopType)
if route.RoutePropertiesFormat.NextHopIPAddress != nil {
r["next_hop_in_ip_address"] = *route.RoutePropertiesFormat.NextHopIPAddress
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}
results = append(results, r)
}
return results
}
func resourceArmRouteTableRouteHash(v interface{}) int {
var buf bytes.Buffer
m := v.(map[string]interface{})
buf.WriteString(fmt.Sprintf("%s-", m["name"].(string)))
buf.WriteString(fmt.Sprintf("%s-", m["address_prefix"].(string)))
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buf.WriteString(fmt.Sprintf("%s-", strings.ToLower(m["next_hop_type"].(string))))
return hashcode.String(buf.String())
}
func validateRouteTableNextHopType(v interface{}, k string) (ws []string, errors []error) {
value := strings.ToLower(v.(string))
hopTypes := map[string]bool{
"virtualnetworkgateway": true,
"vnetlocal": true,
"internet": true,
"virtualappliance": true,
"none": true,
}
if !hopTypes[value] {
errors = append(errors, fmt.Errorf("Route Table NextHopType Protocol can only be VirtualNetworkGateway, VnetLocal, Internet or VirtualAppliance"))
}
return
}