terraform/builtin/providers/azure/resource_azure_security_gro...

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package azure
import (
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"bytes"
"fmt"
"log"
"strconv"
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"github.com/hashicorp/terraform/helper/hashcode"
"github.com/hashicorp/terraform/helper/schema"
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"github.com/svanharmelen/azure-sdk-for-go/management"
"github.com/svanharmelen/azure-sdk-for-go/management/networksecuritygroup"
)
func resourceAzureSecurityGroup() *schema.Resource {
return &schema.Resource{
Create: resourceAzureSecurityGroupCreate,
Read: resourceAzureSecurityGroupRead,
Update: resourceAzureSecurityGroupUpdate,
Delete: resourceAzureSecurityGroupDelete,
Schema: map[string]*schema.Schema{
"name": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"label": &schema.Schema{
Type: schema.TypeString,
Optional: true,
Computed: true,
ForceNew: true,
},
"location": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"rule": &schema.Schema{
Type: schema.TypeSet,
Required: true,
Elem: &schema.Resource{
Schema: map[string]*schema.Schema{
"name": &schema.Schema{
Type: schema.TypeString,
Required: true,
},
"type": &schema.Schema{
Type: schema.TypeString,
Optional: true,
Default: "Inbound",
},
"priority": &schema.Schema{
Type: schema.TypeInt,
Required: true,
},
"action": &schema.Schema{
Type: schema.TypeString,
Optional: true,
Default: "Allow",
},
"source_cidr": &schema.Schema{
Type: schema.TypeString,
Required: true,
},
"source_port": &schema.Schema{
Type: schema.TypeString,
Required: true,
},
"destination_cidr": &schema.Schema{
Type: schema.TypeString,
Required: true,
},
"destination_port": &schema.Schema{
Type: schema.TypeString,
Required: true,
},
"protocol": &schema.Schema{
Type: schema.TypeString,
Optional: true,
Default: "TCP",
},
},
},
Set: resourceAzureSecurityGroupRuleHash,
},
},
}
}
func resourceAzureSecurityGroupCreate(d *schema.ResourceData, meta interface{}) (err error) {
mc := meta.(*Client).mgmtClient
name := d.Get("name").(string)
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// Compute/set the label
label := d.Get("label").(string)
if label == "" {
label = name
}
req, err := networksecuritygroup.NewClient(mc).CreateNetworkSecurityGroup(
name,
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label,
d.Get("location").(string),
)
if err != nil {
return fmt.Errorf("Error creating Network Security Group %s: %s", name, err)
}
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if err := mc.WaitForOperation(req, nil); err != nil {
return fmt.Errorf(
"Error waiting for Network Security Group %s to be created: %s", name, err)
}
d.SetId(name)
// Create all rules that are configured
if rs := d.Get("rule").(*schema.Set); rs.Len() > 0 {
// Create an empty schema.Set to hold all rules
rules := &schema.Set{
F: resourceAzureSecurityGroupRuleHash,
}
for _, rule := range rs.List() {
// Create a single rule
err := resourceAzureSecurityGroupRuleCreate(d, meta, rule.(map[string]interface{}))
// We need to update this first to preserve the correct state
rules.Add(rule)
d.Set("rule", rules)
if err != nil {
return err
}
}
}
return resourceAzureSecurityGroupRead(d, meta)
}
func resourceAzureSecurityGroupRuleCreate(
d *schema.ResourceData,
meta interface{},
rule map[string]interface{}) error {
mc := meta.(*Client).mgmtClient
// Make sure all required parameters are there
if err := verifySecurityGroupRuleParams(rule); err != nil {
return err
}
name := rule["name"].(string)
// Create the rule
req, err := networksecuritygroup.NewClient(mc).SetNetworkSecurityGroupRule(d.Id(),
networksecuritygroup.RuleRequest{
Name: name,
Type: networksecuritygroup.RuleType(rule["type"].(string)),
Priority: rule["priority"].(int),
Action: networksecuritygroup.RuleAction(rule["action"].(string)),
SourceAddressPrefix: rule["source_cidr"].(string),
SourcePortRange: rule["source_port"].(string),
DestinationAddressPrefix: rule["destination_cidr"].(string),
DestinationPortRange: rule["destination_port"].(string),
Protocol: networksecuritygroup.RuleProtocol(rule["protocol"].(string)),
},
)
if err != nil {
return fmt.Errorf("Error creating Network Security Group rule %s: %s", name, err)
}
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if err := mc.WaitForOperation(req, nil); err != nil {
return fmt.Errorf(
"Error waiting for Network Security Group rule %s to be created: %s", name, err)
}
return nil
}
func resourceAzureSecurityGroupRead(d *schema.ResourceData, meta interface{}) error {
mc := meta.(*Client).mgmtClient
sg, err := networksecuritygroup.NewClient(mc).GetNetworkSecurityGroup(d.Id())
if err != nil {
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if management.IsResourceNotFoundError(err) {
d.SetId("")
return nil
}
return fmt.Errorf("Error retrieving Network Security Group %s: %s", d.Id(), err)
}
d.Set("label", sg.Label)
d.Set("location", sg.Location)
// Create an empty schema.Set to hold all rules
rules := &schema.Set{
F: resourceAzureSecurityGroupRuleHash,
}
for _, r := range sg.Rules {
if !r.IsDefault {
rule := map[string]interface{}{
"name": r.Name,
"type": string(r.Type),
"priority": r.Priority,
"action": string(r.Action),
"source_cidr": r.SourceAddressPrefix,
"source_port": r.SourcePortRange,
"destination_cidr": r.DestinationAddressPrefix,
"destination_port": r.DestinationPortRange,
"protocol": string(r.Protocol),
}
rules.Add(rule)
}
}
d.Set("rule", rules)
return nil
}
func resourceAzureSecurityGroupUpdate(d *schema.ResourceData, meta interface{}) error {
// Check if the rule set as a whole has changed
if d.HasChange("rule") {
o, n := d.GetChange("rule")
ors := o.(*schema.Set).Difference(n.(*schema.Set))
nrs := n.(*schema.Set).Difference(o.(*schema.Set))
// Now first loop through all the old rules and delete any obsolete ones
for _, rule := range ors.List() {
// Delete the rule as it no longer exists in the config
err := resourceAzureSecurityGroupRuleDelete(d, meta, rule.(map[string]interface{}))
if err != nil {
return err
}
}
// Make sure we save the state of the currently configured rules
rules := o.(*schema.Set).Intersection(n.(*schema.Set))
d.Set("rule", rules)
// Then loop through al the currently configured rules and create the new ones
for _, rule := range nrs.List() {
err := resourceAzureSecurityGroupRuleCreate(d, meta, rule.(map[string]interface{}))
// We need to update this first to preserve the correct state
rules.Add(rule)
d.Set("rule", rules)
if err != nil {
return err
}
}
}
return resourceAzureSecurityGroupRead(d, meta)
}
func resourceAzureSecurityGroupDelete(d *schema.ResourceData, meta interface{}) error {
mc := meta.(*Client).mgmtClient
log.Printf("[DEBUG] Deleting Network Security Group: %s", d.Id())
req, err := networksecuritygroup.NewClient(mc).DeleteNetworkSecurityGroup(d.Id())
if err != nil {
return fmt.Errorf("Error deleting Network Security Group %s: %s", d.Id(), err)
}
// Wait until the network security group is deleted
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if err := mc.WaitForOperation(req, nil); err != nil {
return fmt.Errorf(
"Error waiting for Network Security Group %s to be deleted: %s", d.Id(), err)
}
d.SetId("")
return nil
}
func resourceAzureSecurityGroupRuleDelete(
d *schema.ResourceData, meta interface{}, rule map[string]interface{}) error {
mc := meta.(*Client).mgmtClient
name := rule["name"].(string)
// Delete the rule
req, err := networksecuritygroup.NewClient(mc).DeleteNetworkSecurityGroupRule(d.Id(), name)
if err != nil {
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if management.IsResourceNotFoundError(err) {
return nil
}
return fmt.Errorf("Error deleting Network Security Group rule %s: %s", name, err)
}
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if err := mc.WaitForOperation(req, nil); err != nil {
return fmt.Errorf(
"Error waiting for Network Security Group rule %s to be deleted: %s", name, err)
}
return nil
}
func resourceAzureSecurityGroupRuleHash(v interface{}) int {
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var buf bytes.Buffer
m := v.(map[string]interface{})
buf.WriteString(fmt.Sprintf(
"%s-%d-%s-%s-%s-%s-%s-%s",
m["type"].(string),
m["priority"].(int),
m["action"].(string),
m["source_cidr"].(string),
m["source_port"].(string),
m["destination_cidr"].(string),
m["destination_port"].(string),
m["protocol"].(string)))
return hashcode.String(buf.String())
}
func verifySecurityGroupRuleParams(rule map[string]interface{}) error {
typ := rule["type"].(string)
if typ != "Inbound" && typ != "Outbound" {
return fmt.Errorf("Parameter type only accepts 'Inbound' or 'Outbound' as values")
}
action := rule["action"].(string)
if action != "Allow" && action != "Deny" {
return fmt.Errorf("Parameter action only accepts 'Allow' or 'Deny' as values")
}
protocol := rule["protocol"].(string)
if protocol != "TCP" && protocol != "UDP" && protocol != "*" {
_, err := strconv.ParseInt(protocol, 0, 0)
if err != nil {
return fmt.Errorf(
"Parameter type only accepts 'TCP', 'UDP' or '*' as values")
}
}
return nil
}