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resource_vcd_firewall_rules.go
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resource_vcd_firewall_rules.go
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package vcd
import (
"fmt"
"log"
"strings"
"github.com/hashicorp/terraform/helper/schema"
types "github.com/hmrc/vmware-govcd/types/v56"
)
func resourceVcdFirewallRules() *schema.Resource {
return &schema.Resource{
Create: resourceVcdFirewallRulesCreate,
Delete: resourceFirewallRulesDelete,
Read: resourceFirewallRulesRead,
Schema: map[string]*schema.Schema{
"edge_gateway": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"default_action": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"rule": &schema.Schema{
Type: schema.TypeList,
Optional: true,
ForceNew: true,
Elem: &schema.Resource{
Schema: map[string]*schema.Schema{
"id": &schema.Schema{
Type: schema.TypeString,
Optional: true,
Computed: true,
},
"description": &schema.Schema{
Type: schema.TypeString,
Required: true,
},
"policy": &schema.Schema{
Type: schema.TypeString,
Required: true,
},
"protocol": &schema.Schema{
Type: schema.TypeString,
Required: true,
},
"destination_port": &schema.Schema{
Type: schema.TypeString,
Required: true,
},
"destination_ip": &schema.Schema{
Type: schema.TypeString,
Required: true,
},
"source_port": &schema.Schema{
Type: schema.TypeString,
Required: true,
},
"source_ip": &schema.Schema{
Type: schema.TypeString,
Required: true,
},
},
},
},
},
}
}
func resourceVcdFirewallRulesCreate(d *schema.ResourceData, meta interface{}) error {
vcdClient := meta.(*VCDClient)
vcdClient.Mutex.Lock()
defer vcdClient.Mutex.Unlock()
edgeGateway, err := vcdClient.OrgVdc.FindEdgeGateway(d.Get("edge_gateway").(string))
if err != nil {
return fmt.Errorf("Unable to find edge gateway: %s", err)
}
err = retryCall(vcdClient.MaxRetryTimeout, func() error {
edgeGateway.Refresh()
firewallRules, _ := expandFirewallRules(d, edgeGateway.EdgeGateway)
task, err := edgeGateway.CreateFirewallRules(d.Get("default_action").(string), firewallRules)
if err != nil {
log.Printf("[INFO] Error setting firewall rules: %s", err)
return fmt.Errorf("Error setting firewall rules: %#v", err)
}
return task.WaitTaskCompletion()
})
if err != nil {
return fmt.Errorf("Error completing tasks: %#v", err)
}
d.SetId(d.Get("edge_gateway").(string))
return resourceFirewallRulesRead(d, meta)
}
func resourceFirewallRulesDelete(d *schema.ResourceData, meta interface{}) error {
vcdClient := meta.(*VCDClient)
vcdClient.Mutex.Lock()
defer vcdClient.Mutex.Unlock()
edgeGateway, err := vcdClient.OrgVdc.FindEdgeGateway(d.Get("edge_gateway").(string))
firewallRules := deleteFirewallRules(d, edgeGateway.EdgeGateway)
defaultAction := edgeGateway.EdgeGateway.Configuration.EdgeGatewayServiceConfiguration.FirewallService.DefaultAction
task, err := edgeGateway.CreateFirewallRules(defaultAction, firewallRules)
if err != nil {
return fmt.Errorf("Error deleting firewall rules: %#v", err)
}
err = task.WaitTaskCompletion()
if err != nil {
return fmt.Errorf("Error completing tasks: %#v", err)
}
return nil
}
func resourceFirewallRulesRead(d *schema.ResourceData, meta interface{}) error {
vcdClient := meta.(*VCDClient)
edgeGateway, err := vcdClient.OrgVdc.FindEdgeGateway(d.Get("edge_gateway").(string))
if err != nil {
return fmt.Errorf("Error finding edge gateway: %#v", err)
}
ruleList := d.Get("rule").([]interface{})
firewallRules := *edgeGateway.EdgeGateway.Configuration.EdgeGatewayServiceConfiguration.FirewallService
rulesCount := d.Get("rule.#").(int)
for i := 0; i < rulesCount; i++ {
prefix := fmt.Sprintf("rule.%d", i)
if d.Get(prefix+".id").(string) == "" {
log.Printf("[INFO] Rule %d has no id. Searching...", i)
ruleid, err := matchFirewallRule(d, prefix, firewallRules.FirewallRule)
if err == nil {
currentRule := ruleList[i].(map[string]interface{})
currentRule["id"] = ruleid
ruleList[i] = currentRule
}
}
}
d.Set("rule", ruleList)
d.Set("default_action", firewallRules.DefaultAction)
return nil
}
func deleteFirewallRules(d *schema.ResourceData, gateway *types.EdgeGateway) []*types.FirewallRule {
firewallRules := gateway.Configuration.EdgeGatewayServiceConfiguration.FirewallService.FirewallRule
rulesCount := d.Get("rule.#").(int)
fwrules := make([]*types.FirewallRule, 0, len(firewallRules)-rulesCount)
for _, f := range firewallRules {
keep := true
for i := 0; i < rulesCount; i++ {
if d.Get(fmt.Sprintf("rule.%d.id", i)).(string) != f.ID {
continue
}
keep = false
}
if keep {
fwrules = append(fwrules, f)
}
}
return fwrules
}
func matchFirewallRule(d *schema.ResourceData, prefix string, rules []*types.FirewallRule) (string, error) {
for _, m := range rules {
if d.Get(prefix+".description").(string) == m.Description &&
d.Get(prefix+".policy").(string) == m.Policy &&
strings.ToLower(d.Get(prefix+".protocol").(string)) == getProtocol(*m.Protocols) &&
strings.ToLower(d.Get(prefix+".destination_port").(string)) == getPortString(m.Port) &&
strings.ToLower(d.Get(prefix+".destination_ip").(string)) == strings.ToLower(m.DestinationIP) &&
strings.ToLower(d.Get(prefix+".source_port").(string)) == getPortString(m.SourcePort) &&
strings.ToLower(d.Get(prefix+".source_ip").(string)) == strings.ToLower(m.SourceIP) {
return m.ID, nil
}
}
return "", fmt.Errorf("Unable to find rule")
}