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resource_consul_service.go
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resource_consul_service.go
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package consul
import (
"fmt"
consulapi "github.com/hashicorp/consul/api"
"github.com/hashicorp/terraform/helper/schema"
)
func resourceConsulService() *schema.Resource {
return &schema.Resource{
Create: resourceConsulServiceCreate,
Update: resourceConsulServiceCreate,
Read: resourceConsulServiceRead,
Delete: resourceConsulServiceDelete,
Schema: map[string]*schema.Schema{
"address": &schema.Schema{
Type: schema.TypeString,
Optional: true,
Computed: true,
ForceNew: true,
},
"service_id": &schema.Schema{
Type: schema.TypeString,
Optional: true,
Computed: true,
ForceNew: true,
},
"name": &schema.Schema{
Type: schema.TypeString,
Required: true,
},
"port": &schema.Schema{
Type: schema.TypeInt,
Optional: true,
ForceNew: true,
},
"tags": &schema.Schema{
Type: schema.TypeList,
Optional: true,
Elem: &schema.Schema{Type: schema.TypeString},
ForceNew: true,
},
},
}
}
func resourceConsulServiceCreate(d *schema.ResourceData, meta interface{}) error {
client := meta.(*consulapi.Client)
agent := client.Agent()
name := d.Get("name").(string)
identifier := name
if serviceId, ok := d.GetOk("service_id"); ok {
identifier = serviceId.(string)
}
registration := consulapi.AgentServiceRegistration{Name: name, ID: identifier}
if address, ok := d.GetOk("address"); ok {
registration.Address = address.(string)
}
if port, ok := d.GetOk("port"); ok {
registration.Port = port.(int)
}
if v, ok := d.GetOk("tags"); ok {
vs := v.([]interface{})
s := make([]string, len(vs))
for i, raw := range vs {
s[i] = raw.(string)
}
registration.Tags = s
}
if err := agent.ServiceRegister(®istration); err != nil {
return fmt.Errorf("Failed to register service '%s' with Consul agent: %v", name, err)
}
// Update the resource
if serviceMap, err := agent.Services(); err != nil {
return fmt.Errorf("Failed to read services from Consul agent: %v", err)
} else if service, ok := serviceMap[identifier]; !ok {
return fmt.Errorf("Failed to read service '%s' from Consul agent: %v", identifier, err)
} else {
d.SetId(service.ID)
d.Set("address", service.Address)
d.Set("service_id", service.ID)
d.Set("name", service.Service)
d.Set("port", service.Port)
tags := make([]string, 0, len(service.Tags))
for _, tag := range service.Tags {
tags = append(tags, tag)
}
d.Set("tags", tags)
}
return nil
}
func resourceConsulServiceRead(d *schema.ResourceData, meta interface{}) error {
client := meta.(*consulapi.Client)
agent := client.Agent()
name := d.Get("name").(string)
identifier := name
if serviceId, ok := d.GetOk("service_id"); ok {
identifier = serviceId.(string)
}
if services, err := agent.Services(); err != nil {
return fmt.Errorf("Failed to get services from Consul agent: %v", err)
} else if service, ok := services[identifier]; !ok {
return fmt.Errorf("Failed to get service '%s' from Consul agent", identifier)
} else {
d.SetId(service.ID)
d.Set("address", service.Address)
d.Set("service_id", service.ID)
d.Set("name", service.Service)
d.Set("port", service.Port)
tags := make([]string, 0, len(service.Tags))
for _, tag := range service.Tags {
tags = append(tags, tag)
}
d.Set("tags", tags)
}
return nil
}
func resourceConsulServiceDelete(d *schema.ResourceData, meta interface{}) error {
client := meta.(*consulapi.Client)
catalog := client.Agent()
id := d.Get("service_id").(string)
if err := catalog.ServiceDeregister(id); err != nil {
return fmt.Errorf("Failed to deregister service '%s' from Consul agent: %v", id, err)
}
// Clear the ID
d.SetId("")
return nil
}