Merge pull request hashicorp#1 from maxenglander/2087-consul-service-resource

Feature request: consul_service resource

Author: maxenglander

builtin/providers/consul/config.go

@@ -9,6 +9,7 @@ import (
 type Config struct {
 	Datacenter string `mapstructure:"datacenter"`
 	Address    string `mapstructure:"address"`
+	Token      string `mapstructure:"token"`
 	Scheme     string `mapstructure:"scheme"`
 }
 
@@ -25,6 +26,9 @@ func (c *Config) Client() (*consulapi.Client, error) {
 	if c.Scheme != "" {
 		config.Scheme = c.Scheme
 	}
+	if c.Token != "" {
+		config.Token = c.Token
+	}
 	client, err := consulapi.NewClient(config)
 
 	log.Printf("[INFO] Consul Client configured with address: '%s', scheme: '%s', datacenter: '%s'",

builtin/providers/consul/get_dc.go

@@ -0,0 +1,17 @@
+package consul
+
+import (
+	"fmt"
+
+	consulapi "github.com/hashicorp/consul/api"
+)
+
+// getDC is used to get the datacenter of the local agent
+func getDC(client *consulapi.Client) (string, error) {
+	info, err := client.Agent().Self()
+	if err != nil {
+		return "", fmt.Errorf("Failed to get datacenter from Consul agent: %v", err)
+	}
+	dc := info["Config"]["Datacenter"].(string)
+	return dc, nil
+}

builtin/providers/consul/resource_consul_agent_service.go

@@ -0,0 +1,135 @@
+package consul
+
+import (
+	"fmt"
+
+	consulapi "github.com/hashicorp/consul/api"
+	"github.com/hashicorp/terraform/helper/schema"
+)
+
+func resourceConsulAgentService() *schema.Resource {
+	return &schema.Resource{
+		Create: resourceConsulAgentServiceCreate,
+		Update: resourceConsulAgentServiceCreate,
+		Read:   resourceConsulAgentServiceRead,
+		Delete: resourceConsulAgentServiceDelete,
+
+		Schema: map[string]*schema.Schema{
+			"address": &schema.Schema{
+				Type:     schema.TypeString,
+				Optional: true,
+				Computed: true,
+				ForceNew: true,
+			},
+
+			"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 resourceConsulAgentServiceCreate(d *schema.ResourceData, meta interface{}) error {
+	client := meta.(*consulapi.Client)
+	agent := client.Agent()
+
+	name := d.Get("name").(string)
+	registration := consulapi.AgentServiceRegistration{Name: name}
+
+	if address, ok := d.GetOk("address"); ok {
+		registration.Address = address.(string)
+	}
+
+	if id, ok := d.GetOk("id"); ok {
+		registration.ID = id.(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(&registration); 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[name]; !ok {
+		return fmt.Errorf("Failed to read service '%s' from Consul agent: %v", name, err)
+	} else {
+		d.Set("address", service.Address)
+		d.Set("name", service.Service)
+		d.Set("port", service.Port)
+		d.Set("tags", service.Tags)
+		d.SetId(service.ID)
+	}
+
+	return nil
+}
+
+func resourceConsulAgentServiceRead(d *schema.ResourceData, meta interface{}) error {
+	client := meta.(*consulapi.Client)
+	agent := client.Agent()
+
+	name := d.Get("name").(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[name]; !ok {
+		return fmt.Errorf("Failed to get service '%s' from Consul agent", name)
+	} else {
+		d.Set("address", service.Address)
+		d.Set("name", service.Service)
+		d.Set("port", service.Port)
+		d.Set("tags", service.Tags)
+		d.SetId(service.ID)
+	}
+
+	return nil
+}
+
+func resourceConsulAgentServiceDelete(d *schema.ResourceData, meta interface{}) error {
+	client := meta.(*consulapi.Client)
+	catalog := client.Agent()
+
+	name := d.Get("name").(string)
+
+	if err := catalog.ServiceDeregister(name); err != nil {
+		return fmt.Errorf("Failed to deregister service '%s' from Consul agent: %v", name, err)
+	}
+
+	// Clear the ID
+	d.SetId("")
+	return nil
+}

builtin/providers/consul/resource_consul_agent_service_test.go

@@ -0,0 +1,85 @@
+package consul
+
+import (
+	"fmt"
+	"testing"
+
+	consulapi "github.com/hashicorp/consul/api"
+	"github.com/hashicorp/terraform/helper/resource"
+	"github.com/hashicorp/terraform/terraform"
+)
+
+func TestAccConsulAgentService_basic(t *testing.T) {
+	resource.Test(t, resource.TestCase{
+		PreCheck:     func() {},
+		Providers:    testAccProviders,
+		CheckDestroy: testAccCheckConsulAgentServiceDestroy,
+		Steps: []resource.TestStep{
+			resource.TestStep{
+				Config: testAccConsulAgentServiceConfig,
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckConsulAgentServiceExists(),
+					testAccCheckConsulAgentServiceValue("consul_agent_service.app", "address", "www.google.com"),
+					testAccCheckConsulAgentServiceValue("consul_agent_service.app", "id", "google"),
+					testAccCheckConsulAgentServiceValue("consul_agent_service.app", "name", "google"),
+				),
+			},
+		},
+	})
+}
+
+func testAccCheckConsulAgentServiceDestroy(s *terraform.State) error {
+	agent := testAccProvider.Meta().(*consulapi.Client).Agent()
+	services, err := agent.Services()
+	if err != nil {
+		return fmt.Errorf("Could not retrieve services: %#v", err)
+	}
+	_, ok := services["google"]
+	if ok {
+		return fmt.Errorf("Service still exists: %#v", "google")
+	}
+	return nil
+}
+
+func testAccCheckConsulAgentServiceExists() resource.TestCheckFunc {
+	return func(s *terraform.State) error {
+		agent := testAccProvider.Meta().(*consulapi.Client).Agent()
+		services, err := agent.Services()
+		if err != nil {
+			return err
+		}
+		_, ok := services["google"]
+		if !ok {
+			return fmt.Errorf("Service does not exist: %#v", "google")
+		}
+		return nil
+	}
+}
+
+func testAccCheckConsulAgentServiceValue(n, attr, val string) resource.TestCheckFunc {
+	return func(s *terraform.State) error {
+		rn, ok := s.RootModule().Resources[n]
+		if !ok {
+			return fmt.Errorf("Resource not found")
+		}
+		out, ok := rn.Primary.Attributes[attr]
+		if !ok {
+			return fmt.Errorf("Attribute '%s' not found: %#v", attr, rn.Primary.Attributes)
+		}
+		if val != "<any>" && out != val {
+			return fmt.Errorf("Attribute '%s' value '%s' != '%s'", attr, out, val)
+		}
+		if val == "<any>" && out == "" {
+			return fmt.Errorf("Attribute '%s' value '%s'", attr, out)
+		}
+		return nil
+	}
+}
+
+const testAccConsulAgentServiceConfig = `
+resource "consul_agent_service" "app" {
+	name = "google"
+	address = "www.google.com"
+	port = 80
+}
+`