terraform/builtin/providers/google/provider.go

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package google
import (
"encoding/json"
"fmt"
"strings"
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"github.com/hashicorp/terraform/helper/schema"
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"github.com/hashicorp/terraform/terraform"
"google.golang.org/api/compute/v1"
"google.golang.org/api/googleapi"
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)
// Provider returns a terraform.ResourceProvider.
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func Provider() terraform.ResourceProvider {
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return &schema.Provider{
Schema: map[string]*schema.Schema{
"credentials": &schema.Schema{
Type: schema.TypeString,
Optional: true,
DefaultFunc: schema.MultiEnvDefaultFunc([]string{
"GOOGLE_CREDENTIALS",
"GOOGLE_CLOUD_KEYFILE_JSON",
"GCLOUD_KEYFILE_JSON",
}, nil),
ValidateFunc: validateCredentials,
},
"project": &schema.Schema{
Type: schema.TypeString,
Optional: true,
DefaultFunc: schema.MultiEnvDefaultFunc([]string{
"GOOGLE_PROJECT",
"GCLOUD_PROJECT",
"CLOUDSDK_CORE_PROJECT",
}, nil),
},
"region": &schema.Schema{
Type: schema.TypeString,
Required: true,
DefaultFunc: schema.MultiEnvDefaultFunc([]string{
"GOOGLE_REGION",
"GCLOUD_REGION",
"CLOUDSDK_COMPUTE_REGION",
}, nil),
},
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},
DataSourcesMap: map[string]*schema.Resource{
"google_compute_network": dataSourceGoogleComputeNetwork(),
"google_compute_subnetwork": dataSourceGoogleComputeSubnetwork(),
"google_compute_zones": dataSourceGoogleComputeZones(),
"google_iam_policy": dataSourceGoogleIamPolicy(),
},
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ResourcesMap: map[string]*schema.Resource{
"google_bigquery_dataset": resourceBigQueryDataset(),
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"google_compute_autoscaler": resourceComputeAutoscaler(),
"google_compute_address": resourceComputeAddress(),
"google_compute_backend_bucket": resourceComputeBackendBucket(),
"google_compute_backend_service": resourceComputeBackendService(),
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"google_compute_disk": resourceComputeDisk(),
"google_compute_firewall": resourceComputeFirewall(),
"google_compute_forwarding_rule": resourceComputeForwardingRule(),
"google_compute_global_address": resourceComputeGlobalAddress(),
"google_compute_global_forwarding_rule": resourceComputeGlobalForwardingRule(),
"google_compute_health_check": resourceComputeHealthCheck(),
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"google_compute_http_health_check": resourceComputeHttpHealthCheck(),
"google_compute_https_health_check": resourceComputeHttpsHealthCheck(),
"google_compute_image": resourceComputeImage(),
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"google_compute_instance": resourceComputeInstance(),
"google_compute_instance_group": resourceComputeInstanceGroup(),
"google_compute_instance_group_manager": resourceComputeInstanceGroupManager(),
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"google_compute_instance_template": resourceComputeInstanceTemplate(),
"google_compute_network": resourceComputeNetwork(),
"google_compute_project_metadata": resourceComputeProjectMetadata(),
"google_compute_region_backend_service": resourceComputeRegionBackendService(),
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"google_compute_route": resourceComputeRoute(),
"google_compute_ssl_certificate": resourceComputeSslCertificate(),
"google_compute_subnetwork": resourceComputeSubnetwork(),
"google_compute_target_http_proxy": resourceComputeTargetHttpProxy(),
"google_compute_target_https_proxy": resourceComputeTargetHttpsProxy(),
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"google_compute_target_pool": resourceComputeTargetPool(),
"google_compute_url_map": resourceComputeUrlMap(),
"google_compute_vpn_gateway": resourceComputeVpnGateway(),
"google_compute_vpn_tunnel": resourceComputeVpnTunnel(),
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"google_container_cluster": resourceContainerCluster(),
"google_container_node_pool": resourceContainerNodePool(),
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"google_dns_managed_zone": resourceDnsManagedZone(),
"google_dns_record_set": resourceDnsRecordSet(),
"google_sql_database": resourceSqlDatabase(),
"google_sql_database_instance": resourceSqlDatabaseInstance(),
"google_sql_user": resourceSqlUser(),
"google_project": resourceGoogleProject(),
"google_project_iam_policy": resourceGoogleProjectIamPolicy(),
"google_project_services": resourceGoogleProjectServices(),
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"google_pubsub_topic": resourcePubsubTopic(),
"google_pubsub_subscription": resourcePubsubSubscription(),
"google_service_account": resourceGoogleServiceAccount(),
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"google_storage_bucket": resourceStorageBucket(),
"google_storage_bucket_acl": resourceStorageBucketAcl(),
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"google_storage_bucket_object": resourceStorageBucketObject(),
"google_storage_object_acl": resourceStorageObjectAcl(),
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},
ConfigureFunc: providerConfigure,
}
}
func providerConfigure(d *schema.ResourceData) (interface{}, error) {
credentials := d.Get("credentials").(string)
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config := Config{
Credentials: credentials,
Project: d.Get("project").(string),
Region: d.Get("region").(string),
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}
if err := config.loadAndValidate(); err != nil {
return nil, err
}
return &config, nil
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}
func validateCredentials(v interface{}, k string) (warnings []string, errors []error) {
if v == nil || v.(string) == "" {
return
}
creds := v.(string)
var account accountFile
if err := json.Unmarshal([]byte(creds), &account); err != nil {
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errors = append(errors,
fmt.Errorf("credentials are not valid JSON '%s': %s", creds, err))
}
return
}
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// getRegionFromZone returns the region from a zone for Google cloud.
func getRegionFromZone(zone string) string {
if zone != "" && len(zone) > 2 {
region := zone[:len(zone)-2]
return region
}
return ""
}
// getRegion reads the "region" field from the given resource data and falls
// back to the provider's value if not given. If the provider's value is not
// given, an error is returned.
func getRegion(d *schema.ResourceData, config *Config) (string, error) {
res, ok := d.GetOk("region")
if !ok {
if config.Region != "" {
return config.Region, nil
}
return "", fmt.Errorf("%q: required field is not set", "region")
}
return res.(string), nil
}
// getProject reads the "project" field from the given resource data and falls
// back to the provider's value if not given. If the provider's value is not
// given, an error is returned.
func getProject(d *schema.ResourceData, config *Config) (string, error) {
res, ok := d.GetOk("project")
if !ok {
if config.Project != "" {
return config.Project, nil
}
return "", fmt.Errorf("%q: required field is not set", "project")
}
return res.(string), nil
}
func getZonalResourceFromRegion(getResource func(string) (interface{}, error), region string, compute *compute.Service, project string) (interface{}, error) {
zoneList, err := compute.Zones.List(project).Do()
if err != nil {
return nil, err
}
var resource interface{}
for _, zone := range zoneList.Items {
if strings.Contains(zone.Name, region) {
resource, err = getResource(zone.Name)
if err != nil {
if gerr, ok := err.(*googleapi.Error); ok && gerr.Code == 404 {
// Resource was not found in this zone
continue
}
return nil, fmt.Errorf("Error reading Resource: %s", err)
}
// Resource was found
return resource, nil
}
}
// Resource does not exist in this region
return nil, nil
}
// getNetworkLink reads the "network" field from the given resource data and if the value:
// - is a resource URL, returns the string unchanged
// - is the network name only, then looks up the resource URL using the google client
func getNetworkLink(d *schema.ResourceData, config *Config, field string) (string, error) {
if v, ok := d.GetOk(field); ok {
network := v.(string)
project, err := getProject(d, config)
if err != nil {
return "", err
}
if !strings.HasPrefix(network, "https://www.googleapis.com/compute/") {
// Network value provided is just the name, lookup the network SelfLink
networkData, err := config.clientCompute.Networks.Get(
project, network).Do()
if err != nil {
return "", fmt.Errorf("Error reading network: %s", err)
}
network = networkData.SelfLink
}
return network, nil
} else {
return "", nil
}
}
// getNetworkName reads the "network" field from the given resource data and if the value:
// - is a resource URL, extracts the network name from the URL and returns it
// - is the network name only (i.e not prefixed with http://www.googleapis.com/compute/...), is returned unchanged
func getNetworkName(d *schema.ResourceData, field string) (string, error) {
if v, ok := d.GetOk(field); ok {
network := v.(string)
return getNetworkNameFromSelfLink(network)
}
return "", nil
}
func getNetworkNameFromSelfLink(network string) (string, error) {
if strings.HasPrefix(network, "https://www.googleapis.com/compute/") {
// extract the network name from SelfLink URL
networkName := network[strings.LastIndex(network, "/")+1:]
if networkName == "" {
return "", fmt.Errorf("network url not valid")
}
return networkName, nil
}
return network, nil
}