github.com/GoogleCloudPlatform/terraformer@v0.8.18/providers/gcp/pubsub.go (about)

     1  // Copyright 2018 The Terraformer Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package gcp
    16  
    17  import (
    18  	"context"
    19  	"log"
    20  	"strings"
    21  
    22  	"google.golang.org/api/pubsub/v1"
    23  
    24  	"github.com/GoogleCloudPlatform/terraformer/terraformutils"
    25  )
    26  
    27  var pubsubAllowEmptyValues = []string{""}
    28  
    29  var pubsubAdditionalFields = map[string]interface{}{}
    30  
    31  type PubsubGenerator struct {
    32  	GCPService
    33  }
    34  
    35  // Run on subscriptionsList and create for each TerraformResource
    36  func (g PubsubGenerator) createSubscriptionsResources(ctx context.Context, subscriptionsList *pubsub.ProjectsSubscriptionsListCall) []terraformutils.Resource {
    37  	resources := []terraformutils.Resource{}
    38  	if err := subscriptionsList.Pages(ctx, func(page *pubsub.ListSubscriptionsResponse) error {
    39  		for _, obj := range page.Subscriptions {
    40  			t := strings.Split(obj.Name, "/")
    41  			name := t[len(t)-1]
    42  			resources = append(resources, terraformutils.NewResource(
    43  				name,
    44  				obj.Name,
    45  				"google_pubsub_subscription",
    46  				g.ProviderName,
    47  				map[string]string{
    48  					"name":    name,
    49  					"project": g.GetArgs()["project"].(string),
    50  				},
    51  				pubsubAllowEmptyValues,
    52  				pubsubAdditionalFields,
    53  			))
    54  		}
    55  		return nil
    56  	}); err != nil {
    57  		log.Println(err)
    58  	}
    59  	return resources
    60  }
    61  
    62  // Run on topicsList and create for each TerraformResource
    63  func (g PubsubGenerator) createTopicsListResources(ctx context.Context, topicsList *pubsub.ProjectsTopicsListCall) []terraformutils.Resource {
    64  	resources := []terraformutils.Resource{}
    65  	if err := topicsList.Pages(ctx, func(page *pubsub.ListTopicsResponse) error {
    66  		for _, obj := range page.Topics {
    67  			t := strings.Split(obj.Name, "/")
    68  			name := t[len(t)-1]
    69  			resources = append(resources, terraformutils.NewResource(
    70  				g.GetArgs()["project"].(string)+"/"+name,
    71  				obj.Name,
    72  				"google_pubsub_topic",
    73  				g.ProviderName,
    74  				map[string]string{
    75  					"name":    name,
    76  					"project": g.GetArgs()["project"].(string),
    77  				},
    78  				pubsubAllowEmptyValues,
    79  				pubsubAdditionalFields,
    80  			))
    81  		}
    82  		return nil
    83  	}); err != nil {
    84  		log.Println(err)
    85  	}
    86  	return resources
    87  }
    88  
    89  // Generate TerraformResources from GCP API,
    90  func (g *PubsubGenerator) InitResources() error {
    91  	ctx := context.Background()
    92  	pubsubService, err := pubsub.NewService(ctx)
    93  	if err != nil {
    94  		return err
    95  	}
    96  
    97  	subscriptionsList := pubsubService.Projects.Subscriptions.List("projects/" + g.GetArgs()["project"].(string))
    98  	subscriptionsResources := g.createSubscriptionsResources(ctx, subscriptionsList)
    99  
   100  	topicsList := pubsubService.Projects.Topics.List("projects/" + g.GetArgs()["project"].(string))
   101  	topicsResources := g.createTopicsListResources(ctx, topicsList)
   102  
   103  	g.Resources = append(g.Resources, subscriptionsResources...)
   104  	g.Resources = append(g.Resources, topicsResources...)
   105  
   106  	return nil
   107  }
   108  
   109  func (g *PubsubGenerator) PostConvertHook() error {
   110  	for i, r := range g.Resources {
   111  		for _, topic := range g.Resources {
   112  			if r.InstanceState.Attributes["topic"] == "projects/"+g.GetArgs()["project"].(string)+"/topics/"+topic.InstanceState.Attributes["name"] {
   113  				g.Resources[i].Item["topic"] = "${google_pubsub_topic." + topic.ResourceName + ".name}"
   114  			}
   115  		}
   116  	}
   117  	return nil
   118  }