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Listing assets using the Security Command Center API

Assets are an organization's Google Cloud resources, like Compute Engine instances or Cloud Storage buckets. This guide shows you how to use Security Command Center (Security Command Center) client libraries to access metadata about an organization's assets.

Before you begin

Before you set up a source, you'll need to complete the following:

Page Size

All Security Command Center list APIs are paginated. Each response returns a page of results and a token to return the next page. The page size is configurable. The default pageSize is 10, it can be set to a minimum of 1, and maximum of 1000.

Listing all assets

These examples show how to list all assets for an organization:

gcloud

  # ORGANIZATION_ID=12344321

  gcloud alpha scc assets list $ORGANIZATION_ID

For more examples, run:

  gcloud alpha scc assets list --help

Python

from google.cloud import securitycenter

client = securitycenter.SecurityCenterClient()
# organization_id is the numeric ID of the organization.
# organization_id = "1234567777"
org_name = "organizations/{org_id}".format(org_id=organization_id)

# Call the API and print results.
asset_iterator = client.list_assets(org_name)
for i, asset_result in enumerate(asset_iterator):
    print(i, asset_result)

Java

static ImmutableList<ListAssetsResult> listAssets(OrganizationName organizationName) {
  try (SecurityCenterClient client = SecurityCenterClient.create()) {
    // Start setting up a request for to search for all assets in an organization.
    // OrganizationName organizationName = OrganizationName.of(/*organizationId=*/"123234324");
    ListAssetsRequest.Builder request =
        ListAssetsRequest.newBuilder().setParent(organizationName.toString());

    // Call the API.
    ListAssetsPagedResponse response = client.listAssets(request.build());

    // This creates one list for all assets.  If your organization has a large number of assets
    // this can cause out of memory issues.  You can process them incrementally by returning
    // the Iterable returned response.iterateAll() directly.
    ImmutableList<ListAssetsResult> results = ImmutableList.copyOf(response.iterateAll());
    System.out.println("All assets:");
    System.out.println(results);
    return results;
  } catch (IOException e) {
    throw new RuntimeException("Couldn't create client.", e);
  }
}

Go

import (
	"context"
	"fmt"
	"io"

	securitycenter "cloud.google.com/go/securitycenter/apiv1"
	"google.golang.org/api/iterator"
	securitycenterpb "google.golang.org/genproto/googleapis/cloud/securitycenter/v1"
)

// listAllAssets prints every asset to w for orgID. orgID is the numeric
// Organization ID.
func listAllAssets(w io.Writer, orgID string) error {
	// orgID := "12321311"
	// Instantiate a context and a security service client to make API calls.
	ctx := context.Background()
	client, err := securitycenter.NewClient(ctx)
	if err != nil {
		return fmt.Errorf("securitycenter.NewClient: %v", err)
	}
	defer client.Close() // Closing the client safely cleans up background resources.

	req := &securitycenterpb.ListAssetsRequest{
		Parent: fmt.Sprintf("organizations/%s", orgID),
	}

	assetsFound := 0
	it := client.ListAssets(ctx, req)
	for {
		result, err := it.Next()
		if err == iterator.Done {
			break
		}
		if err != nil {
			return fmt.Errorf("ListAssets: %v", err)
		}
		asset := result.Asset
		properties := asset.SecurityCenterProperties
		fmt.Fprintf(w, "Asset Name: %s,", asset.Name)
		fmt.Fprintf(w, "Resource Name %s,", properties.ResourceName)
		fmt.Fprintf(w, "Resource Type %s\n", properties.ResourceType)
		assetsFound++
	}
	return nil
}

Node.js

// Imports the Google Cloud client library.
const {SecurityCenterClient} = require('@google-cloud/security-center');

// Creates a new client.
const client = new SecurityCenterClient();
//  organizationId is the numeric ID of the organization.
/*
 * TODO(developer): Uncomment the following lines
 */
// const organizationId = "111122222444";
const orgName = client.organizationPath(organizationId);
// Call the API with automatic pagination.
async function listAssets() {
  const [response] = await client.listAssets({parent: orgName});
  let count = 0;
  Array.from(response).forEach(result =>
    console.log(
      `${++count} ${result.asset.name} ${
        result.asset.securityCenterProperties.resourceName
      }`
    )
  );
}

listAssets();

Filtering Assets

An organization might have a lot of Assets. The example above doesn't use any filters, so all assets are returned. Security Command Center enables you to use asset filters to get information about specific assets. Filters are like "where" clauses in SQL statements, except instead of columns, they apply to the objects returned by the API.

The example below uses a filter to return only project resources in the organization:

gcloud

  # ORGANIZATION_ID=12344321
  FILTER="security_center_properties.resource_type=\"google.cloud.resourcemanager.Project\""

  gcloud alpha scc assets list $ORGANIZATION_ID --filter="$FILTER"

For more examples, run:

  gcloud alpha scc assets list --help

Python

from google.cloud import securitycenter

client = securitycenter.SecurityCenterClient()

# organization_id is the numeric ID of the organization.
# organization_id = "1234567777"
org_name = "organizations/{org_id}".format(org_id=organization_id)

project_filter = (
    "security_center_properties.resource_type="
    + '"google.cloud.resourcemanager.Project"'
)
# Call the API and print results.
asset_iterator = client.list_assets(org_name, filter_=project_filter)
for i, asset_result in enumerate(asset_iterator):
    print(i, asset_result)

Java

static ImmutableList<ListAssetsResult> listAssetsWithFilter(OrganizationName organizationName) {
  try (SecurityCenterClient client = SecurityCenterClient.create()) {
    // Start setting up a request for to search for all assets in an organization.
    // OrganizationName organizationName = OrganizationName.of(/*organizationId=*/"123234324");
    ListAssetsRequest.Builder request =
        ListAssetsRequest.newBuilder()
            .setParent(organizationName.toString())
            .setFilter(
                "security_center_properties.resource_type=\"google.cloud.resourcemanager.Project\"");

    // Call the API.
    ListAssetsPagedResponse response = client.listAssets(request.build());

    // This creates one list for all assets.  If your organization has a large number of assets
    // this can cause out of memory issues.  You can process them incrementally by returning
    // the Iterable returned response.iterateAll() directly.
    ImmutableList<ListAssetsResult> results = ImmutableList.copyOf(response.iterateAll());
    System.out.println("Project assets:");
    System.out.println(results);
    return results;
  } catch (IOException e) {
    throw new RuntimeException("Couldn't create client.", e);
  }
}

Go

import (
	"context"
	"fmt"
	"io"

	securitycenter "cloud.google.com/go/securitycenter/apiv1"
	"google.golang.org/api/iterator"
	securitycenterpb "google.golang.org/genproto/googleapis/cloud/securitycenter/v1"
)

// listAllProjectAssets lists all current GCP project assets in orgID and
// prints out results to w. orgID is the numeric organization ID of interest.
func listAllProjectAssets(w io.Writer, orgID string) error {
	// orgID := "12321311"
	// Instantiate a context and a security service client to make API calls.
	ctx := context.Background()
	client, err := securitycenter.NewClient(ctx)
	if err != nil {
		return fmt.Errorf("securitycenter.NewClient: %v", err)
	}
	defer client.Close() // Closing the client safely cleans up background resources.
	req := &securitycenterpb.ListAssetsRequest{
		Parent: fmt.Sprintf("organizations/%s", orgID),
		Filter: `security_center_properties.resource_type="google.cloud.resourcemanager.Project"`,
	}

	assetsFound := 0
	it := client.ListAssets(ctx, req)
	for {
		result, err := it.Next()
		if err == iterator.Done {
			break
		}
		if err != nil {
			return fmt.Errorf("ListAssets: %v", err)
		}
		asset := result.Asset
		properties := asset.SecurityCenterProperties
		fmt.Fprintf(w, "Asset Name: %s,", asset.Name)
		fmt.Fprintf(w, "Resource Name %s,", properties.ResourceName)
		fmt.Fprintf(w, "Resource Type %s\n", properties.ResourceType)
		assetsFound++
	}
	return nil
}

Node.js

// Imports the Google Cloud client library.
const {SecurityCenterClient} = require('@google-cloud/security-center');

// Creates a new client.
const client = new SecurityCenterClient();
//  organizationId is the numeric ID of the organization.
/*
 * TODO(developer): Uncomment the following lines
 */
// const organizationId = "1234567777";
const orgName = client.organizationPath(organizationId);

// Call the API with automatic pagination.
async function listFilteredAssets() {
  const [response] = await client.listAssets({
    parent: orgName,
    filter:
      'security_center_properties.resource_type="google.cloud.resourcemanager.Project"',
  });
  let count = 0;
  Array.from(response).forEach(result =>
    console.log(
      `${++count} ${result.asset.name} ${
        result.asset.securityCenterProperties.resourceName
      } ${result.stateChange}`
    )
  );
}

listFilteredAssets();

Listing at a point in time

The previous examples show how to list an organization's current set of assets. Security Command Center also enables you to view a historical snapshot of an organization's assets. The example below returns the state of all resources at a specific point in time. Security Command Center supports millisecond time resolutions.

gcloud

  # ORGANIZATION_ID=12344321
  # READ_TIME follows the format YYYY-MM-DDThh:mm:ss.ffffffZ
  READ_TIME=2019-02-28T07:00:06.861Z

  gcloud alpha scc assets list $ORGANIZATION_ID --read-time=$READ_TIME

For more examples, run:

  gcloud alpha scc assets list --help

Python

from datetime import datetime, timedelta

from google.protobuf.timestamp_pb2 import Timestamp

from google.cloud import securitycenter

client = securitycenter.SecurityCenterClient()

# organization_id is the numeric ID of the organization.
# organization_id = "1234567777"
org_name = "organizations/{org_id}".format(org_id=organization_id)

project_filter = (
    "security_center_properties.resource_type="
    + '"google.cloud.resourcemanager.Project"'
)

# Lists assets as of yesterday.
read_time = datetime.utcnow() - timedelta(days=1)
timestamp_proto = Timestamp()
timestamp_proto.FromDatetime(read_time)

# Call the API and print results.
asset_iterator = client.list_assets(
    org_name, filter_=project_filter, read_time=timestamp_proto
)
for i, asset_result in enumerate(asset_iterator):
    print(i, asset_result)

Java

static ImmutableList<ListAssetsResult> listAssetsAsOfYesterday(
    OrganizationName organizationName, Instant asOf) {
  try (SecurityCenterClient client = SecurityCenterClient.create()) {
    // Start setting up a request for to search for all assets in an organization.
    // OrganizationName organizationName = OrganizationName.of(/*organizationId=*/"123234324");

    // Initialize the builder with the organization and filter
    ListAssetsRequest.Builder request =
        ListAssetsRequest.newBuilder()
            .setParent(organizationName.toString())
            .setFilter(
                "security_center_properties.resource_type=\"google.cloud.resourcemanager.Project\"");

    // Set read time to either the instant passed in or one day ago.
    asOf = MoreObjects.firstNonNull(asOf, Instant.now().minus(Duration.ofDays(1)));
    request.getReadTimeBuilder().setSeconds(asOf.getEpochSecond()).setNanos(asOf.getNano());

    // Call the API.
    ListAssetsPagedResponse response = client.listAssets(request.build());

    // This creates one list for all assets.  If your organization has a large number of assets
    // this can cause out of memory issues.  You can process them incrementally by returning
    // the Iterable returned response.iterateAll() directly.
    ImmutableList<ListAssetsResult> results = ImmutableList.copyOf(response.iterateAll());
    System.out.println("Projects:");
    System.out.println(results);
    return results;
  } catch (IOException e) {
    throw new RuntimeException("Couldn't create client.", e);
  }
}

Go

import (
	"context"
	"fmt"
	"io"
	"time"

	securitycenter "cloud.google.com/go/securitycenter/apiv1"
	"github.com/golang/protobuf/ptypes"
	"google.golang.org/api/iterator"
	securitycenterpb "google.golang.org/genproto/googleapis/cloud/securitycenter/v1"
)

// listAllProjectAssets lists all GCP Projects in orgID at asOf time and prints
// out results to w. orgID is the numeric organization ID of interest.
func listAllProjectAssetsAtTime(w io.Writer, orgID string, asOf time.Time) error {
	// orgID := "12321311"
	// Instantiate a context and a security service client to make API calls.
	ctx := context.Background()
	client, err := securitycenter.NewClient(ctx)
	if err != nil {
		return fmt.Errorf("securitycenter.NewClient: %v", err)
	}
	defer client.Close() // Closing the client safely cleans up background resources.

	// Convert the time to a Timestamp protobuf
	readTime, err := ptypes.TimestampProto(asOf)
	if err != nil {
		return fmt.Errorf("TimestampProto(%v): %v", asOf, err)
	}

	req := &securitycenterpb.ListAssetsRequest{
		Parent:   fmt.Sprintf("organizations/%s", orgID),
		Filter:   `security_center_properties.resource_type="google.cloud.resourcemanager.Project"`,
		ReadTime: readTime,
	}

	assetsFound := 0
	it := client.ListAssets(ctx, req)
	for {
		result, err := it.Next()
		if err == iterator.Done {
			break
		}
		if err != nil {
			return fmt.Errorf("ListAssets: %v", err)
		}
		asset := result.Asset
		properties := asset.SecurityCenterProperties
		fmt.Fprintf(w, "Asset Name: %s,", asset.Name)
		fmt.Fprintf(w, "Resource Name %s,", properties.ResourceName)
		fmt.Fprintf(w, "Resource Type %s\n", properties.ResourceType)
		assetsFound++
	}
	return nil
}

Node.js

// Imports the Google Cloud client library.
const {SecurityCenterClient} = require('@google-cloud/security-center');

// Creates a new client.
const client = new SecurityCenterClient();
//  organizationId is the numeric ID of the organization.
/*
 * TODO(developer): Uncomment the following lines
 */
// const organizationId = "1234567777";
const orgName = client.organizationPath(organizationId);

const oneDayAgo = new Date();
oneDayAgo.setDate(oneDayAgo.getDate() - 1);

// Call the API with automatic pagination.
async function listAssetsAtTime() {
  const [response] = await client.listAssets({
    parent: orgName,
    filter:
      'security_center_properties.resource_type="google.cloud.resourcemanager.Project"',
    // readTime must be in the form of a google.protobuf.Timestamp object
    // which takes seconds and nanoseconds.
    readTime: {
      seconds: Math.floor(oneDayAgo.getTime() / 1000),
      nanos: (oneDayAgo.getTime() % 1000) * 1e6,
    },
  });
  let count = 0;
  Array.from(response).forEach(result =>
    console.log(
      `${++count} ${result.asset.name} ${
        result.asset.securityCenterProperties.resourceName
      }`
    )
  );
}

listAssetsAtTime();

List assets with state changes

Security Command Center enables you to compare an asset to a previous period in time to identify if it was created, deleted, or present during the specified time period. This is captured in the state_change field on the list asset results.

gcloud

  # ORGANIZATION_ID=12344321
  # READ_TIME follows the format YYYY-MM-DDThh:mm:ss.ffffffZ
  READ_TIME=2019-02-28T07:00:06.861Z
  FILTER="security_center_properties.resource_type=\"google.cloud.resourcemanager.Project\""
  COMPARE_DURATION=86400s

  gcloud alpha scc assets list $ORGANIZATION_ID --read-time=$READ_TIME \
      --filter=$FILTER \
      --compare-duration=$COMPARE_DURATION

For more examples, run:

  gcloud alpha scc assets list --help

Python

from datetime import timedelta

from google.protobuf.duration_pb2 import Duration
from google.cloud import securitycenter

client = securitycenter.SecurityCenterClient()

# organization_id is the numeric ID of the organization.
# organization_id = "1234567777"
org_name = "organizations/{org_id}".format(org_id=organization_id)
project_filter = (
    "security_center_properties.resource_type="
    + '"google.cloud.resourcemanager.Project"'
)

# List assets and their state change the last 30 days
compare_delta = timedelta(days=30)
# Convert the timedelta to a Duration
duration_proto = Duration()
duration_proto.FromTimedelta(compare_delta)
# Call the API and print results.
asset_iterator = client.list_assets(
    org_name, filter_=project_filter, compare_duration=duration_proto
)
for i, asset in enumerate(asset_iterator):
    print(i, asset)

Java

static ImmutableList<ListAssetsResult> listAssetAndStatusChanges(
    OrganizationName organizationName, Duration timeSpan, Instant asOf) {
  try (SecurityCenterClient client = SecurityCenterClient.create()) {

    // Start setting up a request for to search for all assets in an organization.
    // OrganizationName organizationName = OrganizationName.of(/*organizationId=*/"123234324");
    ListAssetsRequest.Builder request =
        ListAssetsRequest.newBuilder()
            .setParent(organizationName.toString())
            .setFilter(
                "security_center_properties.resource_type=\"google.cloud.resourcemanager.Project\"");
    request
        .getCompareDurationBuilder()
        .setSeconds(timeSpan.getSeconds())
        .setNanos(timeSpan.getNano());

    // Set read time to either the instant passed in or now.
    asOf = MoreObjects.firstNonNull(asOf, Instant.now());
    request.getReadTimeBuilder().setSeconds(asOf.getEpochSecond()).setNanos(asOf.getNano());

    // Call the API.
    ListAssetsPagedResponse response = client.listAssets(request.build());

    // This creates one list for all assets.  If your organization has a large number of assets
    // this can cause out of memory issues.  You can process them incrementally by returning
    // the Iterable returned response.iterateAll() directly.
    ImmutableList<ListAssetsResult> results = ImmutableList.copyOf(response.iterateAll());
    System.out.println("Projects:");
    System.out.println(results);
    return results;
  } catch (IOException e) {
    throw new RuntimeException("Couldn't create client.", e);
  }
}

Go

import (
	"context"
	"fmt"
	"io"
	"time"

	securitycenter "cloud.google.com/go/securitycenter/apiv1"
	"github.com/golang/protobuf/ptypes"
	"google.golang.org/api/iterator"
	securitycenterpb "google.golang.org/genproto/googleapis/cloud/securitycenter/v1"
)

// listAllProjectAssetsAndStateChange lists all current GCP project assets in
// orgID and prints the projects and there change from a day ago out to w.
// orgID is the numeric // organization ID of interest.
func listAllProjectAssetsAndStateChanges(w io.Writer, orgID string) error {
	// orgID := "12321311"
	// Instantiate a context and a security service client to make API calls.
	ctx := context.Background()
	client, err := securitycenter.NewClient(ctx)
	if err != nil {
		return fmt.Errorf("securitycenter.NewClient: %v", err)
	}
	defer client.Close() // Closing the client safely cleans up background resources.

	req := &securitycenterpb.ListAssetsRequest{
		Parent:          fmt.Sprintf("organizations/%s", orgID),
		Filter:          `security_center_properties.resource_type="google.cloud.resourcemanager.Project"`,
		CompareDuration: ptypes.DurationProto(24 * time.Hour),
	}

	assetsFound := 0
	it := client.ListAssets(ctx, req)
	for {
		result, err := it.Next()
		if err == iterator.Done {
			break
		}
		if err != nil {
			return fmt.Errorf("ListAssets: %v", err)
		}
		asset := result.Asset
		properties := asset.SecurityCenterProperties
		fmt.Fprintf(w, "Asset Name: %s,", asset.Name)
		fmt.Fprintf(w, "Resource Name %s,", properties.ResourceName)
		fmt.Fprintf(w, "Resource Type %s", properties.ResourceType)
		fmt.Fprintf(w, "State Change %s\n", result.StateChange)
		assetsFound++
	}
	return nil
}

Node.js

// Imports the Google Cloud client library.
const {SecurityCenterClient} = require('@google-cloud/security-center');

// Creates a new client.
const client = new SecurityCenterClient();
//  organizationId is the numeric ID of the organization.
/*
 * TODO(developer): Uncomment the following lines
 */
// const organizationId = "1234567777";
const orgName = client.organizationPath(organizationId);
// Call the API with automatic pagination.
async function listAssetsAndChanges() {
  const [response] = await client.listAssets({
    parent: orgName,
    compareDuration: {seconds: 30 * /*Second in Day=*/ 86400, nanos: 0},
    filter:
      'security_center_properties.resource_type="google.cloud.resourcemanager.Project"',
  });
  let count = 0;
  Array.from(response).forEach(result =>
    console.log(
      `${++count} ${result.asset.name} ${
        result.asset.securityCenterProperties.resourceName
      } ${result.stateChange}`
    )
  );
}

listAssetsAndChanges();

Filter examples

Following are some other useful asset filters.

Finding Project Assets created at or before a specific time

These example filters match assets created at or before July 18th, 2019 at 8:26:21PM GMT. With the create_time filter, you can express time using the following formats and types:

  • Unix time (in milliseconds) as an integer literal

    "create_time <= 1563481581000"
    
  • RFC 3339 as a string literal

    "create_time <= \"2019-07-18T20:26:21+00:00\""
    

Find a Project Asset with a specific owner

"security_center_properties.resource_type = \"google.cloud.resourcemanager.Project\" AND security_center_properties.resource_owners : \"$USER\""

$USER is typically in the format user:someone@domain.com. The comparison for user uses the substring operator : and an exact match isn't necessary.

Firewall rules that have open HTTP Ports

"security_center_properties.resource_type = \"google.compute.Firewall\" AND resource_properties.name =\"default-allow-http\""

Resources that belong to specific projects

"security_center_properties.resource_parent = \"$PROJECT_1_NAME\" OR security_center_properties.resource_parent = \"$PROJECT_2_NAME\""

$PROJECT_1_NAME and $PROJECT_2_NAME are resource identifiers in the form of //cloudresourcemanager.googleapis.com/projects/$PROJECT_ID, where $PROJECT_ID is the project number. A complete example would be something like: //cloudresourcemanager.googleapis.com/projects/100090906

Finding Compute Engine images whose names contain a specific string

This filter returns Compute Engine images that contain substring "Debia":

"security_center_properties.resource_type = \"google.compute.Image\" AND resource_properties.name : \"Debia\""
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