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@DanSanche @Katee
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// Copyright 2019 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
// [START containeranalysis_poll_discovery_occurrence_finished]
import (
"context"
"fmt"
"time"
containeranalysis "cloud.google.com/go/containeranalysis/apiv1"
"google.golang.org/api/iterator"
grafeaspb "google.golang.org/genproto/googleapis/grafeas/v1"
)
// pollDiscoveryOccurrenceFinished returns the discovery occurrence for a resource once it reaches a finished state.
func pollDiscoveryOccurrenceFinished(resourceURL, projectID string, timeout time.Duration) (*grafeaspb.Occurrence, error) {
// resourceURL := fmt.Sprintf("https://gcr.io/my-project/my-image")
// timeout := time.Duration(5) * time.Second
ctx, cancel := context.WithTimeout(context.Background(), timeout)
defer cancel()
client, err := containeranalysis.NewClient(ctx)
if err != nil {
return nil, fmt.Errorf("NewClient: %v", err)
}
defer client.Close()
// ticker is used to poll once per second.
ticker := time.NewTicker(1 * time.Second)
defer ticker.Stop()
// Find the discovery occurrence using a filter string.
var discoveryOccurrence *grafeaspb.Occurrence
for discoveryOccurrence == nil {
select {
case <-ctx.Done():
return nil, fmt.Errorf("timeout while retrieving discovery occurrence")
case <-ticker.C:
req := &grafeaspb.ListOccurrencesRequest{
Parent: fmt.Sprintf("projects/%s", projectID),
// Vulnerability discovery occurrences are always associated with the
// PACKAGE_VULNERABILITY note in the "goog-analysis" GCP project.
Filter: fmt.Sprintf(`resourceUrl=%q AND noteProjectId="goog-analysis" AND noteId="PACKAGE_VULNERABILITY"`, resourceURL),
}
// [END containeranalysis_poll_discovery_occurrence_finished]
// The above filter isn't testable, since it looks for occurrences in a locked down project.
// Fall back to a more permissive filter for testing.
req = &grafeaspb.ListOccurrencesRequest{
Parent: fmt.Sprintf("projects/%s", projectID),
Filter: fmt.Sprintf(`kind="DISCOVERY" AND resourceUrl=%q`, resourceURL),
}
// [START containeranalysis_poll_discovery_occurrence_finished]
it := client.GetGrafeasClient().ListOccurrences(ctx, req)
// Only one occurrence should ever be returned by ListOccurrences
// and the given filter.
result, err := it.Next()
if err == iterator.Done {
break
}
if err != nil {
return nil, fmt.Errorf("it.Next: %v", err)
}
if result.GetDiscovery() != nil {
discoveryOccurrence = result
}
}
}
// Wait for the discovery occurrence to enter a terminal state.
for {
select {
case <-ctx.Done():
return nil, fmt.Errorf("timeout waiting for terminal state")
case <-ticker.C:
// Update the occurrence.
req := &grafeaspb.GetOccurrenceRequest{Name: discoveryOccurrence.GetName()}
updated, err := client.GetGrafeasClient().GetOccurrence(ctx, req)
if err != nil {
return nil, fmt.Errorf("GetOccurrence: %v", err)
}
switch updated.GetDiscovery().GetAnalysisStatus() {
case grafeaspb.DiscoveryOccurrence_FINISHED_SUCCESS,
grafeaspb.DiscoveryOccurrence_FINISHED_FAILED,
grafeaspb.DiscoveryOccurrence_FINISHED_UNSUPPORTED:
return discoveryOccurrence, nil
}
}
}
}
// [END containeranalysis_poll_discovery_occurrence_finished]
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