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Create the pubsub topic if it doesn't exist
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This commit is contained in:
Grant Limberg 2025-09-02 07:49:41 -07:00
parent 195d5b47f0
commit 4ddb1fbe58
1 changed files with 24 additions and 0 deletions
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24
nonfree/controller/PubSubListener.cpp
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@ -9,6 +9,7 @@
#include <google/cloud/pubsub/admin/subscription_admin_client.h>
#include <google/cloud/pubsub/admin/subscription_admin_connection.h>
#include <google/cloud/pubsub/admin/topic_admin_client.h>
#include <google/cloud/pubsub/message.h>
#include <google/cloud/pubsub/subscriber.h>
#include <google/cloud/pubsub/subscription.h>
@ -34,6 +35,29 @@ PubSubListener::PubSubListener(std::string controller_id, std::string project, s
{
GOOGLE_PROTOBUF_VERIFY_VERSION;
// Create Topic if it doesn't exist
// this is only really needed for testing with the emulator
// in production the topic should be created via terraform or gcloud
// before starting the controller
auto topicAdminClient = pubsub_admin::TopicAdminClient(pubsub_admin::MakeTopicAdminConnection());
auto topicName = pubsub::Topic(project, topic).FullName();
auto topicResult = topicAdminClient.GetTopic(topicName);
if (! topicResult.ok()) {
// Only create if not found
if (topicResult.status().code() == google::cloud::StatusCode::kNotFound) {
auto createResult = topicAdminClient.CreateTopic(topicName);
if (! createResult.ok()) {
fprintf(stderr, "Failed to create topic: %s\n", createResult.status().message().c_str());
throw std::runtime_error("Failed to create topic");
}
fprintf(stderr, "Created topic: %s\n", topicName.c_str());
}
else {
fprintf(stderr, "Failed to get topic: %s\n", topicResult.status().message().c_str());
throw std::runtime_error("Failed to get topic");
}
}
google::pubsub::v1::Subscription request;
request.set_name(_subscription.FullName());
request.set_topic(pubsub::Topic(project, topic).FullName());