Prepare billing pipeline for production

This makes a few cosmetic changes that prepares the pipeline for production.

Namely:
- Converts file names to include the input yearMonth, mostly mirroring the original invoicing pipeline.
- Factors out the yearMonth logic from the reporting module to the more common backend module. We will likely use the default yearMonth logic in other backend tasks (such as spec11 reporting).
- Adds the "withTemplateCompatability" flag to the Bigquery read, which allows multiple uses of the same template.
- Adds the 'billing' task queue, which retries up to 5 times every 3 minutes, which is about the rate we desire for checking if the pipeline is complete.
- Adds a shell 'invoicing upload' class, which tests the retry semantics we want for post-generation work (e-mailing the invoice to crr-tech, and publishing detail reports)

While this cl may look big, it's mostly just a refactor and setting up boilerplate needed to frame the upload logic.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=179849586

java/google/registry/billing/GenerateInvoicesAction.java

@@ -22,6 +22,9 @@ import com.google.api.services.dataflow.Dataflow;
 import com.google.api.services.dataflow.model.LaunchTemplateParameters;
 import com.google.api.services.dataflow.model.LaunchTemplateResponse;
 import com.google.api.services.dataflow.model.RuntimeEnvironment;
+import com.google.appengine.api.taskqueue.QueueFactory;
+import com.google.appengine.api.taskqueue.TaskOptions;
+import com.google.common.collect.ImmutableMap;
 import com.google.common.net.MediaType;
 import google.registry.config.RegistryConfig.Config;
 import google.registry.request.Action;
@@ -30,9 +33,12 @@ import google.registry.request.auth.Auth;
 import google.registry.util.FormattingLogger;
 import java.io.IOException;
 import javax.inject.Inject;
+import org.joda.time.Duration;
+import org.joda.time.YearMonth;
 
 /**
- * Invokes the {@code InvoicingPipeline} beam template via the REST api.
+ * Invokes the {@code InvoicingPipeline} beam template via the REST api, and enqueues the {@link
+ * PublishInvoicesAction} to publish the subsequent output.
  *
  * <p>This action runs the {@link google.registry.beam.InvoicingPipeline} beam template, staged at
  * gs://<projectId>-beam/templates/invoicing. The pipeline then generates invoices for the month and
@@ -43,25 +49,35 @@ public class GenerateInvoicesAction implements Runnable {
 
   private static final FormattingLogger logger = FormattingLogger.getLoggerForCallerClass();
 
-  @Inject @Config("projectId") String projectId;
-  @Inject @Config("apacheBeamBucketUrl") String beamBucketUrl;
+  @Inject
+  @Config("projectId")
+  String projectId;
+
+  @Inject
+  @Config("apacheBeamBucketUrl")
+  String beamBucketUrl;
+
+  @Inject YearMonth yearMonth;
   @Inject Dataflow dataflow;
   @Inject Response response;
-  @Inject GenerateInvoicesAction() {}
+
+  @Inject
+  GenerateInvoicesAction() {}
 
   static final String PATH = "/_dr/task/generateInvoices";
 
   @Override
   public void run() {
-    logger.info("Launching dataflow job");
+    logger.infofmt("Launching invoicing pipeline for %s", yearMonth);
     try {
       LaunchTemplateParameters params =
           new LaunchTemplateParameters()
-              .setJobName("test-invoicing")
+              .setJobName(String.format("invoicing-%s", yearMonth))
               .setEnvironment(
                   new RuntimeEnvironment()
                       .setZone("us-east1-c")
-                      .setTempLocation(beamBucketUrl + "/temp"));
+                      .setTempLocation(beamBucketUrl + "/temporary"))
+              .setParameters(ImmutableMap.of("yearMonth", yearMonth.toString("yyyy-MM")));
       LaunchTemplateResponse launchResponse =
           dataflow
               .projects()
@@ -70,6 +86,14 @@ public class GenerateInvoicesAction implements Runnable {
               .setGcsPath(beamBucketUrl + "/templates/invoicing")
               .execute();
       logger.infofmt("Got response: %s", launchResponse.getJob().toPrettyString());
+      String jobId = launchResponse.getJob().getId();
+      TaskOptions uploadTask =
+          TaskOptions.Builder.withUrl(PublishInvoicesAction.PATH)
+              .method(TaskOptions.Method.POST)
+              // Dataflow jobs tend to take about 10 minutes to complete.
+              .countdownMillis(Duration.standardMinutes(10).getMillis())
+              .param(BillingModule.PARAM_JOB_ID, jobId);
+      QueueFactory.getQueue(BillingModule.BILLING_QUEUE).add(uploadTask);
     } catch (IOException e) {
       logger.warningfmt("Template Launch failed due to: %s", e.getMessage());
       response.setStatus(SC_INTERNAL_SERVER_ERROR);