Run the Spec11 pipeline daily without sending emails

Add a sendSpec11Email parameter that allows us to only send the email on
one run per month. Next, we will compute the diffs between the daily runs
and send daily emails with those diffs.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=224404653

java/google/registry/reporting/spec11/Spec11RegistrarThreatMatchesParser.java

@@ -0,0 +1,78 @@
+// Copyright 2018 The Nomulus Authors. All Rights Reserved.
+//
+// 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
+//
+//     http://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 google.registry.reporting.spec11;
+
+import static java.nio.charset.StandardCharsets.UTF_8;
+
+import com.google.appengine.tools.cloudstorage.GcsFilename;
+import com.google.common.collect.ImmutableList;
+import com.google.common.io.CharStreams;
+import google.registry.beam.spec11.Spec11Pipeline;
+import google.registry.beam.spec11.ThreatMatch;
+import google.registry.config.RegistryConfig.Config;
+import google.registry.gcs.GcsUtils;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.time.LocalDate;
+import javax.inject.Inject;
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+
+/** Parser to retrieve which registrar-threat matches we should notify via email */
+public class Spec11RegistrarThreatMatchesParser {
+
+  private final LocalDate date;
+  private final GcsUtils gcsUtils;
+  private final String reportingBucket;
+
+  @Inject
+  public Spec11RegistrarThreatMatchesParser(
+      LocalDate date, GcsUtils gcsUtils, @Config("reportingBucket") String reportingBucket) {
+    this.date = date;
+    this.gcsUtils = gcsUtils;
+    this.reportingBucket = reportingBucket;
+  }
+
+  /** Gets the list of registrar:set-of-threat-match pairings from the file in GCS. */
+  public ImmutableList<RegistrarThreatMatches> getRegistrarThreatMatches()
+      throws IOException, JSONException {
+    // TODO(b/120078223): this should only be the diff of this run and the prior run.
+    GcsFilename spec11ReportFilename =
+        new GcsFilename(reportingBucket, Spec11Pipeline.getSpec11ReportFilePath(date));
+    ImmutableList.Builder<RegistrarThreatMatches> builder = ImmutableList.builder();
+    try (InputStream in = gcsUtils.openInputStream(spec11ReportFilename)) {
+      ImmutableList<String> reportLines =
+          ImmutableList.copyOf(CharStreams.toString(new InputStreamReader(in, UTF_8)).split("\n"));
+      // Iterate from 1 to size() to skip the header at line 0.
+      for (int i = 1; i < reportLines.size(); i++) {
+        builder.add(parseRegistrarThreatMatch(reportLines.get(i)));
+      }
+      return builder.build();
+    }
+  }
+
+  private RegistrarThreatMatches parseRegistrarThreatMatch(String line) throws JSONException {
+    JSONObject reportJSON = new JSONObject(line);
+    String registrarEmail = reportJSON.getString(Spec11Pipeline.REGISTRAR_EMAIL_FIELD);
+    JSONArray threatMatchesArray = reportJSON.getJSONArray(Spec11Pipeline.THREAT_MATCHES_FIELD);
+    ImmutableList.Builder<ThreatMatch> threatMatches = ImmutableList.builder();
+    for (int i = 0; i < threatMatchesArray.length(); i++) {
+      threatMatches.add(ThreatMatch.fromJSON(threatMatchesArray.getJSONObject(i)));
+    }
+    return RegistrarThreatMatches.create(registrarEmail, threatMatches.build());
+  }
+}