Merge changes I39b56689,I7b428b06,I893c0fd0,I772cc9b0

* changes:
  AccountSshKey: Split common getter code to utility method
  AccountSshKey.Id: Add isValid() method
  InitAdminUser: Fix invalid sequence number for SSH key
  Fix migration of SSH keys with invalid sequence numbers (<= 0)

gerrit-pgm/src/main/java/com/google/gerrit/pgm/init/InitAdminUser.java

@@ -164,6 +164,6 @@ public class InitAdminUser implements InitStep {
           "Cannot add public SSH key: %s is not a file", keyFile));
     }
     String content = new String(Files.readAllBytes(p), UTF_8);
-    return new AccountSshKey(new AccountSshKey.Id(id, 0), content);
+    return new AccountSshKey(new AccountSshKey.Id(id, 1), content);
   }
 }

gerrit-reviewdb/src/main/java/com/google/gerrit/reviewdb/client/AccountSshKey.java

@@ -53,6 +53,10 @@ public final class AccountSshKey {
     protected void set(int newValue) {
       seq = newValue;
     }
+
+    public boolean isValid() {
+      return seq > 0;
+    }
   }
 
   @Column(id = 1, name = Column.NONE)
@@ -70,7 +74,7 @@ public final class AccountSshKey {
   public AccountSshKey(final AccountSshKey.Id i, final String pub) {
     id = i;
     sshPublicKey = pub;
-    valid = true; // We can assume it is fine.
+    valid = id.isValid();
   }
 
   public Account.Id getAccount() {
@@ -85,47 +89,31 @@ public final class AccountSshKey {
     return sshPublicKey;
   }
 
-  public String getAlgorithm() {
-    final String s = getSshPublicKey();
-    if (s == null || s.length() == 0) {
-      return "none";
+  private String getPublicKeyPart(int index, String defaultValue) {
+    String s = getSshPublicKey();
+    if (s != null && s.length() > 0) {
+      String[] parts = s.split(" ");
+      if (parts.length > index) {
+        return parts[index];
+      }
+    }
+    return defaultValue;
   }
 
-    final String[] parts = s.split(" ");
-    if (parts.length < 1) {
-      return "none";
-    }
-    return parts[0];
+  public String getAlgorithm() {
+    return getPublicKeyPart(0, "none");
   }
 
   public String getEncodedKey() {
-    final String s = getSshPublicKey();
-    if (s == null || s.length() == 0) {
-      return null;
-    }
-
-    final String[] parts = s.split(" ");
-    if (parts.length < 2) {
-      return null;
-    }
-    return parts[1];
+    return getPublicKeyPart(1, null);
   }
 
   public String getComment() {
-    final String s = getSshPublicKey();
-    if (s == null || s.length() == 0) {
-      return "";
-    }
-
-    final String[] parts = s.split(" ", 3);
-    if (parts.length < 3) {
-      return "";
-    }
-    return parts[2];
+    return getPublicKeyPart(2, "");
   }
 
   public boolean isValid() {
-    return valid;
+    return valid && id.isValid();
   }
 
   public void setInvalid() {

gerrit-reviewdb/src/test/java/com/google/gerrit/reviewdb/client/AccountSshKeyTest.java

@@ -0,0 +1,50 @@
+// Copyright (C) 2016 The Android Open Source Project
+//
+// 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 com.google.gerrit.reviewdb.client;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import org.junit.Test;
+
+public class AccountSshKeyTest {
+  private static final String KEY =
+      "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAgQCgug5VyMXQGnem2H1KVC4/HcRcD4zzBqS"
+      + "uJBRWVonSSoz3RoAZ7bWXCVVGwchtXwUURD689wFYdiPecOrWOUgeeyRq754YWRhU+W28"
+      + "vf8IZixgjCmiBhaL2gt3wff6pP+NXJpTSA4aeWE5DfNK5tZlxlSxqkKOS8JRSUeNQov5T"
+      + "w== john.doe@example.com";
+
+  private final Account.Id accountId = new Account.Id(1);
+
+  @Test
+  public void testValidity() throws Exception {
+    AccountSshKey key = new AccountSshKey(
+        new AccountSshKey.Id(accountId, -1), KEY);
+    assertThat(key.isValid()).isFalse();
+    key = new AccountSshKey(new AccountSshKey.Id(accountId, 0), KEY);
+    assertThat(key.isValid()).isFalse();
+    key = new AccountSshKey(new AccountSshKey.Id(accountId, 1), KEY);
+    assertThat(key.isValid()).isTrue();
+  }
+
+  @Test
+  public void testGetters() throws Exception {
+    AccountSshKey key = new AccountSshKey(
+        new AccountSshKey.Id(accountId, 1), KEY);
+    assertThat(key.getSshPublicKey()).isEqualTo(KEY);
+    assertThat(key.getAlgorithm()).isEqualTo(KEY.split(" ")[0]);
+    assertThat(key.getEncodedKey()).isEqualTo(KEY.split(" ")[1]);
+    assertThat(key.getComment()).isEqualTo(KEY.split(" ")[2]);
+  }
+}

gerrit-server/src/main/java/com/google/gerrit/server/schema/Schema_124.java

@@ -14,8 +14,10 @@
 
 package com.google.gerrit.server.schema;
 
+import com.google.common.base.Function;
 import com.google.common.collect.ArrayListMultimap;
 import com.google.common.collect.Multimap;
+import com.google.common.collect.Ordering;
 import com.google.gerrit.reviewdb.client.Account;
 import com.google.gerrit.reviewdb.client.AccountSshKey;
 import com.google.gerrit.reviewdb.server.ReviewDb;
@@ -42,7 +44,10 @@ import java.io.IOException;
 import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.sql.Statement;
+import java.util.ArrayList;
 import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
 import java.util.Map;
 
 public class Schema_124 extends SchemaVersion {
@@ -106,7 +111,7 @@ public class Schema_124 extends SchemaVersion {
           md.getCommitBuilder().setCommitter(serverUser);
 
           authorizedKeys.load(md);
-          authorizedKeys.setKeys(e.getValue());
+          authorizedKeys.setKeys(fixInvalidSequenceNumbers(e.getValue()));
           authorizedKeys.commit(md);
         }
       }
@@ -116,4 +121,26 @@ public class Schema_124 extends SchemaVersion {
       throw new OrmException(ex);
     }
   }
+
+  private Collection<AccountSshKey> fixInvalidSequenceNumbers(
+      Collection<AccountSshKey> keys) {
+    Ordering<AccountSshKey> o =
+        Ordering.natural().onResultOf(new Function<AccountSshKey, Integer>() {
+          @Override
+          public Integer apply(AccountSshKey sshKey) {
+            return sshKey.getKey().get();
+          }
+        });
+    List<AccountSshKey> fixedKeys = new ArrayList<>(keys);
+    AccountSshKey minKey = o.min(keys);
+    while (minKey.getKey().get() <= 0) {
+      AccountSshKey fixedKey = new AccountSshKey(
+          new AccountSshKey.Id(minKey.getKey().getParentKey(),
+              Math.max(o.max(keys).getKey().get() + 1, 1)),
+          minKey.getSshPublicKey());
+      Collections.replaceAll(fixedKeys, minKey, fixedKey);
+      minKey = o.min(fixedKeys);
+    }
+    return fixedKeys;
+  }
 }