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[bramble] Factor out database type placeholder replacement

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to make it available in database schema migrations
This commit is contained in:
Torsten Grote
2018-10-26 07:47:22 -03:00
parent 8fc622f85d
commit 969150bff0
5 changed files with 67 additions and 41 deletions
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34
bramble-core/src/main/java/org/briarproject/bramble/db/DatabaseTypes.java Normal file
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@@ -0,0 +1,34 @@
package org.briarproject.bramble.db;
class DatabaseTypes {
private final String hashType, secretType, binaryType;
private final String counterType, stringType;
public DatabaseTypes(String hashType, String secretType, String binaryType,
String counterType, String stringType) {
this.hashType = hashType;
this.secretType = secretType;
this.binaryType = binaryType;
this.counterType = counterType;
this.stringType = stringType;
}
/**
* Replaces database type placeholders in a statement with the actual types.
* These placeholders are currently supported:
* <li> _HASH
* <li> _SECRET
* <li> _BINARY
* <li> _COUNTER
* <li> _STRING
*/
String replaceTypes(String s) {
s = s.replaceAll("_HASH", hashType);
s = s.replaceAll("_SECRET", secretType);
s = s.replaceAll("_BINARY", binaryType);
s = s.replaceAll("_COUNTER", counterType);
s = s.replaceAll("_STRING", stringType);
return s;
}
}

5
bramble-core/src/main/java/org/briarproject/bramble/db/H2Database.java
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@@ -30,6 +30,8 @@ class H2Database extends JdbcDatabase {
private static final String BINARY_TYPE = "BINARY";
private static final String COUNTER_TYPE = "INT NOT NULL AUTO_INCREMENT";
private static final String STRING_TYPE = "VARCHAR";
private static final DatabaseTypes dbTypes = new DatabaseTypes(HASH_TYPE,
SECRET_TYPE, BINARY_TYPE, COUNTER_TYPE, STRING_TYPE);
private final DatabaseConfig config;
private final String url;
@@ -40,8 +42,7 @@ class H2Database extends JdbcDatabase {
@Inject
H2Database(DatabaseConfig config, MessageFactory messageFactory,
Clock clock) {
super(HASH_TYPE, SECRET_TYPE, BINARY_TYPE, COUNTER_TYPE, STRING_TYPE,
messageFactory, clock);
super(dbTypes, messageFactory, clock);
this.config = config;
File dir = config.getDatabaseDirectory();
String path = new File(dir, "db").getAbsolutePath();

7
bramble-core/src/main/java/org/briarproject/bramble/db/HyperSqlDatabase.java
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@@ -30,6 +30,8 @@ class HyperSqlDatabase extends JdbcDatabase {
private static final String COUNTER_TYPE =
"INTEGER NOT NULL GENERATED ALWAYS AS IDENTITY(START WITH 1)";
private static final String STRING_TYPE = "VARCHAR";
private static final DatabaseTypes dbTypes = new DatabaseTypes(HASH_TYPE,
SECRET_TYPE, BINARY_TYPE, COUNTER_TYPE, STRING_TYPE);
private final DatabaseConfig config;
private final String url;
@@ -40,8 +42,7 @@ class HyperSqlDatabase extends JdbcDatabase {
@Inject
HyperSqlDatabase(DatabaseConfig config, MessageFactory messageFactory,
Clock clock) {
super(HASH_TYPE, SECRET_TYPE, BINARY_TYPE, COUNTER_TYPE, STRING_TYPE,
messageFactory, clock);
super(dbTypes, messageFactory, clock);
this.config = config;
File dir = config.getDatabaseDirectory();
String path = new File(dir, "db").getAbsolutePath();
@@ -78,7 +79,7 @@ class HyperSqlDatabase extends JdbcDatabase {
}
@Override
public long getFreeSpace() throws DbException {
public long getFreeSpace() {
File dir = config.getDatabaseDirectory();
long maxSize = config.getMaxSize();
long free = dir.getFreeSpace();

53
bramble-core/src/main/java/org/briarproject/bramble/db/JdbcDatabase.java
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@@ -312,10 +312,9 @@ abstract class JdbcDatabase implements Database<Connection> {
Logger.getLogger(JdbcDatabase.class.getName());
// Different database libraries use different names for certain types
private final String hashType, secretType, binaryType;
private final String counterType, stringType;
private final MessageFactory messageFactory;
private final Clock clock;
private final DatabaseTypes dbTypes;
// Locking: connectionsLock
private final LinkedList<Connection> connections = new LinkedList<>();
@@ -330,14 +329,9 @@ abstract class JdbcDatabase implements Database<Connection> {
private final Lock connectionsLock = new ReentrantLock();
private final Condition connectionsChanged = connectionsLock.newCondition();
JdbcDatabase(String hashType, String secretType, String binaryType,
String counterType, String stringType,
MessageFactory messageFactory, Clock clock) {
this.hashType = hashType;
this.secretType = secretType;
this.binaryType = binaryType;
this.counterType = counterType;
this.stringType = stringType;
JdbcDatabase(DatabaseTypes databaseTypes, MessageFactory messageFactory,
Clock clock) {
this.dbTypes = databaseTypes;
this.messageFactory = messageFactory;
this.clock = clock;
}
@@ -432,7 +426,7 @@ abstract class JdbcDatabase implements Database<Connection> {
return Arrays.asList(
new Migration38_39(),
new Migration39_40(),
new Migration40_41()
new Migration40_41(dbTypes)
);
}
@@ -492,20 +486,20 @@ abstract class JdbcDatabase implements Database<Connection> {
Statement s = null;
try {
s = txn.createStatement();
s.executeUpdate(insertTypeNames(CREATE_SETTINGS));
s.executeUpdate(insertTypeNames(CREATE_LOCAL_AUTHORS));
s.executeUpdate(insertTypeNames(CREATE_CONTACTS));
s.executeUpdate(insertTypeNames(CREATE_GROUPS));
s.executeUpdate(insertTypeNames(CREATE_GROUP_METADATA));
s.executeUpdate(insertTypeNames(CREATE_GROUP_VISIBILITIES));
s.executeUpdate(insertTypeNames(CREATE_MESSAGES));
s.executeUpdate(insertTypeNames(CREATE_MESSAGE_METADATA));
s.executeUpdate(insertTypeNames(CREATE_MESSAGE_DEPENDENCIES));
s.executeUpdate(insertTypeNames(CREATE_OFFERS));
s.executeUpdate(insertTypeNames(CREATE_STATUSES));
s.executeUpdate(insertTypeNames(CREATE_TRANSPORTS));
s.executeUpdate(insertTypeNames(CREATE_OUTGOING_KEYS));
s.executeUpdate(insertTypeNames(CREATE_INCOMING_KEYS));
s.executeUpdate(dbTypes.replaceTypes(CREATE_SETTINGS));
s.executeUpdate(dbTypes.replaceTypes(CREATE_LOCAL_AUTHORS));
s.executeUpdate(dbTypes.replaceTypes(CREATE_CONTACTS));
s.executeUpdate(dbTypes.replaceTypes(CREATE_GROUPS));
s.executeUpdate(dbTypes.replaceTypes(CREATE_GROUP_METADATA));
s.executeUpdate(dbTypes.replaceTypes(CREATE_GROUP_VISIBILITIES));
s.executeUpdate(dbTypes.replaceTypes(CREATE_MESSAGES));
s.executeUpdate(dbTypes.replaceTypes(CREATE_MESSAGE_METADATA));
s.executeUpdate(dbTypes.replaceTypes(CREATE_MESSAGE_DEPENDENCIES));
s.executeUpdate(dbTypes.replaceTypes(CREATE_OFFERS));
s.executeUpdate(dbTypes.replaceTypes(CREATE_STATUSES));
s.executeUpdate(dbTypes.replaceTypes(CREATE_TRANSPORTS));
s.executeUpdate(dbTypes.replaceTypes(CREATE_OUTGOING_KEYS));
s.executeUpdate(dbTypes.replaceTypes(CREATE_INCOMING_KEYS));
s.close();
} catch (SQLException e) {
tryToClose(s);
@@ -530,15 +524,6 @@ abstract class JdbcDatabase implements Database<Connection> {
}
}
private String insertTypeNames(String s) {
s = s.replaceAll("_HASH", hashType);
s = s.replaceAll("_SECRET", secretType);
s = s.replaceAll("_BINARY", binaryType);
s = s.replaceAll("_COUNTER", counterType);
s = s.replaceAll("_STRING", stringType);
return s;
}
@Override
public Connection startTransaction() throws DbException {
Connection txn;

9
bramble-core/src/main/java/org/briarproject/bramble/db/Migration40_41.java
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@@ -17,6 +17,12 @@ class Migration40_41 implements Migration<Connection> {
private static final Logger LOG = getLogger(Migration40_41.class.getName());
private final DatabaseTypes dbTypes;
public Migration40_41(DatabaseTypes databaseTypes) {
this.dbTypes = databaseTypes;
}
@Override
public int getStartVersion() {
return 40;
@@ -33,8 +39,7 @@ class Migration40_41 implements Migration<Connection> {
try {
s = txn.createStatement();
s.execute("ALTER TABLE contacts"
// TODO how to insertTypeNames _STRING ?
+ " ADD alias VARCHAR");
+ dbTypes.replaceTypes(" ADD alias VARCHAR"));
} catch (SQLException e) {
tryToClose(s);
throw new DbException(e);