io.questdb.cutlass.pgwire.DefaultPgWireAuthenticatorFactory Maven / Gradle / Ivy

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 *  Copyright (c) 2019-2023 QuestDB
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package io.questdb.cutlass.pgwire;

import io.questdb.ServerMain;
import io.questdb.cairo.sql.NetworkSqlExecutionCircuitBreaker;
import io.questdb.cutlass.auth.Authenticator;
import io.questdb.std.str.DirectUtf8Sink;

public final class DefaultPgWireAuthenticatorFactory implements PgWireAuthenticatorFactory {
    public static final PgWireAuthenticatorFactory INSTANCE = new DefaultPgWireAuthenticatorFactory();

    @Override
    public Authenticator getPgWireAuthenticator(
            PGWireConfiguration configuration,
            NetworkSqlExecutionCircuitBreaker circuitBreaker,
            CircuitBreakerRegistry registry,
            OptionsListener optionsListener
    ) {
        // Normally, all authenticators instances share native buffers for static passwords as the buffers are allocated
        // and owned by FactoryProviders.
        // But the Default implementation does not use FactoryProviders at all. There is a single static field INSTANCE, see above.
        // Thus, there is nothing what could own and close the buffers. So we allocate buffers for each authenticator
        // and the authenticator will be responsible for closing them.
        DirectUtf8Sink defaultUserPasswordSink = new DirectUtf8Sink(4);
        DirectUtf8Sink readOnlyUserPasswordSink = new DirectUtf8Sink(4);
        UsernamePasswordMatcher matcher = new CustomCloseActionPasswordMatcherDelegate(
                ServerMain.newPgWireUsernamePasswordMatcher(configuration, defaultUserPasswordSink, readOnlyUserPasswordSink),
                () -> {
                    defaultUserPasswordSink.close();
                    readOnlyUserPasswordSink.close();
                }
        );

        return new CleartextPasswordPgWireAuthenticator(
                configuration,
                circuitBreaker,
                registry,
                optionsListener,
                matcher,
                true
        );
    }
}