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JAVA-SPIFFE Core

Core functionality to fetch, process and validate X.509 and JWT SVIDs and Bundles from the Workload API.

It uses the JWT and JOSE Nimbus Library to parse and process the JWT tokens and JSON Web Key (JWK) set bundles.

X.509 Source

A X509Source represents a source of X.509 SVIDs and X.509 bundles maintained via the Workload API.

To create a new X.509 Source:

    X509Source x509Source; 
    try {
        x509Source = DefaultX509Source.newSource();
    } catch (SocketEndpointAddressException | X509SourceException e) {
        // handle exception
    }

    X509Svid svid = x509Source.getX509Svid();
    X509Bundle bundle = x509Source.getBundleForTrustDomain(TrustDomain.of("example.org"));

The newSource() method blocks until the X.509 materials can be retrieved from the Workload API and the X509Source is initialized with the X.509 SVIDs and Bundles. A X.509 context watcher is configured on the X509Source to automatically get the updates from the Workload API. This watcher performs retries if at any time the connection to the Workload API reports an error.

The socket endpoint address is configured through the environment variable SPIFFE_ENDPOINT_SOCKET. Another way to configure it is by providing an X509SourceOptions instance to the newSource method:

    DefaultX509Source.X509SourceOptions x509SourceOptions = DefaultX509Source.X509SourceOptions
            .builder()
            .spiffeSocketPath("unix:/tmp/agent-other.sock")
            .svidPicker(list -> list.get(list.size()-1))
            .build();
    
    X509Source x509Source = DefaultX509Source.newSource(x509SourceOptions);

It allows to configure another SVID picker. By default, the first SVID is used.

Configure a timeout for X509Source initialization

The X509Source newSource() method blocks waiting until an X.509 context is fetched. The X.509 context fetch is retried using an exponential backoff policy with this progression of delays between retries: 1 second, 2 seconds, 4, 8, 16, 32, 60, 60, 60... It retries indefinitely unless a timeout is configured.

This timeout can be configured either providing it through the newSource(Duration timeout) method or using a System property:

spiffe.newX509Source.timeout=PT30S

The timeout duration is expressed in ISO-8601 format.

JWT Source

A JwtSource represents a source of JWT SVIDs and bundles maintained via the Workload API.

To create a new JWT Source:

    JwtSource jwtSource; 
    try {
        jwtSource = JwtSource.newSource();
    } catch (SocketEndpointAddressException | JwtSourceException e) {
        // handle exception
    }

    JwtSvid svid = jwtSource.fetchJwtSvid(SpiffeId.parse("spiffe://example.org/test"), "testaudience1", "audience2");

    JwtBundle bundle = jwtSource.getBundleForTrustDomain(TrustDomain.of("example.org"));

The newSource() method blocks until the JWT materials can be retrieved from the Workload API and the JwtSource is initialized with the JWT Bundles. A JWT context watcher is configured on the JwtSource to automatically get the updates from the Workload API. This watcher performs retries if at any time the connection to the Workload API reports an error.

The socket endpoint address is configured through the environment variable SPIFFE_ENDPOINT_SOCKET.

Another way to configure it is by providing an JwtSourceOptions instance to the newSource method:

    JwtSource.JwtSourceOptions jwtSourceOptions = JwtSource.JwtSourceOptions
            .builder()
            .spiffeSocketPath("unix:/tmp/agent-other.sock")
            .build();
    
    JwtSource jwtSource = JwtSource.newSource(jwtSourceOptions);

Configure a timeout for JwtSource initialization

The JwtSource newSource() method blocks until the JWT materials are fetched. The fetching process is retried using an exponential backoff policy with this progression of delays between retries: 1 second, 2 seconds, 4, 8, 16, 32, 60, 60, 60... It retries indefinitely unless a timeout is configured.