Examples with Resolver org.apache.knox.gateway.util.urltemplate.Resolver used on opensource projects

Example 1 with Resolver

use of org.apache.knox.gateway.util.urltemplate.Resolver in project knox by apache.

the class UrlConnectionDispatch method doGet.

public void doGet(URI url, HttpServletRequest request, HttpServletResponse response) throws IOException, URISyntaxException {
    String sourcePathInfo = request.getPathInfo();
    String sourcePattern = getConfig().getInitParameter("pattern");
    String targetPattern = getConfig().getInitParameter("target");
    // TODO: Some of the compilation should be done at servlet init for performance reasons.
    Template sourceTemplate = Parser.parseTemplate(sourcePattern);
    Template targetTemplate = Parser.parseTemplate(targetPattern);
    Resolver resolver = new DispatchParamResolver(getConfig(), request);
    URI sourceUri = new URI(sourcePathInfo);
    URI targetUri = Rewriter.rewrite(sourceUri, sourceTemplate, targetTemplate, resolver, null);
    // //TODO: This should be more at filter init.
    // Pattern sourceRegex = UrlRewriter.compileUrlRegex( sourcePattern );
    // Matcher matcher = sourceRegex.matcher( sourcePathInfo );
    // String targetUrl = MessageFormat.format( targetPattern, Regex.toGroupArray( matcher ) );
    StringBuilder paramStr = new StringBuilder();
    Enumeration paramNames = request.getParameterNames();
    if (paramNames.hasMoreElements()) {
        paramStr.append('?');
    }
    while (paramNames.hasMoreElements()) {
        String paramName = (String) paramNames.nextElement();
        String paramValue = request.getParameter(paramName);
        paramStr.append(paramName);
        paramStr.append('=');
        paramStr.append(URLEncoder.encode(paramValue, StandardCharsets.UTF_8.name()));
        if (paramNames.hasMoreElements()) {
            paramStr.append('&');
        }
    }
    String urlStr = targetUri.toString() + paramStr.toString();
    try {
        URL clientUrl = new URL(urlStr);
        AuthenticatedURL.Token token = new AuthenticatedURL.Token();
        KerberosAuthenticator authenticator = new KerberosAuthenticator();
        auditor.audit(Action.DISPATCH, urlStr, ResourceType.URI, ActionOutcome.UNAVAILABLE);
        HttpURLConnection conn = new AuthenticatedURL(authenticator).openConnection(clientUrl, token);
        InputStream input = conn.getInputStream();
        if (input != null) {
            try (OutputStream output = response.getOutputStream()) {
                IOUtils.copy(input, output);
            }
        }
        auditor.audit(Action.DISPATCH, urlStr, ResourceType.URI, ActionOutcome.SUCCESS);
    } catch (AuthenticationException e) {
        response.sendError(HttpServletResponse.SC_UNAUTHORIZED);
        LOG.failedToEstablishConnectionToUrl(urlStr, e);
        auditor.audit(Action.DISPATCH, urlStr, ResourceType.URI, ActionOutcome.FAILURE, RES.responseStatus(HttpServletResponse.SC_UNAUTHORIZED));
    } catch (FileNotFoundException e) {
        response.sendError(HttpServletResponse.SC_NOT_FOUND);
        LOG.failedToEstablishConnectionToUrl(urlStr, e);
        auditor.audit(Action.DISPATCH, urlStr, ResourceType.URI, ActionOutcome.FAILURE, RES.responseStatus(HttpServletResponse.SC_NOT_FOUND));
    }
}

Example 2 with Resolver

use of org.apache.knox.gateway.util.urltemplate.Resolver in project knox by apache.

the class HostmapFunctionProcessorTest method testInvalidFunctionNameAndEmptyHostmapUseCase.

@Test
public void testInvalidFunctionNameAndEmptyHostmapUseCase() throws Exception {
    URL configUrl = TestUtils.getResourceUrl(this.getClass(), "empty-hostmap.txt");
    UrlRewriteEnvironment environment = EasyMock.createNiceMock(UrlRewriteEnvironment.class);
    EasyMock.expect(environment.getResource("/WEB-INF/hostmap.txt")).andReturn(configUrl).anyTimes();
    Resolver resolver = EasyMock.createNiceMock(Resolver.class);
    EasyMock.expect(resolver.resolve("host")).andReturn(Collections.singletonList("test-inbound-host")).anyTimes();
    EasyMock.replay(environment, resolver);
    UrlRewriteRulesDescriptor descriptor = UrlRewriteRulesDescriptorFactory.create();
    UrlRewriteRuleDescriptor rule = descriptor.addRule("test-rule");
    rule.pattern("{*}://{host}:{*}/{**}?{**}");
    UrlRewriteActionRewriteDescriptorExt rewrite = rule.addStep("rewrite");
    rewrite.template("{*}://{$invalid-function(host)}:{*}/{**}?{**}");
    UrlRewriteProcessor rewriter = new UrlRewriteProcessor();
    rewriter.initialize(environment, descriptor);
    Template input = Parser.parseLiteral("test-scheme://test-inbound-host:42/test-path/test-file?test-name=test-value");
    Template output = rewriter.rewrite(resolver, input, UrlRewriter.Direction.IN, null);
    assertThat(output, notNullValue());
    assertThat(output.getHost().getFirstValue().getPattern(), is("$invalid-function(host)"));
}

Example 3 with Resolver

use of org.apache.knox.gateway.util.urltemplate.Resolver in project knox by apache.

the class HostmapFunctionProcessorTest method testUnmappedUseCase.

@Test
public void testUnmappedUseCase() throws Exception {
    URL configUrl = TestUtils.getResourceUrl(this.getClass(), "hostmap.txt");
    UrlRewriteEnvironment environment = EasyMock.createNiceMock(UrlRewriteEnvironment.class);
    EasyMock.expect(environment.getResource("/WEB-INF/hostmap.txt")).andReturn(configUrl).anyTimes();
    Resolver resolver = EasyMock.createNiceMock(Resolver.class);
    EasyMock.expect(resolver.resolve("host")).andReturn(Collections.singletonList("test-inbound-unmapped-host")).anyTimes();
    EasyMock.replay(environment, resolver);
    UrlRewriteRulesDescriptor descriptor = UrlRewriteRulesDescriptorFactory.create();
    UrlRewriteRuleDescriptor rule = descriptor.addRule("test-rule");
    rule.pattern("{*}://{host}:{*}/{**}?{**}");
    UrlRewriteActionRewriteDescriptorExt rewrite = rule.addStep("rewrite");
    rewrite.template("{*}://{$hostmap(host)}:{*}/{**}?{**}");
    UrlRewriteProcessor rewriter = new UrlRewriteProcessor();
    rewriter.initialize(environment, descriptor);
    Template input = Parser.parseLiteral("test-scheme://test-inbound-unmapped-host:42/test-path/test-file?test-name-1=test-value-1&test-name-2=test-value-2");
    Template output = rewriter.rewrite(resolver, input, UrlRewriter.Direction.IN, null);
    assertThat(output, notNullValue());
    assertThat(output.getHost().getFirstValue().getPattern(), is("test-inbound-unmapped-host"));
}

Example 4 with Resolver

use of org.apache.knox.gateway.util.urltemplate.Resolver in project knox by apache.

the class HostmapFunctionProcessorTest method testQueryToPathRewriteWithFunction.

@Test
public void testQueryToPathRewriteWithFunction() throws Exception {
    URL configUrl = TestUtils.getResourceUrl(this.getClass(), "hdfs-hostmap.txt");
    UrlRewriteEnvironment environment = EasyMock.createNiceMock(UrlRewriteEnvironment.class);
    EasyMock.expect(environment.getResource("/WEB-INF/hostmap.txt")).andReturn(configUrl).anyTimes();
    Resolver resolver = EasyMock.createNiceMock(Resolver.class);
    EasyMock.expect(resolver.resolve("host")).andReturn(Collections.singletonList("test-internal-host")).anyTimes();
    EasyMock.replay(environment, resolver);
    UrlRewriteRulesDescriptor descriptor = UrlRewriteRulesDescriptorFactory.create();
    UrlRewriteRuleDescriptor rule = descriptor.addRule("test-rule");
    rule.pattern("{*}://{host}:{*}/{**}?{qp1}&{qp2}&{**}");
    UrlRewriteActionRewriteDescriptorExt rewrite = rule.addStep("rewrite");
    rewrite.template("{*}://test-static-host:{*}/{qp1}/{qp2}/{**}?server={$hostmap(host)}&{**}");
    UrlRewriteProcessor rewriter = new UrlRewriteProcessor();
    rewriter.initialize(environment, descriptor);
    Template input = Parser.parseLiteral("test-scheme://test-external-host:42/test-path/test-file?qp1=qp1-val&qp2=qp2-val&test-name-1=test-value-1&test-name-2=test-value-2");
    Template output = rewriter.rewrite(resolver, input, UrlRewriter.Direction.OUT, "test-rule");
    assertThat(output, notNullValue());
    assertThat(output.getHost().getFirstValue().getPattern(), is("test-static-host"));
    assertThat(output.getQuery().get("server").getFirstValue().getPattern(), is("test-external-host"));
    assertThat(output.getQuery().get("server").getValues().size(), is(1));
    assertThat(output.getQuery().get("test-name-1").getFirstValue().getPattern(), is("test-value-1"));
    assertThat(output.getQuery().get("test-name-1").getValues().size(), is(1));
    assertThat(output.getQuery().get("test-name-2").getFirstValue().getPattern(), is("test-value-2"));
    assertThat(output.getQuery().get("test-name-2").getValues().size(), is(1));
    assertThat(output.getQuery().size(), is(3));
}

Example 5 with Resolver

use of org.apache.knox.gateway.util.urltemplate.Resolver in project knox by apache.

the class HostmapFunctionProcessorTest method testEmptyHostmapUseCase.

@Test
public void testEmptyHostmapUseCase() throws Exception {
    URL configUrl = TestUtils.getResourceUrl(this.getClass(), "empty-hostmap.txt");
    UrlRewriteEnvironment environment = EasyMock.createNiceMock(UrlRewriteEnvironment.class);
    EasyMock.expect(environment.getResource("/WEB-INF/hostmap.txt")).andReturn(configUrl).anyTimes();
    Resolver resolver = EasyMock.createNiceMock(Resolver.class);
    EasyMock.expect(resolver.resolve("host")).andReturn(Collections.singletonList("test-inbound-host")).anyTimes();
    EasyMock.replay(environment, resolver);
    UrlRewriteRulesDescriptor descriptor = UrlRewriteRulesDescriptorFactory.create();
    UrlRewriteRuleDescriptor rule = descriptor.addRule("test-rule");
    rule.pattern("{*}://{host}:{*}/{**}?{**}");
    UrlRewriteActionRewriteDescriptorExt rewrite = rule.addStep("rewrite");
    rewrite.template("{*}://{$hostmap(host)}:{*}/{**}?{**}");
    UrlRewriteProcessor rewriter = new UrlRewriteProcessor();
    rewriter.initialize(environment, descriptor);
    Template input = Parser.parseLiteral("test-scheme://test-inbound-host:42/test-path/test-file?test-name=test-value");
    Template output = rewriter.rewrite(resolver, input, UrlRewriter.Direction.IN, null);
    assertThat(output, notNullValue());
    assertThat(output.getHost().getFirstValue().getPattern(), is("test-inbound-host"));
}