How to use

HttpRuleSampler

in

brave.http

public HttpSampler build() {
 return new HttpRuleSampler(rules);
}

@Test public void customSampler() throws Exception {
 String path = "/foo";
 httpTracing = httpTracing.toBuilder().serverSampler(HttpRuleSampler.newBuilder()
   .addRule(null, path, 0.0f)
   .build()).build();
 init();
 Request request = new Request.Builder().url(url(path)).build();
 try (Response response = client.newCall(request).execute()) {
  assertThat(response.isSuccessful()).isTrue();
 }
 // @After will check that nothing is reported
}

@Test public void customSampler() throws Exception {
 close();
 httpTracing = httpTracing.toBuilder().clientSampler(HttpRuleSampler.newBuilder()
   .addRule(null, "/foo", 0.0f)
   .build()).build();
 client = newClient(server.getPort());
 server.enqueue(new MockResponse());
 get(client, "/foo");
 RecordedRequest request = server.takeRequest();
 assertThat(request.getHeaders().toMultimap())
   .containsEntry("x-b3-sampled", asList("0"));
}

@Test public void customSampler() throws Exception {
 String path = "/foo";
 httpTracing = httpTracing.toBuilder().serverSampler(HttpRuleSampler.newBuilder()
   .addRule(null, path, 0.0f)
   .build()).build();
 init();
 Request request = new Request.Builder().url(url(path)).build();
 try (Response response = client.newCall(request).execute()) {
  assertThat(response.isSuccessful()).isTrue();
 }
 // @After will check that nothing is reported
}

@Test public void customSampler() throws Exception {
 close();
 httpTracing = httpTracing.toBuilder().clientSampler(HttpRuleSampler.newBuilder()
   .addRule(null, "/foo", 0.0f)
   .build()).build();
 client = newClient(server.getPort());
 server.enqueue(new MockResponse());
 get(client, "/foo");
 RecordedRequest request = server.takeRequest();
 assertThat(request.getHeaders().toMultimap())
   .containsEntry("x-b3-sampled", asList("0"));
}