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EurekaPropertySourceLocator
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| @Configuration | |
| public class EurekaPropertySourceLocator implements PropertySourceLocator { | |
| private static final Logger log = LoggerFactory | |
| .getLogger(EurekaPropertySourceLocator.class); | |
| @Override | |
| public PropertySource<?> locate(Environment env) { | |
| try { | |
| String eurekaUrl = env.getProperty( | |
| "eureka.instance.client.serviceUrldefaultZone"); | |
| log.debug("eurekaUrl {} ", eurekaUrl); | |
| ResponseEntity<String> entity = new RestTemplate() | |
| .getForEntity(eurekaUrl + "/apps", String.class); | |
| JsonNode root = new ObjectMapper().readTree(entity.getBody()); | |
| // map eureka json for all vipAddress to spring environment -> | |
| // vipAddress.host and vipAddress.port if multiple are found first | |
| // is used | |
| Map<String, Object> eurekaProps = toStream( | |
| root.path("applications").path("application")) | |
| .flatMap(n -> toStream(n.path("instance"))) | |
| .filter(i -> i.path("status").asText().equals("UP")) | |
| .flatMap(this::vipHostAndPort) | |
| .collect(toMap(e -> e.getKey(), e -> e.getValue(), | |
| (first, second) -> first)); | |
| // http://stackoverflow.com/questions/27870136/java-lambda-stream-distinct-on-arbitrary-key | |
| log.debug("eurekaProps={}", eurekaProps); | |
| return new MapPropertySource("eurekaProperties", eurekaProps); | |
| } catch (Exception e) { | |
| log.error("", e); | |
| } | |
| return new MapPropertySource("eurekaProperties", new HashMap<>()); | |
| } | |
| private Stream<Map.Entry<String, Object>> vipHostAndPort(JsonNode i) { | |
| String vipAddress = i.path("vipAddress").asText(); | |
| return Stream.of( | |
| entry(vipAddress + ".host", i.path("hostName").asText()), | |
| entry(vipAddress + ".port", i.path("port").path("$").asText())); | |
| } | |
| private static Stream<JsonNode> toStream(JsonNode n) { | |
| return StreamSupport.<JsonNode> stream(n.spliterator(), false); | |
| } | |
| private static Map.Entry<String, Object> entry(String key, Object value) { | |
| return new AbstractMap.SimpleEntry<String, Object>(key, value); | |
| } | |
| } |
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Get eureka vip address host and port name as properties vipaddress.port and vipaddress.host