Examples with RemoteInstanceRequest com.netflix.exhibitor.core.automanage.RemoteInstanceRequest used on opensource projects

Example 1 with RemoteInstanceRequest

use of com.netflix.exhibitor.core.automanage.RemoteInstanceRequest in project exhibitor by soabase.

the class ClusterResource method makeRemoteRequest.

private String makeRemoteRequest(String methodName, String hostname, boolean responseIsJson, Callable<String> proc, Object... values) throws Exception {
    String remoteResponse;
    String errorMessage;
    if (hostname.equals("localhost") || hostname.equals(context.getExhibitor().getThisJVMHostname())) {
        remoteResponse = proc.call();
        errorMessage = "";
    } else {
        try {
            RemoteInstanceRequest request = new RemoteInstanceRequest(context.getExhibitor(), hostname);
            RemoteInstanceRequest.Result result = request.makeRequest(context.getExhibitor().getRemoteInstanceRequestClient(), methodName, values);
            remoteResponse = result.remoteResponse;
            errorMessage = result.errorMessage;
        } catch (Exception e) {
            remoteResponse = "{}";
            errorMessage = e.getMessage();
            if (errorMessage == null) {
                errorMessage = "Unknown";
            }
        }
    }
    ObjectMapper mapper = new ObjectMapper();
    ObjectNode node = JsonNodeFactory.instance.objectNode();
    if (responseIsJson) {
        node.put("response", mapper.readTree(mapper.getJsonFactory().createJsonParser(remoteResponse)));
    } else {
        node.put("response", remoteResponse);
    }
    node.put("errorMessage", errorMessage);
    node.put("success", errorMessage.length() == 0);
    return JsonUtil.writeValueAsString(node);
}

Example 2 with RemoteInstanceRequest

use of com.netflix.exhibitor.core.automanage.RemoteInstanceRequest in project exhibitor by soabase.

the class ConfigManager method checkNextInstanceState.

private ConfigCollection checkNextInstanceState(ConfigCollection config, List<String> rollingHostNames, int rollingHostNamesIndex) {
    if ((rollingHostNamesIndex + 1) >= rollingHostNames.size()) {
        // we're done - switch back to single config
        return new ConfigCollectionImpl(config.getRollingConfig(), null);
    }
    ConfigCollection newCollection = new ConfigCollectionImpl(config.getRootConfig(), config.getRollingConfig(), rollingHostNames, rollingHostNamesIndex + 1);
    RollingReleaseState state = new RollingReleaseState(new InstanceState(), newCollection);
    if (state.getCurrentRollingHostname().equals(exhibitor.getThisJVMHostname())) {
        return newCollection;
    }
    RollingConfigAdvanceAttempt activeAttempt = rollingConfigAdvanceAttempt.get();
    RemoteInstanceRequest.Result result;
    if ((activeAttempt == null) || !activeAttempt.getHostname().equals(state.getCurrentRollingHostname()) || (activeAttempt.getAttemptCount() < maxAttempts)) {
        RemoteInstanceRequest remoteInstanceRequest = new RemoteInstanceRequest(exhibitor, state.getCurrentRollingHostname());
        result = callRemoteInstanceRequest(remoteInstanceRequest);
        if (activeAttempt == null) {
            activeAttempt = new RollingConfigAdvanceAttempt(state.getCurrentRollingHostname());
            rollingConfigAdvanceAttempt.set(activeAttempt);
        }
        activeAttempt.incrementAttemptCount();
        if (result.errorMessage.length() != 0) {
            if (activeAttempt.getAttemptCount() >= maxAttempts) {
                exhibitor.getLog().add(ActivityLog.Type.INFO, "Exhausted attempts to connect to " + remoteInstanceRequest.getHostname() + " - skipping and moving on to next instance");
                // it must be down. Skip it.
                newCollection = checkNextInstanceState(config, rollingHostNames, rollingHostNamesIndex + 1);
            } else {
                exhibitor.getLog().add(ActivityLog.Type.INFO, "Could not connect to " + remoteInstanceRequest.getHostname() + " - attempt #" + activeAttempt.getAttemptCount());
                newCollection = null;
            }
        }
    } else {
        newCollection = null;
    }
    return newCollection;
}