On client run gatway script

448719222 · December 5, 2021, 4:37pm

I have developed a script module. This script can only be executed on the gatway because it involves some files on the server. Now I want to call this script on the client. What should I do

pturmel · December 5, 2021, 5:29pm

You will need to use the RPC (remote procedure call) infrastructure of Ignition. There’s an example in the SDK that shows the basics.

bmusson · December 5, 2021, 5:41pm

In my Orekit module, I stream/cache files between the gateway and clients using web requests.

Gateway:

github.com

benmusson/ignition-orekit-module/blob/main/gateway/src/main/java/com/github/benmusson/ignition/orekit/gateway/api/v1/GatewayRouteHandler.java

package com.github.benmusson.ignition.orekit.gateway.api.v1;

import com.github.benmusson.ignition.orekit.common.api.v1.EndpointProvider;
import com.github.benmusson.ignition.orekit.gateway.api.RouteHandlerMounter;
import com.github.benmusson.ignition.orekit.gateway.db.OrekitInternalConfiguration;
import com.inductiveautomation.ignition.common.gson.JsonArray;
import com.inductiveautomation.ignition.common.gson.JsonElement;
import com.inductiveautomation.ignition.common.gson.JsonObject;
import com.inductiveautomation.ignition.gateway.dataroutes.HttpMethod;
import com.inductiveautomation.ignition.gateway.dataroutes.RouteGroup;
import com.inductiveautomation.ignition.gateway.model.GatewayContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.File;
import java.nio.file.Files;

public class GatewayRouteHandler implements RouteHandlerMounter {

    private final Logger logger = LoggerFactory.getLogger(getClass());

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Client:

github.com

benmusson/ignition-orekit-module/blob/main/client/src/main/java/com/github/benmusson/ignition/orekit/client/api/v1/OrekitAPIClient.java

package com.github.benmusson.ignition.orekit.client.api.v1;

import com.github.benmusson.ignition.orekit.client.data.ClientFileCache;
import com.inductiveautomation.ignition.client.model.ClientContext;
import com.inductiveautomation.ignition.common.gson.JsonArray;
import com.inductiveautomation.ignition.common.gson.JsonObject;
import com.inductiveautomation.ignition.common.gson.JsonParser;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.util.Optional;

public class OrekitAPIClient {

    private final HttpClient client;

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pturmel · December 5, 2021, 5:50pm

Are you implementing any security? Ignition's RPC infrastructure only works through authenticated channels--you only have to check roles, and only if applicable.

bmusson · December 5, 2021, 6:05pm

Nothing meaningful at this point. The accessible directories are limited but there’s no user authentication. I chose web requests instead of RPC in order to share the files with non-Ignition clients.