start client

tools/info.cpp

@@ -0,0 +1,81 @@
+/**
+ * Copyright - See the COPYRIGHT that is included with this distribution.
+ * pvxs is distributed subject to a Software License Agreement found
+ * in file LICENSE that is included with this distribution.
+ */
+
+#include <iostream>
+#include <list>
+
+#include <epicsStdlib.h>
+#include <epicsGetopt.h>
+#include <epicsThread.h>
+
+#include <pvxs/client.h>
+#include <pvxs/log.h>
+#include "utilpvt.h"
+
+using namespace pvxs;
+
+namespace {
+
+void usage(const char* argv0)
+{
+    std::cerr<<"Usage: "<<argv0<<" <opts> [pvname ...]\n";
+}
+
+}
+
+int main(int argc, char *argv[])
+{
+    logger_config_env(); // from $PVXS_LOG
+    double timeout = 5.0;
+    bool verbose = false;
+
+    {
+        int opt;
+        while ((opt = getopt(argc, argv, "hvdw:")) != -1) {
+            switch(opt) {
+            case 'h':
+                usage(argv[0]);
+                return 0;
+            case 'v':
+                verbose = true;
+                break;
+            case 'd':
+                logger_level_set("pvxs.*", Level::Debug);
+                break;
+            case 'w':
+                if(epicsParseDouble(optarg, &timeout, nullptr)) {
+                    std::cerr<<"Invalid timeout value: "<<optarg<<"\n";
+                    return 1;
+                }
+                break;
+            default:
+                usage(argv[0]);
+                std::cerr<<"\nUnknown argument: "<<char(opt)<<std::endl;
+                return 1;
+            }
+        }
+    }
+
+    auto ctxt = client::Config::from_env().build();
+
+    if(verbose)
+        std::cout<<"Effective config\n"<<ctxt.config();
+
+    std::list<std::shared_ptr<client::Operation>> ops;
+
+    for(auto n : range(optind, argc)) {
+
+        ops.push_back(ctxt.info(argv[n])
+                      .result([&argv, n](Value&& prototype) {
+                          std::cout<<argv[n]<<"\n"<<prototype;
+                      })
+                      .exec());
+    }
+
+    epicsThreadSleep(timeout);
+
+    return 0;
+}