builtinurl: initial working attempt

Note that the builtin URLs are disabled by default. To activate,
"builtinurl enable" or use the builtinurl_enable API.

See .../extras/http/sample.md for some Hugo-friendly .md w/ embedded
Javascript that accesses the builtin URLs.

Type: feature

Signed-off-by: Dave Barach <dave@barachs.net>
Change-Id: I6d82d9292c41d6d2d90be73ba8a1a043fb20c986

2 files changed, 84 insertions, 1 deletions

diff --git a/extras/http/sample.md b/extras/http/sample.md
new file mode 100644
index 00000000000..8451cedd8a5
--- /dev/null
+++ b/extras/http/sample.md
@@ -0,0 +1,82 @@
+---
+title: Home
+---
+
+# VPP Status
+
+### Here's the version...
+
+VPP version: <div id="VPPversion"></div>
+
+build date: <div id="VPPbuilddate"></div>
+
+<div id="like_button_container"></div>
+
+### Show Interface
+
+<p>Enter the interface name, then click "Submit" to display interface stats:</p>
+
+<input id="ifacename" type="text"></input>
+<button onclick="getStats()">Get Stats</button>
+
+<div id="ifacestats"></div>
+
+{{< rawhtml >}}
+
+<script>
+function getStats() {
+    var url="http://192.168.10.1:1234/interface_stats.json?";
+    var iface=document.getElementById("ifacename").value;
+    url=url.concat(iface);
+    fetch(url, {
+        method: 'POST',
+        mode: 'no-cors',
+        cache: 'no-cache',
+        headers: {
+                 'Content-Type': 'application/json',
+        },
+})
+.then((response) => response.json())
+.then(function(obj) {
+      console.log(obj)
+      var result=obj.interface_stats.name;
+      result = result.concat(": rx-pkts: ");
+      result = result.concat(obj.interface_stats.rx_packets);
+      result = result.concat(" rx-bytes: ");
+      result = result.concat(obj.interface_stats.rx_bytes);
+      result = result.concat(": tx-pkts: ");
+      result = result.concat(obj.interface_stats.tx_packets);
+      result = result.concat(" tx-bytes: ");
+      result = result.concat(obj.interface_stats.tx_bytes);
+      result = result.concat(" drops: ");
+      result = result.concat(obj.interface_stats.drops);
+      result = result.concat(" ip4: ");
+      result = result.concat(obj.interface_stats.ip4);
+      result = result.concat(" ip6: ");
+      result = result.concat(obj.interface_stats.ip6);
+
+      document.getElementById("ifacestats").innerHTML=result;
+})
+.catch(function(error) {
+      console.log(error);
+})}
+// unconditionally populate vpp version info ->
+fetch('http://192.168.10.1:1234/version.json', {
+    method: 'GET',
+    mode: 'no-cors',
+    cache: 'no-cache',
+    headers: {
+         'Content-Type': 'application/json',
+    },
+})
+.then((response) => response.json())
+.then(function(obj) {
+      document.getElementById("VPPbuilddate").innerHTML=obj.vpp_details.build_date;
+      document.getElementById("VPPversion").innerHTML=obj.vpp_details.version;
+})
+.catch(function(error) {
+      console.log(error);
+});
+</script>
+
+{{< /rawhtml >}}
diff --git a/extras/http/setup.http b/extras/http/setup.http
index 3b8da575a98..78b7a2f19e8 100644
--- a/extras/http/setup.http
+++ b/extras/http/setup.http
@@ -3,4 +3,5 @@ create tap host-if-name lstack host-ip4-addr 192.168.10.2/24
 set int ip address tap0 192.168.10.1/24
 set int state tap0 up
 
-http static server www-root /scratch/fdio-site-fork/public uri tls://0.0.0.0/1234 cache-size 10m fifo-size 2048
+http static server www-root <path> uri tcp://0.0.0.0/1234 cache-size 10m fifo-size 2048
+builtinurl enable