src/server.go: Add backward support for the old request format.

src/server.go

@@ -4,6 +4,7 @@ import (
     "fmt"
     "strings"
     "strconv"
+    "github.com/eosswedenorg/eosio-api-healthcheck/src/utils"
     "github.com/eosswedenorg/eosio-api-healthcheck/src/api"
     "github.com/eosswedenorg-go/eosapi"
     "github.com/eosswedenorg-go/haproxy/agentcheck"
@@ -60,23 +61,63 @@ func onTcpMessage(c *tcp_server.Client, args string) {
         return
     }
 
-    // 1. Api
-    a.api = split[0]
+    // Old format: <url> <version> <api> <block_time>
+    if utils.IsUrl(split[0]) {
 
-    // 2. url (scheme + ip/domain + port)
-    a.url = split[1]
+        logger.Warn("Deprecated format. Please change to the new format: <api>|<url>[|<block_time>|<host>]")
 
-    // 3. Block time.
-    if len(split) > 2 {
-        num, err := strconv.ParseInt(split[2], 10, 32)
-        if err == nil {
-            a.block_time = int(num)
+        // 1. url (scheme + ip/domain + port)
+        a.url = split[0]
+
+        // 2. api
+        if len(split) > 1 {
+            a.api = split[1]
         }
-    }
 
-    // 4. Host
-    if len(split) > 3 {
-        a.host = split[3]
+        // 3. Block time
+        if len(split) > 2 {
+            num, err := strconv.ParseInt(split[2], 10, 32)
+            if err == nil {
+                a.block_time = int(num)
+            }
+        }
+
+        // 4. Host
+        if len(split) > 3 {
+            a.host = split[3]
+        }
+
+    } else {
+
+        if len(split) < 2 {
+            msg := "Invalid number of parameters in agent request"
+
+            logger.Warn("Agent request error", "message", msg, "args", split)
+            resp := agentcheck.NewStatusMessageResponse(agentcheck.Failed, msg)
+
+            c.WriteString(resp.String())
+            c.Close()
+            return
+        }
+
+        // 1. Api
+        a.api = split[0]
+
+        // 2. url (scheme + ip/domain + port)
+        a.url = split[1]
+
+        // 3. Block time.
+        if len(split) > 2 {
+            num, err := strconv.ParseInt(split[2], 10, 32)
+            if err == nil {
+                a.block_time = int(num)
+            }
+        }
+
+        // 4. Host
+        if len(split) > 3 {
+            a.host = split[3]
+        }
     }
 
     // Check api.