From 73297c1ddb875280183e9f00fd0102eb874ef31c Mon Sep 17 00:00:00 2001
From: Franklin Hu <franklin@twitter.com>
Date: Wed, 27 Jun 2012 10:36:01 -0700
Subject: [PATCH] Add static query linking

* Show 'link' button for linking
* pushState the query params so going 'back' from a trace page loads
  the original search results

Author: @franklinhu
Fixes #51
URL: https://github.com/twitter/zipkin/pull/51
---
 .../assets/javascripts/application-index.js   | 73 +++++++++++++++++--
 zipkin-web/app/assets/javascripts/zipkin.js   | 17 +++++
 zipkin-web/app/views/traces/index.html.erb    |  1 +
 3 files changed, 83 insertions(+), 8 deletions(-)

diff --git a/zipkin-web/app/assets/javascripts/application-index.js b/zipkin-web/app/assets/javascripts/application-index.js
index 49714920b77..ead36c6a6cd 100644
--- a/zipkin-web/app/assets/javascripts/application-index.js
+++ b/zipkin-web/app/assets/javascripts/application-index.js
@@ -33,6 +33,11 @@ Zipkin.Application.Index = (function() {
   /* Data retrieved for a particular query */
   var traceData;
 
+  var useQueryParams = false;
+  var searchQuery = "";
+
+  var filter_submit;
+
   /* Makes ajax call to get and populate the service names field */
   var fetchServiceNames = function() {
     $.ajax({
@@ -100,6 +105,44 @@ Zipkin.Application.Index = (function() {
 
         spanSelector.change();
         $(".filter-submit button").removeAttr('disabled');
+
+        if (useQueryParams) {
+          /* Push any query params to the form and submit if they exist */
+          var selectSelector = function(name) { return 'select[name=' + name + ']'; };
+          var inputSelector = function(name) { return 'input[name=' + name + ']'; };
+
+          var formFields = {
+            "service_name"     : selectSelector('service_name'),
+            "span_name"        : selectSelector('span_name'),
+            "end_date"         : inputSelector('end_date'),
+            "end_time"         : inputSelector('end_time'),
+            "limit"            : inputSelector('limit'),
+            "time_annotation"  : inputSelector('time_annotation'),
+            "annotation_key"   : inputSelector('annotation_key'),
+            "annotation_value" : inputSelector('annotation_value')
+          };
+          var any = false;
+          $.each(useQueryParams, function(i, pair) {
+            var k = pair[0]
+              , v = pair[1]
+              ;
+            if (k === "adjust_clock_skew") {
+              if (v == "true") {
+                Zipkin.Base.enableClockSkewBtn();
+              } else if (v == "false") {
+                Zipkin.Base.disableClockSkewBtn();
+              }
+            } else if (k in formFields) {
+              var selector = formFields[k];
+              $(selector).val(v);
+              any = true;
+            }
+          });
+          if (any) {
+            filter_submit();
+          }
+          useQueryParams = false;
+        }
       },
       error: function(xhr, status, error) {
         $('#help-msg').hide();
@@ -134,13 +177,6 @@ Zipkin.Application.Index = (function() {
   };
 
   var initialize = function() {
-    Zipkin.Base.initialize();
-
-    fetchServiceNames();
-
-    /* Populate span selector after a service has been selected */
-    $('#service_name').change(serviceNameChange);
-
     /**
      * Helper functions for trace query results
      */
@@ -306,7 +342,7 @@ Zipkin.Application.Index = (function() {
     $(".service-tags").on("click", "li span.service-tag-close", labelRemove);
 
     /* Search for traces */
-    var filter_submit = function(adjust_clock_skew) {
+    filter_submit = function(adjust_clock_skew) {
 
       // Show some loading stuff while we wait for the query
       $('#help-msg').hide();
@@ -395,6 +431,10 @@ Zipkin.Application.Index = (function() {
           updateFilterTotalCount(data.length);
           updateFilterDuration(minStartTime, maxStartTime);
 
+          /* Shove the query string into the static link */
+          searchQuery = this.url.split("?")[1];
+          $("#static-search-link").attr("href", root_url + "?" + searchQuery).show();
+
           $(".infobar").show();
           $(".service-tag-list").show();
         },
@@ -474,6 +514,23 @@ Zipkin.Application.Index = (function() {
         refreshQueryResults(content);
       });
     });
+
+    $(document).on("click", "li.trace", function(e) {
+      history.pushState({}, "Zipkin", root_url + "?" + searchQuery);
+    });
+
+    Zipkin.Base.initialize();
+
+    var params = Zipkin.Util.queryParams();
+    if (params.length > 0) {
+      useQueryParams = params;
+    }
+
+    fetchServiceNames();
+
+    /* Populate span selector after a service has been selected */
+    $('#service_name').change(serviceNameChange);
+
   };
 
   return {
diff --git a/zipkin-web/app/assets/javascripts/zipkin.js b/zipkin-web/app/assets/javascripts/zipkin.js
index 7efebfbc956..b8ee1c0fec2 100644
--- a/zipkin-web/app/assets/javascripts/zipkin.js
+++ b/zipkin-web/app/assets/javascripts/zipkin.js
@@ -51,6 +51,22 @@ Zipkin.Util = (function(Zipkin) {
     }
   };
 
+  /**
+   * Parses the page query params and stuffs them into an object
+   */
+  var queryParams = function() {
+    var arr = [];
+    var str = location.search.substring(1);
+    str = decodeURIComponent(str);
+    $.each(str.split("&"), function(i, pair) {
+      var index = pair.indexOf("=");
+      if (index !== -1) {
+        arr.push([pair.substring(0, index), pair.substring(index+1)]);
+      }
+    });
+    return arr;
+  };
+
   /**
    * Convenience method for using Hogan templates. If we have already
    * fetched the template, initiate the callback. Otherwise, fetch it
@@ -86,6 +102,7 @@ Zipkin.Util = (function(Zipkin) {
     shallowCopy: shallowCopy,
     defaultDictPush: defaultDictPush,
     defaultDictGet: defaultDictGet,
+    queryParams: queryParams,
     templatize: templatize,
     TEMPLATES: TEMPLATES
   };
diff --git a/zipkin-web/app/views/traces/index.html.erb b/zipkin-web/app/views/traces/index.html.erb
index 13791902e29..d30e265c363 100644
--- a/zipkin-web/app/views/traces/index.html.erb
+++ b/zipkin-web/app/views/traces/index.html.erb
@@ -69,6 +69,7 @@
       <div class="sidebar-block filter-block-contents filter-submit">
         <button class="btn primary" disabled>Submit</button>
         <a data-toggle="modal" href="#lookup-help-modal" class="btn"><i class="icon-info-sign"></i></a>
+        <a id="static-search-link" class="hide pull-right">link</a>
       </div>
     </form>