Changeset 20588

Timestamp:

05/03/16 23:37:31 (9 years ago)

Author:

dlcheng

Message:

CHG (javascript): New streamed binary response handling for ec2_issm_dev cluster.

File:

• issm/trunk-jpl/src/m/classes/clusters/generic.js (modified) (1 diff)

issm/trunk-jpl/src/m/classes/clusters/generic.js

@@ -49 +49 @@
                 var oReq = new XMLHttpRequest();
                 oReq.open("POST", this.url, true);
-                oReq.responseType = 'arraybuffer';
-
+                oReq.responseType = 'application/octet-stream';
+                oReq.position = 0
+        
+                //TODO: dynamic progress update with package lengths and parsing
+                oReq.onprogress = function (oEvent) {
+                        var newResponse = oReq.responseText;
+                        if (newResponse.length == 13) { //"Starting" length as encoded in base64 length
+                                $(".run-button").html("COMPUTING...").prop("disabled", true);
+                                console.log("base64 repsonse: " + newResponse + " string response: " + window.atob(oReq.responseText));
+                        }
+                };
+                
                 oReq.onload = function (oEvent) {
-                        var returnBuffer = new Uint8Array(oReq.response.slice());
+                        //get context to this.str2ab to avoid duplciation
+                        function str2ab(str) {
+                                var buf = new Uint8Array(str.length);
+                                for (var i=0, strLen=str.length; i < strLen; i++) {
+                                        buf[i] = str.charCodeAt(i);
+                                }
+                                return buf;
+                        } //}}}
+                        var buffer2 = str2ab(window.atob(oReq.responseText.slice(13)));                 
+                        var returnBuffer = new Uint8Array(buffer2);
                         var returnBuffer_size=returnBuffer.byteLength;
-                        md.results= parseresultsfrombuffer(returnBuffer,returnBuffer_size);
+                        try {
+                                md.results= parseresultsfrombuffer(returnBuffer,returnBuffer_size);
+                        }
+                        catch (e) {
+                                console.log(e);
+                        }
                         callbackfunction();
                 };