I'm trying to query my Server 2012 Essentials R2 server to determine the most recent Client Backup time for a given Device, so I can display nag screens at signon for forgetful users. (They're on laptops, so I can't depend on the machine being available during the automatic window.)
The closest thing in the way of documentation I've been able to find is this: (https://msdn.microsoft.com/en-us/library/jj713757.aspx)
GET services/builtin/DeviceManagement.svc/devices/index/{index}/count/{count}
But it requires a preceding call to get the token: (https://msdn.microsoft.com/en-us/library/jj713753.aspx)
GET https://www.contoso.com/services/builtin/session.svc/login HTTP/1.1
Accept: application/xml
Host: servername
Authorization: Basic VXNlcjpQYXNzd29yZCE=
AppName: Sample App Name
AppPublisher: publisher
AppVersion: 1.0
Does anyone know what the values for those last three headers should be—or how to discover them—for a standard WSE 2012 R2 installation? The documentation provides no assistance here.
Or if someone knows a better way to accomplish this, please let me know.
OK, I got it working. The code is below.
As it turns out, the value of the AppName header is irrelevant—it can be any string, but it can't be empty.
I already knew it couldn't be empty from a look at the WSE source in Wssg.WebApi.Framework in the GAC, but the code is decoupled to the point that it's next to impossible to find out what process picks up the the RemoteConnectionClientInfo object once it gets dropped into the HTTP session.
The part that was misleading me was—go figure—the documentation itself.
There's a bang (!) after the password on the Authentication page, suggesting that it should trail the actual password prior to encoding. This was why I was getting an authentication error, which in turn I was (mistakenly) attributing to the statement in the documentation: "Add Appname, Apppublisher, and Appversion values in HTTP header fields. These values are also required to log on."
So once I cleared all that up, I sailed right in.
And there are other errors in the documentation. On the Devices page we are told that the Host header should be set to the domain name, and that a Content-Length header should be added.
These are both incorrect. The Host header should be the server's hostname and there should be no Content-Length header (that's a response header, not a request header).
AND...! After all this, I find that the Device info returned doesn't contain the most recent backup time. I'll have to dig further for that. But at least now I can connect.
So Microsoft's incomplete, inaccurate and sloppy documentation has cost me a day's work. Hopefully somebody else can use this and avoid the pain I went through.
Module Main
Public Sub Main()
Dim aCredentials() As Byte
Dim _
oAuthenticateUri,
oDeviceListUri As Uri
Dim _
sCanary,
sCookie,
sDevices As String
aCredentials = Encoding.ASCII.GetBytes($"{USERNAME}:{PASSWORD}")
Using oClient As New HttpClient
oAuthenticateUri = New Uri($"https://{HOST}/services/builtin/session.svc/login")
oDeviceListUri = New Uri($"https://{HOST}/services/builtin/devicemanagement.svc/devices/index/0/count/99")
oClient.DefaultRequestHeaders.Accept.Add(New MediaTypeWithQualityHeaderValue("application/xml"))
oClient.DefaultRequestHeaders.Authorization = New AuthenticationHeaderValue("Basic", Convert.ToBase64String(aCredentials))
oClient.DefaultRequestHeaders.Host = HOST
oClient.DefaultRequestHeaders.Add("AppPublisher", String.Empty)
oClient.DefaultRequestHeaders.Add("AppVersion", String.Empty)
oClient.DefaultRequestHeaders.Add("AppName", "None")
Using oAuthenticateResponse As HttpResponseMessage = oClient.GetAsync(oAuthenticateUri).Result
If oAuthenticateResponse.IsSuccessStatusCode Then
sCanary = oAuthenticateResponse.Headers.Single(Function(Pair) Pair.Key = CANARY_HEADER).Value(0)
sCookie = Split(oAuthenticateResponse.Headers.Single(Function(Pair) Pair.Key = COOKIE_HEADER).Value(0), ";")(0)
oClient.DefaultRequestHeaders.Clear()
oClient.DefaultRequestHeaders.Host = HOST
oClient.DefaultRequestHeaders.Add(CANARY_HEADER, sCanary)
oClient.DefaultRequestHeaders.Add(COOKIE_HEADER, sCookie)
Using oDeviceListResponse As HttpResponseMessage = oClient.GetAsync(oDeviceListUri).Result
If oDeviceListResponse.IsSuccessStatusCode Then
sDevices = oDeviceListResponse.Content.ReadAsStringAsync.Result
Else
Console.WriteLine("{0} ({1})", oDeviceListResponse.StatusCode, oDeviceListResponse.ReasonPhrase)
End If
End Using
Else
Console.WriteLine("{0} ({1})", oAuthenticateResponse.StatusCode, oAuthenticateResponse.ReasonPhrase)
End If
End Using
End Using
End Sub
Private Const CANARY_HEADER As String = "Canary"
Private Const COOKIE_HEADER As String = "Set-Cookie"
Private Const USERNAME As String = "domain.admin"
Private Const PASSWORD As String = "admin.password"
Private Const HOST As String = "server"
End Module
I have an application that listens for a cell click in a DT in any cell and then updates a plot accordingly. The program works perfectly when I runApp() locally. However when I depoloy the app on a shiny server, the click no longer triggers any actions. This discepancy does not exists for other action listeners such as a simple refresh button, as I have demonstrated in the code below. You can see how the discrepancy between remote and local does not exist for the refresh button condition input$refreshButton!=0, but there is a discrepancy using the length(input$table_cell_clicked)>0 trigger condition.
I have done some research into this error and this is what I know so far:
1) I am getting the warning "Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience." in the console when the app is deployed remotely. I am told this has something to do with a setting in a file in my shiny server called javascript.min.js and jquery.min.js that says c.async="false" I have searched for every file on my serer with that name or containing the string async="false", and changed the setting to sync="true". However I did not find any files with the exact string c.async="true". I can see the file with this string in the browser console, which gives a location relative to server::port/, but I do not know where that file actually lives on my system, and I suspect it is just a file made on the fly by shiny services.
2) It is possible that this could be fixed with something related to the selectize functionality in some shiny inputs, which may cause the code to execute asynchronously(?). I have tried a few different things but couldn't get any to solve the problem.
3) There is a commonly known annoyance with shiny that it is generally hard to debug. In my case, it would be extremely helpful if I could see the output of the server.R functions as I would when using runApp() locally. Using a call to browser, options(shiny.trace = T) were both recommended, but when I add them to the code below, nothing apprears in the console output. I even tried using sink in order to save to output to some file on the remote server, and it rusn without error, but I do not see any file in the location indicated. If I could at least see the output of this file, or the request/response messages between the server and the client it would go a long way towards debugging this.
So the two questions are: how can I see these messages/output when the app is deployed remotely? And more importantly, how can I implement a fix so that all of my hard work on this project (unfortunately can't disclose any details) will not be a waste.
The basic code for my shiny app is below.
server.R:
server <- function(input, output, session) {
options(shiny.trace = T)
browser()
sink("~/outputfile.txt",append = T,type = "output",split = T)
end_date=as.character(as.Date(Sys.Date()-10))
library(DT)
library(data.table)
library(xtable)
library(zoo)
library(lattice)
library(RSQLite)
output$table = DT::renderDataTable({
thisTable = head(iris)
return(thisTable)
},server = T,options = list(target = 'cell'))
output$plot1 <- renderPlot({
cell= as.numeric(input$table_cell_clicked)
print(cell)
row = as.numeric(input$transtable_row_last_clicked)
print(paste0("last row clicked: ",row))
print(paste0("timestamp: ",Sys.time()))
(cell, file = "/home/plintilhac/cell_file.txt") ## causes error that dumps SND and REC messages to javascript console
# if (length(input$row_last_clicked)>0){ ##works remotely and locally
# if (input$refreshButton!=0){ ##works remotely and locally
if (length(cell)>0){ #works locally, but doesn't work remotely
plot(0,0,xlim = c(-1,1),ylim = c(-1,1))
}
else{return(plot(0,1,xlim = c(-1,1),ylim = c(-1,1)))}}
)
output$text1 <- renderText({
if (input$refreshButton!=0){
"clicked"
}
else{"unclicked"}
})
}
ui.R
shinyUI(
fluidPage(
fluidRow(plotOutput("plot1",click = "plot_click"),theme = "bootstrap.css"),
mainPanel(
DT::dataTableOutput('table'),
fluidRow(
actionButton("refreshButton", "refresh")
)
)
))
EDIT:
I was able to get some output by placing an erroneous line of code right after the cell variable is defined, causing the shiny server to dump output to the javascript console. At this time this is the only way I know how to capture any output. However, the output is quite informative, as it shows that the table_cell_clicked attribute is not being exported on the remote server at all, whereas other attributes such as row_last_clicked are.
here is the output I get when the server is run locally ithout the erroneous line (note it includes table_cell_clicked as a feature):
SEND
{"config":{"workerId":"","sessionId":"ef292cd0c98baee4afa504aa8330b49e"}}
RECV
{"method":"init","data":{"refreshButton:shiny.action":0,".clientdata_output_plot1_width":873,".clientdata_output_plot1_height":400,".clientdata_output_plot1_hidden":false,".clientdata_output_table_hidden":false,".clientdata_pixelratio":1.100000023841858,".clientdata_url_protocol":"http:",".clientdata_url_hostname":"d2rm01",".clientdata_url_port":"8787",".clientdata_url_pathname":"/p/4944/",".clientdata_url_search":"",".clientdata_url_hash_initial":"",".clientdata_singletons":"",".clientdata_allowDataUriScheme":true}}
SEND
{"errors":[],"values":{"table":{"x":{"filter":"none","container":"<table
class=\"display\">\n <thead>\n <tr>\n <th> </th>\n
<th>Sepal.Length</th>\n <th>Sepal.Width</th>\n
<th>Petal.Length</th>\n <th>Petal.Width</th>\n
<th>Species</th>\n </tr>\n
</thead>\n</table>","options":{"target":"cell","selectize":true,"columnDefs":[{"className":"dt-right","targets":[1,2,3,4]},{"orderable":false,"targets":0}],"order":[],"autoWidth":false,"orderClasses":false,"ajax":{"url":"session/ef292cd0c98baee4afa504aa8330b49e/dataobj/table?w=","type":"POST","data":"function(d)
{\nd.search.caseInsensitive = true;\nd.escape = true;\nvar encodeAmp
= function(x) { x.value = x.value.replace(/&/g, \"%26\"); }\nencodeAmp(d.search);\n$.each(d.columns, function(i, v)
{encodeAmp(v.search);});\n}"},"serverSide":true,"processing":true},"selection":{"mode":"multiple","selected":null,"target":"row"}},"evals":["options.ajax.data"],"deps":[{"name":"datatables","version":"1.10.7","src":{"file":"/home/plintilhac/R/x86_64-pc-linux-gnu-library/3.2/DT/htmlwidgets/lib/datatables/js","href":"datatables-1.10.7"},"meta":null,"script":"jquery.dataTables.min.js","stylesheet":null,"head":null,"attachment":null},{"name":"datatables-default","version":"1.10.7","src":{"file":"/home/plintilhac/R/x86_64-pc-linux-gnu-library/3.2/DT/htmlwidgets/lib/datatables/css/default","href":"datatables-default-1.10.7"},"meta":null,"script":[],"stylesheet":["dataTables.extra.css","jquery.dataTables.min.css"],"head":null,"attachment":null}]},"plot1":{"src":"data:image/png;[base64
data]","width":873,"height":400,"coordmap":[{"domain":{"left":-1.08,"right":1.08,"bottom":-1.08,"top":1.08},"range":{"left":58.9093125,"right":842.8269375,"bottom":325.745454545455,"top":57.8909090909091},"log":{"x":null,"y":null},"mapping":{}}]}},"inputMessages":[]}
RECV
{"method":"update","data":{"table_rows_selected":[],"table_rows_current":[],"table_rows_all":[],"table_state":null,"table_search":"","table_cell_clicked":{}}}
SEND {"progress":{"type":"binding","message":{"id":"plot1"}}} SEND
{"errors":[],"values":{"plot1":{"src":"data:image/png;[base64
data]","width":873,"height":400,"coordmap":[{"domain":{"left":-1.08,"right":1.08,"bottom":-1.08,"top":1.08},"range":{"left":58.9093125,"right":842.8269375,"bottom":325.745454545455,"top":57.8909090909091},"log":{"x":null,"y":null},"mapping":{}}]}},"inputMessages":[]}
RECV
{"method":"update","data":{"table_rows_current":[1,2,3,4,5,6],"table_rows_all":[1,2,3,4,5,6]}}
RECV {"method":"update","data":{"plot_click":null}} RECV
{"method":"update","data":{"table_cell_clicked":{"row":1,"col":2,"value":3.5},"table_rows_selected":[1],"table_row_last_clicked":1}}
SEND {"progress":{"type":"binding","message":{"id":"plot1"}}} SEND
{"errors":[],"values":{"plot1":{"src":"data:image/png;[base64
data]","width":873,"height":400,"coordmap":[{"domain":{"left":-1.08,"right":1.08,"bottom":-1.08,"top":1.08},"range":{"left":58.9093125,"right":842.8269375,"bottom":325.745454545455,"top":57.8909090909091},"log":{"x":null,"y":null},"mapping":{}}]}},"inputMessages":[]}
RECV {"method":"update","data":{"table_rows_selected":[]}}
while this is the output when it is run remotely with the erroneous line (note table_cell_clicked is not being received):
Loading required package: DBI
SEND {"errors":[],"values":{"table":{"x":{"container":"<table class=\"display\">\n <thead>\n <tr>\n <th> </th>\n <th>Sepal.Length</th>\n <th>Sepal.Width</th>\n <th>Petal.Length</th>\n <th>Petal.Width</th>\n <th>Species</th>\n </tr>\n </thead>\n</table>","options":{"target":"cell","selectize":true,"columnDefs":[{"className":"dt-right","targets":[1,2,3,4]},{"orderable":false,"targets":0}],"order":[],"autoWidth":false,"orderClasses":false,"ajax":{"url":"session/07190712bb533d7cf1929522b19e436a/dataobj/table?w=","type":"POST","data":"function(d) {\nd.search.caseInsensitive = true;\nd.escape = true;\n}"},"serverSide":true,"processing":true},"callback":null,"filter":"none","selection":"multiple"},"evals":["options.ajax.data"],"deps":[{"name":"datatables","version":"1.10.7","src":{"file":"/usr/local/lib/R/site-library/DT/htmlwidgets/lib/datatables/js","href":"datatables-1.10.7"},"meta":null,"script":"jquery.dataTables.min.js","stylesheet":null,"head":null,"attachment":null},{"name":"datatables-default","version":"1.10.7","src":{"file":"/usr/local/lib/R/site-library/DT/htmlwidgets/lib/datatables/css/default","href":"datatables-default-1.10.7"},"meta":null,"script":[],"stylesheet":["dataTables.extra.css","jquery.dataTables.min.css"],"head":null,"attachment":null}]},"plot1":{"src":"data:image/png;[base64 data]","width":1745,"height":400,"coordmap":[{"domain":{"left":-1.08,"right":1.08,"bottom":-1.08,"top":1.08},"range":{"left":58.9062532569046,"right":1714.82850442939,"bottom":325.745454545455,"top":57.8909090909091},"log":{"x":null,"y":null},"mapping":{}}]}},"inputMessages":[]}
RECV {"method":"update","data":{"table_rows_selected":[],"table_rows_current":[],"table_rows_all":[],"table_state":null,"table_search":""}}
RECV {"method":"update","data":{"table_rows_current":["1","2","3","4","5","6"],"table_rows_all":["1","2","3","4","5","6"]}}
RECV {"method":"update","data":{"table_rows_selected":["3"],"table_row_last_clicked":"3"}}
RECV {"method":"update","data":{".clientdata_output_plot1_width":463}}
SEND {"progress":{"type":"binding","message":{"id":"plot1"}}}
SEND {"errors":[],"values":{"plot1":{"src":"data:image/png;[base64 data]","width":463,"height":400,"coordmap":[{"domain":{"left":-1.08,"right":1.08,"bottom":-1.08,"top":1.08},"range":{"left":58.9256188605108,"right":432.81858546169,"bottom":325.745454545455,"top":57.8909090909091},"log":{"x":null,"y":null},"mapping":{}}]}},"inputMessages":[]}
RECV {"method":"update","data":{"plot_click":null}}
SEND {"config":{"workerId":"","sessionId":"7b20c500ee810e198324a75b6512a353"}}
RECV {"method":"init","data":{"refreshButton:shiny.action":0,"ss-net-opt-websocket":true,"ss-net-opt-xdr-streaming":true,"ss-net-opt-xhr-streaming":true,"ss-net-opt-iframe-eventsource":true,"ss-net-opt-iframe-htmlfile":true,"ss-net-opt-xdr-polling":true,"ss-net-opt-xhr-polling":true,"ss-net-opt-iframe-xhr-polling":true,"ss-net-opt-jsonp-polling":true,".clientdata_output_plot1_width":463,".clientdata_output_plot1_height":400,".clientdata_output_plot1_hidden":false,".clientdata_output_table_hidden":false,".clientdata_pixelratio":1.100000023841858,".clientdata_url_protocol":"http:",".clientdata_url_hostname":"d2rm01",".clientdata_url_port":"3838",".clientdata_url_pathname":"/testFunnel/",".clientdata_url_search":"",".clientdata_url_hash_initial":"",".clientdata_singletons":"",".clientdata_allowDataUriScheme":true}}
Error in source(file, ..., keep.source = TRUE, encoding = checkEncoding(file)) :
/srv/shiny-server/testFunnel/server.R:38:10: unexpected ','
37: #print(paste0("timestamp: ",Sys.time()))
38: (cell,
I have the following Business Process defined within a Production on an Intersystems Cache Installation
/// Makes a call to Merlin based on the message sent to it from the pre-processor
Class sgh.Process.MerlinProcessor Extends Ens.BusinessProcess [ ClassType = persistent, ProcedureBlock ]
{
Property WorkingDirectory As %String;
Property WebServer As %String;
Property CacheServer As %String;
Property Port As %String;
Property Location As %String;
Parameter SETTINGS = "WorkingDirectory,WebServer,Location,Port,CacheServer";
Method OnRequest(pRequest As sgh.Message.MerlinTransmissionRequest, Output pResponse As Ens.Response) As %Status
{
Set tSC=$$$OK
Do ##class(sgh.Utils.Debug).LogDebugMsg("Packaging an HTTP request for Saved form "_pRequest.DateTimeSaved)
Set dateTimeSaved = pRequest.DateTimeSaved
Set patientId = pRequest.PatientId
Set latestDateTimeSaved = pRequest.LatestDateTimeSaved
Set formName = pRequest.FormName
Set formId = pRequest.FormId
Set episodeNumber = pRequest.EpisodeNumber
Set sentElectronically = pRequest.SentElectronically
Set styleSheet = pRequest.PrintName
Do ##class(sgh.Utils.Debug).LogDebugMsg("Creating HTTP Request Class")
set HTTPReq = ##class(%Net.HttpRequest).%New()
Set HTTPReq.Server = ..WebServer
Set HTTPReq.Port = ..Port
do HTTPReq.InsertParam("DateTimeSaved",dateTimeSaved)
do HTTPReq.InsertParam("HospitalNumber",patientId)
do HTTPReq.InsertParam("Episode",episodeNumber)
do HTTPReq.InsertParam("Stylesheet",styleSheet)
do HTTPReq.InsertParam("Server",..CacheServer)
Set Status = HTTPReq.Post(..Location,0) Quit:$$$ISERR(tSC)
Do ##class(sgh.Utils.Debug).LogDebugMsg("Sent the following request: "_Status)
Quit tSC
}
}
The thing is when I check the debug value (which is defined as a global) all I get is the number '1' - I have no idea therefore if the request has succeeded or even what is wrong (if it has not)
What do I need to do to find out
A) What is the actual web call being made?
B) What the response is?
There is a really slick way to get the answer the two questions you've asked, regardless of where you're using the code. Check the documentation out on the %Net.HttpRequest object here: http://docs.intersystems.com/ens20102/csp/docbook/DocBook.UI.Page.cls?KEY=GNET_http and the class reference here: http://docs.intersystems.com/ens20102/csp/documatic/%25CSP.Documatic.cls?APP=1&LIBRARY=ENSLIB&CLASSNAME=%25Net.HttpRequest
The class reference for the Post method has a parameter called test, that will do what you're looking for. Here's the excerpt:
method Post(location As %String = "", test As %Integer = 0, reset As %Boolean = 1) as %Status
Issue the Http 'post' request, this is used to send data to the web server such as the results of a form, or upload a file. If this completes correctly the response to this request will be in the HttpResponse. The location is the url to request, e.g. '/test.html'. This can contain parameters which are assumed to be already URL escaped, e.g. '/test.html?PARAM=%25VALUE' sets PARAM to %VALUE. If test is 1 then instead of connecting to a remote machine it will just output what it would have send to the web server to the current device, if test is 2 then it will output the response to the current device after the Post. This can be used to check that it will send what you are expecting. This calls Reset automatically after reading the response, except in test=1 mode or if reset=0.
I recommend moving this code to a test routine to view the output properly in terminal. It would look something like this:
// To view the REQUEST you are sending
Set sc = request.Post("/someserver/servlet/webmethod",1)
// To view the RESPONSE you are receiving
Set sc = request.Post("/someserver/servlet/webmethod",2)
// You could also do something like this to parse your RESPONSE stream
Write request.HttpResponse.Data.Read()
I believe the answer you want to A) is in the Server and Location properties of your %Net.HttpRequest object (e.g., HTTPReq.Server and HTTPReq.Location).
For B), the response information should be in the %Net.HttpResponse object stored in the HttpResponse property (e.g. HTTPReq.HttpResponse) after your call is completed.
I hope this helps!
-Derek
(edited for formatting)
From that code sample it looks like you're using Ensemble, not straight-up Cache.
In that case you should be doing this HTTP call in a Business Operation that uses the HTTP Outbound Adapter, not in your Business Process.
See this link for more info on HTTP Adapters:
http://docs.intersystems.com/ens20102/csp/docbook/DocBook.UI.Page.cls?KEY=EHTP
You should also look into how to use the Ensemble Message Browser. That should help with your logging needs.