Varnish cache is missed after some time - drupal-8

Varnish cache is missed after some time even though the Page cache maximum age in "GENERAL SETTINGS" of Advanced Varnish configuration is set to "1 month"
While overriding the TTL value from individual content type still it doesn't work.

There are many factors to affect the hit rate of your Varnish server.
Please share the following information:
The Cache-Control headers that your application sends
The VCL code
Your varnishd runtime parameters and specifically the value of the -s parameter
The output of varnishstat -f MAIN.n_lru_nuked -f MAIN.n_object -f SMA.*.g_bytes -f SMA.*.g_space
If there are specific transactions that result in a cache miss but that are supposed to be hits, please run send the output of the following command:
varnishlog -g request -q "ReqUrl eq '/'"
FYI: This varnishlog command filters transactions for the / homepage. If the problem occurs on another page, please adjust the -q filter.
Based on all this information I can check where the problem is situated.

Related

How to load data/update Power BI Dataset monthly

I've been asked to implement a way to load data to my datasets once a month. As Power BI Service doesn't have this option, I had to find a solution using Power Query and bellow I describe the step-by-step of my solution.
If it helps you at some way, please, let me know by posting a comment bellow. If you have a better and/or more elegant solution I'm glad to hear from you.
So, as my first solution didn't work, here I'll post the definity solution that we (me and my colleges) found.
I have to say that this solution is not so simple as it uses a Linux server, Gitlab and Jenkins, so it require a relative complex environment and I'll not describe how to build it.
At the end, I'll suggest a simpler solution.
THE ENVIRONMENT
On my company we use Jenkins to schedule jobs, Gitlab to store source code and we have a Linux Server to execute small tasks using Shell Script. For this problem I used all three services besides Power BI API.
JENKINS
I use Jenkins to schedule a job that run montlhy. This job was created using the following configs:
Parameters: I created 2 parameters (workspace_id and dataset_id) so I can test the script at any environment (Power BI Workspace) by just changing the value of those parameters;
Schedule Job: this job was schedule to run every day 1 at 02:00 a.m. As Jenkins uses the same sintax as CRON (I thing it is just a intermediate between you and CRON) the value of this field is 0 2 1 * *.
Build: as here we have a remote linux server to execute the scripts, I used a Execute shell script on remote host using ssh. I don't know why on Jenkins you can not execute the curl command direct on the job, it just didn't work, so I had to split the solution into both Jenkins and Linux server. At SSH site you have to select the credentials (previously created by my team) and at command are the commands bellow:
#Navigate to the script shell directory
cd "script-shell-script/"
# pulls the last version of the script. If you aren't using Gitlab,
# remove this command
git pull
# every time git pulls a new file version, it has read access.
# This command allows the execution of the filechmod +x powerbi_refresh_dataset.sh
# make a call to the file passing as parameter the workspace id and dataset id
./powerbi_refresh_dataset.sh $ID_WORKSPACE $ID_DATASET
SHELL SCIPT
As you already imagine, the core solution is the content of powerbi_refresh_dataset.sh. But, before going, there, you must understand how Power BI API works and you have to configure your Power BI environment to make API calls work. So, please, make sure that you already have your Principal Service properly configured by following this tutorial: https://learn.microsoft.com/en-us/power-bi/developer/embedded/embed-service-principal
Once you got your object_id, client_id and client_secret you can create your shell script file. Bellow is the code of my .sh file.
# load OBJECT_ID, CLIENT_ID and CLIENT_SECRET as environment variables
source credential_file.sh
# This command retrieves a new token from Microsoft Credentials Manager
token_msg=$(curl -X POST "https://login.windows.net/$OBJECT_ID/oauth2/token" \
-H 'Content-Type: application/x-www-form-urlencoded' \
-H 'Accept: application/json' \
-d 'grant_type=client_credentials&resource=https://analysis.windows.net/powerbi/api&client_id='$CLIENT_ID'&client_secret='$CLIENT_SECRET
)
# Extract the token from the response message
token=$(echo "$token_msg" | jq -r '.access_token')
# Ask Power BI to refresh dataset
refresh_msg=$(curl -X POST 'https://api.powerbi.com/v1.0/myorg/groups/'$1'/datasets/'$2'/refreshes' \
-H 'Authorization: Bearer '$token \
-H 'Content-Type: application/json' \
-d '{"notifyOption": "NoNotification"}')
And here goes some explanation. The first command is source credential_file.sh which loads 3 variables (OBJECT_ID, CLIENT_ID and CLIENT_SECRET). The intention here is to separate confidential info from the script so I can store the main script file on a version control (Git) and not disclosure any sensitivy information. So, besides powerbi_refresh_dataset.sh file you must have credential_file.sh at the same directory and with the following content:
OBJECT_ID=OBJECT_ID_VALUE
CLIENT_ID=CLIENT_ID_VALUE
CLIENT_SECRET=CLIENT_SECRET_VALUE
It's important to say that if you are using Git or any other version control, only powerbi_refresh_dataset.sh file goes to version control and credential_file.sh file must remain only at your Linux Server. I suggest you to save it's content into a password store application like keepass, as CLIENT_SECRET is not possible to retrieve.
FINAL CONSIDERATIONS
So above is the most relevant info of my solution. As you can see I'm ommiting (intentionally) how to build the environment and make them talk (jekins with linux, jenkins with Git and so on).
If all you have is a Linux or Windows host, I suggest you this:
Linux Host
On this simpler environment, just create the powerbi_refresh_dataset.sh and credential_file.sh, place it at any directory and create a CRON task to call powerbi_refresh_dataset as many time as you wish.
Windows Host
On windows you can do almost the same as on Linux, but you'll have to replace the content of shell script file by Power Shell command (google it) and use the Scheduled Task to regularly execute you Power Shell file.
Well, I think this would help you. I know it's not a complete answer as it will only works if you have a similar environment, but I hope that the final tips might help you.
Best regards
The Solution
First let me resume the solution. I just putted a condition execution at the end of each query that checks if today is the day where new data must be uploaded or not. If yes, it returns the step to be executed, if not, it raises a error.
There is many ways to implement that and I'll go from the simplest form to the more complex one.
Simplest Version: checking if it's the day to load new data directly at the query
This is the simplest way to implement the solution, but, depending on your dataset it may not be the smartest one.
Lets say you have this foo query:
let
step1 = ...,
...,
...,
step10 = SomeFunction(Somevariable, someparameter)
in
setp10
Now lets pretend you want that query to upload new data just on 1st day of the month. To do that, you just insert a condicional struction at in clause.
let
step1 = ...,
...,
...,
step10 = SomeFunction(Somevariable, someparameter)
in
if Date.Day(DateTime.LocalNow()) = 1 then setp10 else error "Today is not the day to load data"
At this example I just replaced the setp10 at the return of the query by this piece of code:if Date.Day(DateTime.LocalNow()) = 1 then setp10 else error "Today is not the day to load data". By doing that, setp10 will be the result of this query only if this query is been executed at day 1st of the month, otherwise, it will return a error.
And here it's worthy some explanation. Power Query is not a script language that runs at the same order that it's declared. So the fact the condicional statement was placed at the end of the query doesn't mean that all code above will be executed before the error is launched. As Power Query just executes what's necessary, the if... statement it will probably be the first one to be executed. For more info about how Power Query works behind the scene, I stronlgy recomend you this reading: https://bengribaudo.com/blog/2018/02/28/4391/power-query-m-primer-part5-paradigm
Using function
Now lets move foward. Lets say that your Dataset set has not only one, but many queries and all of them needs to be executed only once a month. In this case, a smart way to do that is by using what all other programming languages have to reuse block of code: create a function!
For this, create a new Blank Query and paste this code on its body:
(step) =>
let
result = if Date.Day(DateTime.LocalNow()) = 1 then step else error "Today is not the day to load data"
in
result
Now, at each query you'll call this function, sending the last setp as parameter. The function will check which day is today and return the same step passed as parameter if it's the day to load the data. Otherwise, it will return the error.
Bellow is the code of our query using our function called check_if_upload
let
step1 = ...,
...,
...,
step10 = SomeFunction(Somevariable, someparameter)
step11 = check_if_upload(step10)
in
step11
Using parameters
One final tip. As your query raises a error if today is not the day to upload day, it means that you can only test your ETL once a month, right? The error message also limite you to save you Power Query, which means that if you don't apply the modifications you can't upload the new Power Query version (having this implementations) to Power BI Service.
Well, you could change the value of the day verification into the function, but it's let's say, a little dummy.
A more ellegante way to change this parameter is by using parameters. So, lets do it. Create a parameter (I'll call it Upload Day) as a number type. Now, all you have to do is use this parameter at your function. It will look like this:
(step) =>
let
result = if Date.Day(DateTime.LocalNow()) = #"Upload Day" then step else error "Today is not the day to load data"
in
result
That's it. Now you can change the upload day directly at Power BI Service, just changing this parameter at the dataset (click on dataset name and goes to Settings >> Parameters).
Hope you neiled it and that its helpful for you.
Best regards.

what will be the query for check completion of workflow?

I have to cheack the status of workflow weather that workflow completed within scheduled time or not in sql query format. And also send an email of workflow status like 'completed within time ' or not 'completed within time'. So, please help me out
You can do it either using option1 or option 2.
You need access to repository meta database.
Create a post session shell script. You can pass workflow name and benchmark value to the shell script.
Get workflow run time from repository metadata base.
SQL you can use -
SELECT WORKFLOW_NAME,(END_TIME-START_TIME)*24*60*60 diff_seconds
FROM
REP_WFLOW_RUN
WHERE WORKFLOW_NAME='myWorkflow'
You can then compare above value with benchmark value. Shell script can send a mail depending on outcome.
you need to create another workflow to check this workflow.
If you do not have access to Metadata, please follow above steps except metadata SQL.
Use pmcmd GetWorkflowDetails to check status, start and end time for a workflow.
pmcmd GetWorkflowDetails -sv service -d domain -f folder myWorkflow
You can then grep start and end time from there, compare them with benchmark values. The problem is the format etc. You need little bit scripting here.

Facebook ad statistics - can't get facebook keyword stats

I have created a campaign, specified the interests in the ad and successfully executed the campaign which lasted 2 days. I have got around 9 website clicks and the reach was approximately 35000. I am trying to retrieve keyword stats through api but I am getting empty json object. I followed this link.
Here is the cURL command:
url -G -d "access_token=abcd" "https://graph.facebook.com/v2.7/ad_id/keywordstats"
And here is the result:
{"data":[]}
Why am I getting empty json object. Where am I going wrong? I need some assistance.
The keywordstats api only show the breakdown statistics for the ads that resulted in enough stats. In case some interests haven't resulted in any stats, they won't be included in the breakdown statistics .
As a rule of thumb, there is an average delay of 24 hours (before the stats are available). However, we've noticed that it can be less or more as well. Only Facebook will know the exact logic behind that.

MailGun - Exact API call to get count of deliverd messages between start and end date

Can someone help me what is the right mailgun API call to get the count of delivered messages between custom start and end date.
I have been trying with this but getting empty result:
curl.exe --user "api:key-XXXX" -G https://api.mailgun.net/v3/mydomain.com/stats/total -d event="delivered" -d start-date="Mon, 16 May 2016 00:00:00 GMT"
The maingun API documentation is here: https://documentation.mailgun.com/api-stats.html
MailGun support team is repeatedly pointing to the documentation but nobody is ready to provide me the workable API call. It is also surprising to see that MainGun administrative portal don't facilitate users to see number of emails sent between a range of dates!!! Anyway...
An old one, but I'd like to answer for future reference.
MailGun support team is repeatedly pointing to the documentation but
nobody is ready to provide me the workable API call.
They are correct - everything is in docs. In your particular case you are passing data with -d parameter, but you should use --data-urlencode instead (as shown in their API examples). Correct call:
curl --user "api:key-XXXX" -G https://api.mailgun.net/v3/mydomain.com/stats/total --data-urlencode event="delivered" --data-urlencode start-date="Mon, 16 May 2016 00:00:00 GMT"
Also, you might consider use start parameter instead of legacy start-date (recommended in their documentation).
It is also surprising to see that MainGun administrative portal don't facilitate users to see number of emails sent between a range of dates!!! Anyway...
At the moment of writing this answer, there is a Reporting tab that shows detailed stats for each type of event. It also allows you to select desired date range and filter results.

Proc http with https url

So, I want to use Google Url shortener Api, and I try to use
proc http
so, when I run this code
filename req "D:\input.txt";
filename resp "D:\output.txt";
proc http
url="https://www.googleapis.com/urlshortener/v1/url"
method="POST"
in=req
ct="application/JSON"
out=resp
;run;
(where D:\input.txt looks like {"longUrl": "http://www.myurl.com"} ) everything works greate on my home SAS Base 9.3. But, at work, on EG 4.3, I get:
NOTE: The SAS System stopped processing this step because of errors.
and no possible to debug. After googling, I found, that I have to set java system option like this
-jreoptions (-Djavax.net.ssl.trustStore=full-path-to-the-trust-store -Djavax.net.ssl.trustStorePassword=trustStorePassword)
But, where I can get "the certificate of the service to be trusted"- and password to it?
Edit: As I noticed in comments below, my work SAS installed into server, so I didn't have direct access to configuration. Also, It isn't good idea to change servers config. So, I try to google more, and found beautiful solution using cUrl, without X command (cause it block in my EG). Equivalent syntax is:
filename test pipe 'curl -X POST -d #D:\input.txt https://www.googleapis.com/urlshortener/v1/url --header "Content-Type:application/json"';
data _null_;
infile test missover lrecl= 32000;
input ;
file resp;
put _infile_;
run;
Hope it help someone
Where to get the certificate
Open the URL that you want the certificate from via Chrome. Click on the lock file in the URL bar, click on "details" tab and then click on "Save as file" in the bottom right. You will need to know what trust store you are going to use at this stage. See the following step.
The password and trust store is defined by you. It is in most cases nothing more than an encrypted zip file. There are a lot of tools out there that allow you to create a trust store, encrypt it and then import the certificates into it. The choice will depend on what OS you are using. There are some java based tools that OS independent, for example Portecle. It allows to define various trust stores on different OS and you can administer them remotely.
Regards,
Vasilij