conn_pool

Creating an authentication server.

I want a PGUserRepo struct, which implements a UserRepo trait async fn create.

The PGUserRepo should have a field that implements the Hasher trait.

However when I try to restrict the PGUserRepo field to be a dyn Hasher I get the error

"the trait std::marker::Send is not implemented for `(dyn domain::hasher::Hasher + 'static)".

If I make the PGUserRepo field the concrete implementing type, ArgonHasher, no error. But I don't want the PGUserRepo to care about what kind of Hasher was given to it, just that it implements the Hasher trait.

I have tried wrapping the hasher field in various combinations of Box, Arc, and Mutex, but I do not understand the root of why calling it an ArgonHasher is fine but saying it is some implementer of Hasher is not.

Code, collapsed to one file for convenience:

I'm trying to pass a psycopg2 cursor to a tweepy stream.

The connection pool and cursors are configured in a seperate file. Only the cursor is passed as an argument to the main pipeline function in another file called get_tweet_topic.py. I need the cursor in the on_status() method because I have a query there that needs it for execution.

I cannot figure out how to pass the cursor onto the on_status() method in the MyStreamListener() class.

the error I get is:

I am connecting database MySQL (MariaDB) from Python script using MySQLConnectionPool. I use context manager to hadle connection in the pool. I wonder if pool can expire if it is not used for a long amount of time or if my program collapsed. I've found that connection to MySQL db expires, do it is released even if you've forgot or have not been able to close connection in your program, what's situation with connections pool?

I am trying to experiment ssl connection in istio ingress gateway.

From here istio ssl gateway without termination, i assume that istio ingress gateway by default should terminate ssl.

I have installed istio with demo profile, via istioctl. I have also installed my service svc1.

Apart from these, below are what my resources are with routng logic:

I am new to envoy proxy, what I need is using envoy as sidecar proxy between grpc client and server.

So far, I have connected a grpc client and two server, with lb_policy set as ROUND_ROBIN. But when I close one of the servers, grpc client call would fail.

So, How can I config envoy to deal with this scenario?

This is my envoy config:

I am trying to set up a cluster with Istio on it, where the SSL traffic gets terminated at the Ingress. I have deployed Istio with SDS and Mutual TLS. With the below yaml, I only get the error message upstream connect error or disconnect/reset before headers. reset reason: connection failure when accessing my cluster in the browser:

I have a GKE cluster (gke v1.13.6) and using istio (v1.1.7) with several services deployed and working successfully except one of them which always responds with HTTP 503 when calling through the gateway : upstream connect error or disconnect/reset before headers. reset reason: connection failure.

I've tried calling the pod directly from another pod with curl enabled and it ends up in 503 as well :

I am using the ext-authz filter using a cluster setting like below:

I want to use evpp library in my project but I cannot build it in my OS. My OS is Linux mint 18.1 and and I use the release build script in tools folder (release-build.sh). I am getting the following errors;