I am thinking to use it as a grpc proxy, so not HTTP <-> Arrow Flight grpc, but I am still looking into it. Thanks for explaining those patterns. Can i use grpcurl to call Arrow Flight?
________________________________ From: kekronbekron <kekronbek...@protonmail.com> Sent: Sunday, March 16, 2025 11:06 PM To: user@arrow.apache.org <user@arrow.apache.org> Subject: Re: api gateway with arrow flight grpc Yes, an API gateway in front surely helps, especially if you "front" this with an HTTP server rather than gRPC. 3 different patterns - 1: API gateway / reverse proxy --> HTTP server --> Flight Server GET bla.com/pipe --> connects to a duckdb file via Flight and sends stuff over 2: API gateway / reverse proxy --> HTTP server --> Flight SQL GET bla.com/pipe --> connects to a duckdb file and sends SQL over Advantage is that you can now connect to the Flight SQL server with JDBC/ADBC even outside of this app, essentially adding concurrency to the backing (Duck)DBs... on top of concurrent access to the DB(s) _in_ this program 3: API gateway / reverse proxy --> HTTP server --> ADBC https://arrow.apache.org/blog/2025/03/10/fast-streaming-inserts-in-duckdb-with-adbc/ This removes the need for Flight altogether and appends directly into DBs with the ADBC driver manager. With HTTP in the front, you can route requests to whichever DB you want. However, managing replication (or dual write) b/w clones/copies of DBs needs some thinking. In DuckDB's case, it's challenging because remote attach over https/s3 is readonly. So even if you stream out IPC in your HTTP server's function (for the /pipe route), you'd need a second HTTP server to receive IPC and write it in... which is fine and still works. But do note that this means accessing the DBs entirely via HTTP, so most of the securty etc will be at the API gateway / HTTP layer. On Monday, March 17th, 2025 at 06:41, Z A <z11...@outlook.com> wrote: Thanks all for the reply and insights! I am going to investigate the grpc passthru feature which is supported by the API gateway product. Btw, I wrote a simple Arrow Flight Server in python, but I couldn't figure out how to call it from grpcurl (all my attempts failed), is that even possible? ________________________________ From: Hélder Gregório <helder.grego...@dremio.com> Sent: Saturday, March 15, 2025 8:28 AM To: user@arrow.apache.org <user@arrow.apache.org> Subject: Re: api gateway with arrow flight grpc Hi, I'm not sure about integration with the services you mentioned but assuming some responsibilities of the API Gateway are handling authentication and load balancing, you can implement a flight proxy by creating a service that implements FlightProducer interface. The service can access headers for validation if needed and redirect vectors it receives to the designated flight server using another flight client. Hope it helps On Sat, Mar 15, 2025 at 3:03 AM kekronbekron <kekronbek...@protonmail.com<mailto:kekronbek...@protonmail.com>> wrote: Sure - https://www.definite.app/blog/duck-takes-flight https://blobs.duckdb.org/events/duckcon6/rusty-conover-airport-for-duckdb-letting-duckdb-take-apache-arrow-flights.pdf On Saturday, March 15th, 2025 at 01:25, Bryce Mecum <bryceme...@gmail.com<mailto:bryceme...@gmail.com>> wrote: > Hi kekronbekron, can you share any pointers to the pattern you mention > and where people are talking about it? It sounds like something I > might be interested in tracking. > > On Thu, Mar 13, 2025 at 7:27 PM kekronbekron > kekronbek...@protonmail.com<mailto:kekronbek...@protonmail.com> wrote: > > > I'm embarking on exactly this. > > Amusing how this pattern has become "vocal" in the past few weeks, though > > Flight has existed for a few years now. > > > > On Friday, March 14th, 2025 at 03:56, Paul Whalen > > pgwha...@gmail.com<mailto:pgwha...@gmail.com> wrote: > > > > I haven’t used anything you’ve mentioned, but I have deployed an arrow > > flight server in an istio/envoy service mesh, and seen all the benefits of > > gRPC in that context without any trouble. > > > > I’ve often though it would be fun to write an envoy filter for the Flight > > or Flight SQL protocol, but it isn’t clear to me that there’s much demand > > for it (for comparison, there’s one for Postgres: > > https://www.envoyproxy.io/docs/envoy/latest/intro/arch_overview/other_protocols/postgres). > > > > Paul > > > > On Mar 13, 2025, at 5:05 PM, Z A > > z11...@outlook.com<mailto:z11...@outlook.com> wrote: > > > > Thanks Felipe! > > ________________________________ > > From: Felipe Oliveira Carvalho > > felipe...@gmail.com<mailto:felipe...@gmail.com> > > Sent: Thursday, March 13, 2025 12:29 AM > > To: user@arrow.apache.org<mailto:user@arrow.apache.org> > > user@arrow.apache.org<mailto:user@arrow.apache.org> > > Subject: Re: api gateway with arrow flight grpc > > > > No, but if these are gRPC proxies they should work. > > > > On Wed, 12 Mar 2025 at 18:13 Z A > > z11...@outlook.com<mailto:z11...@outlook.com> wrote: > > > > Hi, > > I just subscribed to this mailing list, and apologize if this is a silly > > question. > > Has anyone ever done any integration of API Gateway (i.e. Kong, Tyk, > > KrakenD, etc.) with your own Arrow Flight Server? > > Thanks!
