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fix and sync nginx configs #60

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5467b24
fix and sync nginx configs
gpchelkin Oct 25, 2023
9cc53ba
fix and sync nginx configs
gpchelkin Oct 25, 2023
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4 changes: 3 additions & 1 deletion README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -52,8 +52,9 @@ In order to transform from REST to gRPC completely, you need to use three of hoo
```lua
## 0. prepare proto file import_paths
init_by_lua_block {
-- Define global import paths
PROTOC_IMPORT_PATHS = {
"/usr/local/include"
"/usr/local/protoc/include"
}
}

Expand Down Expand Up @@ -102,6 +103,7 @@ server {
ngx.header["Content-Type"] = "application/json"
}

grpc_set_header TE trailers;
grpc_set_header Content-Type application/grpc;
grpc_pass localhost:9000;
}
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19 changes: 13 additions & 6 deletions example/gateway/conf/server.conf
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Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
lua_code_cache off;

## 0. prepare proto file import_paths
init_by_lua_block {
-- Define global import paths
PROTOC_IMPORT_PATHS = {
Expand All @@ -25,36 +26,42 @@ server {
}

location /rest {

## 1. Transform request from REST to gRPC
access_by_lua_block {
local proto = require("grpc-gateway.proto")
local gateway = require("grpc-gateway.request")
local grequest = require("grpc-gateway.request")
local p, err = proto.new("/etc/proto/helloworld.proto")
if err then
ngx.log(ngx.ERR, ("proto load error: %s"):format(err))
return
end
local req = gateway.new(p)
local req = grequest.new(p)
err = req:transform("helloworld.Greeter", "SayHello")
if err then
ngx.log(ngx.ERR, ("trasnform request error: %s"):format(err))
ngx.log(ngx.ERR, ("transform request error: %s"):format(err))
return
end
}

## 2. Transform response from gPRC to JSON
body_filter_by_lua_block {
local proto = require("grpc-gateway.proto")
local gateway = require("grpc-gateway.response")
local gresponse = require("grpc-gateway.response")
local p, err = proto.new("/etc/proto/helloworld.proto")
if err then
ngx.log(ngx.ERR, ("proto load error: %s"):format(err))
return
end
local resp = gateway.new(p)
local resp = gresponse.new(p)
err = resp:transform("helloworld.Greeter", "SayHello")
if err then
ngx.log(ngx.ERR, ("trasnform response error: %s"):format(err))
ngx.log(ngx.ERR, ("transform response error: %s"):format(err))
return
end
}

## 3. Swap response header to `Content-Type: application/json`
header_filter_by_lua_block {
ngx.header["Content-Type"] = "application/json"
}
Expand Down