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✨ feat(envoy-proxy): Enable access logging for HTTP requests #68

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merged 2 commits into from
Nov 23, 2023
Merged

✨ feat(envoy-proxy): Enable access logging for HTTP requests #68

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79446f3
✨ feat(envoy-proxy): Enable access logging for HTTP requests
olivier97 Nov 14, 2023
ea1306b
✨ feat(envoy-proxy): Log HTTP request payloads
olivier97 Nov 14, 2023
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22 changes: 22 additions & 0 deletions src/envoy-proxy/config/envoy-config.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -38,7 +38,29 @@ static_resources:
- name: envoy.access_loggers.stdout
typed_config:
"@type": type.googleapis.com/envoy.extensions.access_loggers.stream.v3.StdoutAccessLog
log_format:
json_format:
content_type: "%REQ(Content-Type)%"
downstream_remote_address: "%DOWNSTREAM_REMOTE_ADDRESS%"
hostname: "%HOSTNAME%"
message: "%LOCAL_REPLY_BODY%"
original_path: "%REQ(X-ENVOY-ORIGINAL-PATH?:PATH)%"
response_code: "%RESPONSE_CODE%"
response_code_details: "%RESPONSE_CODE_DETAILS%"
timestamp: "%START_TIME%"
upstream_remote_address: "%UPSTREAM_REMOTE_ADDRESS%"
user_agent: "%REQ(User-Agent)%"
payload: "%DYNAMIC_METADATA(envoy.filters.http.lua.request-filter:payload)%"
http_filters:
- name: envoy.filters.http.lua
typed_config:
"@type": type.googleapis.com/envoy.extensions.filters.http.lua.v3.Lua
default_source_code:
inline_string: |
local request_logger = require("/etc/envoy/unguard/request-logger")
function envoy_on_request(request_handle)
request_logger.log_payload(request_handle)
end
- name: envoy.filters.http.router
typed_config:
"@type": type.googleapis.com/envoy.extensions.filters.http.router.v3.Router
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16 changes: 16 additions & 0 deletions src/envoy-proxy/config/request-logger.lua
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Original file line number Diff line number Diff line change
@@ -0,0 +1,16 @@
local request_logger = {}

function request_logger.log_payload(handle)
local payload = ""
for chunk in handle:bodyChunks() do
local chunk_length = chunk:length()
if (chunk_length > 0) then
payload = payload .. chunk:getBytes(0, chunk_length)
end
end
payload = tostring(payload)
handle:streamInfo():dynamicMetadata():set("envoy.filters.http.lua.request-filter", "payload", payload)
return payload
end

return request_logger
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