chore: add user info in uwsgi request logs

Refs KER-367

Dockerfile

@@ -20,7 +20,9 @@ ENV PYTHONUNBUFFERED True
 
 # less & netcat-openbsd are there for in-container manual debugging
 # kerrokantasi needs gdal
-RUN apt-get update && apt-get install -y postgresql-client less netcat-openbsd gettext locales gdal-bin python3-gdal
+RUN apt-get update  \
+    && apt-get install -y postgresql-client less netcat-openbsd gettext locales gdal-bin python3-gdal  \
+    && uwsgi --build-plugin /app/deploy/escape_json.c
 
 # we need the Finnish locale built
 RUN sed -i 's/^# *\(fi_FI.UTF-8\)/\1/' /etc/locale.gen

deploy/escape_json.c

@@ -0,0 +1,42 @@
+/*
+  https://github.com/velebit-ai/uwsgi-json-logging-plugin/blob/4edb5cc59013b18f32658195b328afb2ac21b2d2/escape_json.c
+  uWSGI plugin that creates custom json-escaped logging variables.
+  build plugin with `uwsgi --build-plugin <filename.c>`
+  and use it with `uwsgi --plugin <filename_plugin.so> ...`
+*/
+#include <uwsgi.h>
+
+
+static ssize_t uwsgi_lf_json_uri(struct wsgi_request *wsgi_req, char **buf) {
+    long pos = offsetof(struct wsgi_request, uri);
+    long pos_len = offsetof(struct wsgi_request, uri_len);
+    char **var = (char **) (((char *) wsgi_req) + pos);
+    uint16_t *varlen = (uint16_t *) (((char *) wsgi_req) + pos_len);
+
+    char *e_json = uwsgi_malloc((*varlen * 2) + 1);
+    escape_json(*var, *varlen, e_json);
+    *buf = e_json;
+    return strlen(*buf);
+}
+
+static ssize_t uwsgi_lf_json_host(struct wsgi_request *wsgi_req, char **buf) {
+    long pos = offsetof(struct wsgi_request, host);
+    long pos_len = offsetof(struct wsgi_request, host_len);
+    char **var = (char **) (((char *) wsgi_req) + pos);
+    uint16_t *varlen = (uint16_t *) (((char *) wsgi_req) + pos_len);
+
+    char *e_json = uwsgi_malloc((*varlen * 2) + 1);
+    escape_json(*var, *varlen, e_json);
+    *buf = e_json;
+    return strlen(*buf);
+}
+
+static void register_logchunks() {
+        uwsgi_register_logchunk("json_uri", uwsgi_lf_json_uri, 1);
+        uwsgi_register_logchunk("json_host", uwsgi_lf_json_host, 1);
+}
+
+struct uwsgi_plugin escape_json_plugin = {
+        .name = "escape_json",
+        .on_load = register_logchunks,
+};

deploy/uwsgi.yml

@@ -20,3 +20,8 @@ uwsgi:
   ignore-sigpipe: true
   ignore-write-errors: true
   disable-write-exception: true
+
+  logger-req: stdio
+  remote_addr: "%(addr)", "x_forwarded_for":"%(var.HTTP_X_FORWARDED_FOR)", "request_id":"%(var.HTTP_X_REQUEST_ID)", "remote_user":"%(user)", "bytes_sent":%(size), "request_time":%(secs), "status":%(status), "host":"%(json_host)", "request_proto":"%(proto)", "path":"%(json_uri)", "request_length":%(cl), "http_referer":"%(referer)", "http_user_agent":"%(uagent)"
+  log-req-encoder: format {"time":"${strftime:%%Y:%%m:%%d %%H:%%M:%%S}", "source":"uwsgi-req", ${msg}}
+  log-req-encoder: nl