added: cli option --dump-config prints loaded config and exits

This is most useful for automated tests for upcoming configuration
features. Can also be used for debugging.

test/io-tests/configs/defaults.config

@@ -0,0 +1,3 @@
+db-uri = "required"
+db-schema = "required"
+db-anon-role = "required"

test/io-tests/configs/expected/defaults.config

@@ -0,0 +1,24 @@
+db-uri = "required"
+db-schema = "required"
+db-anon-role = "required"
+db-pool = 10
+db-pool-timeout = 10
+db-extra-search-path = "public"
+db-channel = "pgrst"
+db-channel-enabled = false
+db-tx-end = "commit"
+db-prepared-statements = true
+server-host = "!4"
+server-port = 3000
+server-unix-socket = ""
+server-unix-socket-mode = "660"
+openapi-server-proxy-uri = ""
+jwt-secret = ""
+jwt-aud = ""
+secret-is-base64 = false
+role-claim-key = ".\"role\""
+max-rows = ""
+pre-request = ""
+root-spec = ""
+raw-media-types = ""
+log-level = "error"

test/io-tests/configs/expected/no-defaults.config

@@ -0,0 +1,26 @@
+db-uri = "tmp_db"
+db-schema = "multi,tenant,setup"
+db-anon-role = "root"
+db-pool = 1
+db-pool-timeout = 100
+db-extra-search-path = "public,test"
+db-channel = "postgrest"
+db-channel-enabled = true
+db-tx-end = "rollback-allow-override"
+db-prepared-statements = false
+server-host = "0.0.0.0"
+server-port = 80
+server-unix-socket = "/tmp/pgrst_io_test.sock"
+server-unix-socket-mode = "777"
+openapi-server-proxy-uri = "https://postgrest.org"
+jwt-secret = "c2VjdXJpdHl0aHJvdWdob2JzY3VyaXR5"
+jwt-aud = "https://postgrest.org"
+secret-is-base64 = true
+role-claim-key = ".\"user\"[0].\"real-role\""
+max-rows = 1000
+pre-request = "please_run_fast"
+root-spec = "openapi_v3"
+raw-media-types = "application/vnd.pgrst.config"
+log-level = "info"
+app.settings.test = "test"
+app.settings.test2 = "test"

test/io-tests/configs/no-defaults.config

@@ -0,0 +1,26 @@
+db-uri = "tmp_db"
+db-schema = "multi,   tenant,setup"
+db-anon-role = "root"
+db-pool = 1
+db-pool-timeout = 100
+db-extra-search-path = "public, test"
+db-channel = "postgrest"
+db-channel-enabled = true
+db-tx-end = "rollback-allow-override"
+db-prepared-statements = false
+server-host = "0.0.0.0"
+server-port = 80
+server-unix-socket = "/tmp/pgrst_io_test.sock"
+server-unix-socket-mode = "777"
+openapi-server-proxy-uri = "https://postgrest.org"
+jwt-secret = "c2VjdXJpdHl0aHJvdWdob2JzY3VyaXR5"
+jwt-aud = "https://postgrest.org"
+secret-is-base64 = true
+role-claim-key = ".user[0].\"real-role\""
+max-rows = 1000
+pre-request = "please_run_fast"
+root-spec = "openapi_v3"
+raw-media-types = "application/vnd.pgrst.config"
+log-level = "info"
+app.settings.test = "test"
+app.settings.test2 = "test"