Make command-line arguments namespaced and consistent

This changes the command-line args to use a dot-separated namespace
prefix to be consistent with common practices in other projects
and dependencies.

main.go

@@ -103,7 +103,7 @@ func parseFlags() *config {
 
 	pgprometheus.ParseFlags(&cfg.pgPrometheusConfig)
 
-	flag.DurationVar(&cfg.remoteTimeout, "send-timeout", 30*time.Second, "The timeout to use when sending samples to the remote storage.")
+	flag.DurationVar(&cfg.remoteTimeout, "adapter.send-timeout", 30*time.Second, "The timeout to use when sending samples to the remote storage.")
 	flag.StringVar(&cfg.listenAddr, "web.listen-address", ":9201", "Address to listen on for web endpoints.")
 	flag.StringVar(&cfg.telemetryPath, "web.telemetry-path", "/metrics", "Address to listen on for web endpoints.")
 	flag.StringVar(&cfg.logLevel, "log.level", "debug", "The log level to use [ \"error\", \"warn\", \"info\", \"debug\" ].")

postgresql/client.go

@@ -41,21 +41,21 @@ type Config struct {
 
 // ParseFlags parses the configuration flags specific to PostgreSQL and TimescaleDB
 func ParseFlags(cfg *Config) *Config {
-	flag.StringVar(&cfg.host, "pg-host", "localhost", "The PostgreSQL host")
-	flag.IntVar(&cfg.port, "pg-port", 5432, "The PostgreSQL port")
-	flag.StringVar(&cfg.user, "pg-user", "postgres", "The PostgreSQL user")
-	flag.StringVar(&cfg.password, "pg-password", "", "The PostgreSQL password")
-	flag.StringVar(&cfg.database, "pg-database", "postgres", "The PostgreSQL database")
-	flag.StringVar(&cfg.schema, "pg-schema", "", "The PostgreSQL schema")
-	flag.StringVar(&cfg.sslMode, "pg-ssl-mode", "disable", "The PostgreSQL connection ssl mode")
-	flag.StringVar(&cfg.table, "pg-table", "metrics", "The PostgreSQL table")
-	flag.StringVar(&cfg.copyTable, "pg-copy-table", "metrics_copy", "The PostgreSQL table")
-	flag.IntVar(&cfg.maxOpenConns, "pg-max-open-conns", 50, "The max number of open connections to the database")
-	flag.IntVar(&cfg.maxIdleConns, "pg-max-idle-conns", 10, "The max number of idle connections to the database")
-	flag.BoolVar(&cfg.pgPrometheusNormalize, "pg-prometheus-normalized-schema", true, "Insert metric samples into normalized schema")
-	flag.BoolVar(&cfg.pgPrometheusLogSamples, "pg-prometheus-log-samples", false, "Log raw samples to stdout")
-	flag.DurationVar(&cfg.pgPrometheusChunkInterval, "pg-prometheus-chunk-interval", time.Hour*12, "The size of a time-partition chunk in TimescaleDB")
-	flag.BoolVar(&cfg.useTimescaleDb, "pg-use-timescaledb", true, "Use timescaleDB")
+	flag.StringVar(&cfg.host, "pg.host", "localhost", "The PostgreSQL host")
+	flag.IntVar(&cfg.port, "pg.port", 5432, "The PostgreSQL port")
+	flag.StringVar(&cfg.user, "pg.user", "postgres", "The PostgreSQL user")
+	flag.StringVar(&cfg.password, "pg.password", "", "The PostgreSQL password")
+	flag.StringVar(&cfg.database, "pg.database", "postgres", "The PostgreSQL database")
+	flag.StringVar(&cfg.schema, "pg.schema", "", "The PostgreSQL schema")
+	flag.StringVar(&cfg.sslMode, "pg.ssl-mode", "disable", "The PostgreSQL connection ssl mode")
+	flag.StringVar(&cfg.table, "pg.table", "metrics", "The PostgreSQL table")
+	flag.StringVar(&cfg.copyTable, "pg.copy-table", "metrics_copy", "The PostgreSQL table")
+	flag.IntVar(&cfg.maxOpenConns, "pg.max-open-conns", 50, "The max number of open connections to the database")
+	flag.IntVar(&cfg.maxIdleConns, "pg.max-idle-conns", 10, "The max number of idle connections to the database")
+	flag.BoolVar(&cfg.pgPrometheusNormalize, "pg.prometheus-normalized-schema", true, "Insert metric samples into normalized schema")
+	flag.BoolVar(&cfg.pgPrometheusLogSamples, "pg.prometheus-log-samples", false, "Log raw samples to stdout")
+	flag.DurationVar(&cfg.pgPrometheusChunkInterval, "pg.prometheus-chunk-interval", time.Hour*12, "The size of a time-partition chunk in TimescaleDB")
+	flag.BoolVar(&cfg.useTimescaleDb, "pg.use-timescaledb", true, "Use timescaleDB")
 	return cfg
 }