storage: implement postgres event query/count filter translation

config/config.exs

@@ -29,4 +29,6 @@ config :parrhesia,
 
 config :parrhesia, Parrhesia.Web.Endpoint, port: 4000
 
+config :parrhesia, ecto_repos: [Parrhesia.Repo]
+
 import_config "#{config_env()}.exs"

config/dev.exs

@@ -1,3 +1,25 @@
 import Config
 
 config :logger, :console, format: "[$level] $message\n"
+
+pg_host = System.get_env("PGHOST")
+
+repo_host_opts =
+  if is_binary(pg_host) and String.starts_with?(pg_host, "/") do
+    [socket_dir: pg_host]
+  else
+    [
+      hostname: pg_host || "localhost",
+      port: String.to_integer(System.get_env("PGPORT") || "5432")
+    ]
+  end
+
+config :parrhesia,
+       Parrhesia.Repo,
+       [
+         username: System.get_env("PGUSER") || System.get_env("USER") || "agent",
+         password: System.get_env("PGPASSWORD"),
+         database: System.get_env("PGDATABASE") || "parrhesia_dev",
+         show_sensitive_data_on_connection_error: true,
+         pool_size: 10
+       ] ++ repo_host_opts

config/prod.exs

@@ -1 +1,9 @@
 import Config
+
+database_url =
+  System.get_env("DATABASE_URL") ||
+    raise "environment variable DATABASE_URL is missing. Example: ecto://USER:PASS@HOST/DATABASE"
+
+config :parrhesia, Parrhesia.Repo,
+  url: database_url,
+  pool_size: String.to_integer(System.get_env("POOL_SIZE") || "10")

config/test.exs

@@ -5,3 +5,25 @@ config :logger, level: :warning
 config :parrhesia, Parrhesia.Web.Endpoint,
   port: 0,
   ip: {127, 0, 0, 1}
+
+pg_host = System.get_env("PGHOST")
+
+repo_host_opts =
+  if is_binary(pg_host) and String.starts_with?(pg_host, "/") do
+    [socket_dir: pg_host]
+  else
+    [
+      hostname: pg_host || "localhost",
+      port: String.to_integer(System.get_env("PGPORT") || "5432")
+    ]
+  end
+
+config :parrhesia,
+       Parrhesia.Repo,
+       [
+         username: System.get_env("PGUSER") || System.get_env("USER") || "agent",
+         password: System.get_env("PGPASSWORD"),
+         database: System.get_env("PGDATABASE") || "parrhesia_test",
+         pool: Ecto.Adapters.SQL.Sandbox,
+         pool_size: 10
+       ] ++ repo_host_opts