Port metering to new API, not tested. (#354)

- Port metering to new API
- Moved price list to configuration
- Added tg-set-token-costs and tg-show-token-costs utils.

trustgraph-cli/scripts/tg-show-token-costs

@@ -0,0 +1,79 @@
+#!/usr/bin/env python3
+
+"""
+Dumps out the current prompts
+"""
+
+import argparse
+import os
+from trustgraph.api import Api, ConfigKey
+import json
+import tabulate
+import textwrap
+
+tabulate.PRESERVE_WHITESPACE = True
+
+default_url = os.getenv("TRUSTGRAPH_URL", 'http://localhost:8088/')
+
+def show_config(url):
+
+    api = Api(url)
+
+    models = api.config_list("token-costs")
+
+    costs = []
+
+    def fmt(x):
+        return "{price:.3f}".format(price = 1000000 * x)
+
+    for model in models:
+
+        try:
+            values = json.loads(api.config_get([
+                ConfigKey(type="token-costs", key=model),
+            ])[0].value)
+            costs.append((
+                model,
+                fmt(values.get("input_price")),
+                fmt(values.get("output_price")),
+            ))
+        except:
+            costs.append((
+                model, "-", "-"
+            ))
+
+    print(tabulate.tabulate(
+        costs,
+        tablefmt = "pretty",
+        headers = ["model", "input, $/Mt", "output, $/Mt"],
+        colalign = ["left", "right", "right"],
+#        stralign = ["left", "decimal", "decimal"]
+    ))
+
+def main():
+
+    parser = argparse.ArgumentParser(
+        prog='tg-show-prompts',
+        description=__doc__,
+    )
+
+    parser.add_argument(
+        '-u', '--api-url',
+        default=default_url,
+        help=f'API URL (default: {default_url})',
+    )
+
+    args = parser.parse_args()
+
+    try:
+
+        show_config(
+            url=args.api_url,
+        )
+
+    except Exception as e:
+
+        print("Exception:", e, flush=True)
+
+main()
+