Add new health queries

src/fetch/GET.ts

@@ -3,21 +3,33 @@ import swaggerFavicon from "../../swagger/favicon.png";
 import swaggerHtml from "../../swagger/index.html";
 import { metrics } from "../prometheus.js";
 import { blocks } from "./blocks.js";
-import { NotFound, toFile, toJSON } from "./cors.js";
+import { NotFound, toFile, toJSON, toText } from "./cors.js";
 import { findLatestCursor } from "./cursor.js";
 import health from "./health.js";
 import { openapi } from "./openapi.js";
+import { cluster } from "./cluster.js";
 
 export default async function (req: Request) {
   const { pathname } = new URL(req.url);
 
-  if (pathname === "/") return toFile(file(swaggerHtml));
-  if (pathname === "/favicon.png") return toFile(file(swaggerFavicon));
-  if (pathname === "/health") return health();
-  if (pathname === "/metrics") return metrics();
-  if (pathname === "/openapi") return toJSON(await openapi());
-  if (pathname === "/blocks") return blocks();
-  if (pathname === "/cursor/latest") return findLatestCursor(req);
+  try {
+    if (pathname === "/") return toFile(file(swaggerHtml));
+    if (pathname === "/favicon.png") return toFile(file(swaggerFavicon));
+
+    // queries
+    if (pathname === "/cursor/latest") return findLatestCursor(req);
+
+    // health
+    if (pathname === "/blocks") return toJSON(await blocks(req));
+    if (pathname === "/cluster") return toJSON(await cluster());
+    if (pathname === "/health") return health();
+    if (pathname === "/metrics") return metrics();
+
+    // docs
+    if (pathname === "/openapi") return toJSON(await openapi());
+  } catch (e) {
+    return toText(String(e), 500);
+  }
 
   return NotFound;
 }

src/fetch/POST.ts

@@ -12,6 +12,7 @@ import { query } from "./query.js";
 export default async function (req: Request) {
   const { pathname } = new URL(req.url);
 
+  // queries
   if (pathname === "/query") return query(req);
   if (pathname === "/hash") return hash(req);
 

src/fetch/blocks.sql

@@ -0,0 +1,10 @@
+SELECT
+    chain,
+    COUNT() AS count,
+    COUNTDISTINCT(block_number) AS count_distinct,
+    MAX(block_number) AS max,
+    MIN(block_number) AS min,
+    max - min + 1 AS delta,
+    delta - count_distinct AS missing
+FROM blocks
+GROUP BY chain

src/fetch/blocks.ts

@@ -1,16 +1,8 @@
 import { z } from "zod";
 import client from "../clickhouse/createClient.js";
-import { logger } from "../logger.js";
-import { InternalServerError, toJSON } from "./cors.js";
-
-type BlockViewType = Array<{
-  count: string;
-  count_distinct: string;
-  max: number;
-  min: number;
-}>;
 
 export const BlockResponseSchema = z.object({
+  chain: z.string(),
   count: z.number(),
   distinctCount: z.number(),
   min: z.number(),
@@ -20,32 +12,21 @@ export const BlockResponseSchema = z.object({
 });
 export type BlockResponseSchema = z.infer<typeof BlockResponseSchema>;
 
-export async function blocks(): Promise<Response> {
-  const query = `
-    SELECT
-        COUNT() AS count,
-        COUNTDISTINCT(block_number) AS count_distinct,
-        MAX(block_number) AS max,
-        MIN(block_number) AS min
-    FROM blocks
-    `;
-
-  try {
-    const response = await client.query({ query, format: "JSONEachRow" });
-    const data = await response.json<BlockViewType>();
-
-    const distinctCount = parseInt(data[0].count_distinct);
-    const max = data[0].max;
-    const min = data[0].min;
-    const delta = max - min;
-    const missing = max - min - distinctCount;
-    const count = parseInt(data[0].count);
+export function getChain(req: Request, required = true) {
+  const url = new URL(req.url);
+  const chain = url.searchParams.get("chain");
 
-    const dto: BlockResponseSchema = { max, min, distinctCount, delta, missing, count };
-
-    return toJSON(dto);
-  } catch (err) {
-    logger.error('[blocks]', err);
-    return InternalServerError;
+  if (required && !chain) {
+    throw Error("Missing parameter: chain");
   }
+  return chain;
+}
+
+export async function blocks(req: Request) {
+  const query = await Bun.file(import.meta.dirname + "/blocks.sql").text()
+  const chain = getChain(req, false);
+  const response = await client.query({ query, format: "JSONEachRow" });
+  let data = await response.json() as BlockResponseSchema[];
+  if ( chain ) data = data.filter((row) => row.chain === chain);
+  return data;
 }

src/fetch/cluster.sql

@@ -0,0 +1,14 @@
+SELECT
+    table,
+    sum(rows) AS rows,
+    max(modification_time) AS latest_modification,
+    formatReadableSize(sum(bytes)) AS data_size,
+    formatReadableSize(sum(primary_key_bytes_in_memory)) AS primary_keys_size,
+    any(engine) AS engine,
+    sum(bytes) AS bytes_size
+FROM clusterAllReplicas(default, system.parts)
+WHERE active
+GROUP BY
+    database,
+    table
+ORDER BY bytes_size DESC

src/fetch/cluster.ts

@@ -0,0 +1,18 @@
+import { z } from "zod";
+import client from "../clickhouse/createClient.js";
+
+export const ClusterSchema = z.object({
+  count: z.number(),
+  distinctCount: z.number(),
+  min: z.number(),
+  max: z.number(),
+  delta: z.number(),
+  missing: z.number(),
+});
+export type ClusterSchema = z.infer<typeof ClusterSchema>;
+
+export async function cluster() {
+  const query = await Bun.file(import.meta.dirname + "/cluster.sql").text()
+  const response = await client.query({ query, format: "JSONEachRow" });
+  return response.json();
+}

src/fetch/openapi.ts

@@ -1,20 +1,21 @@
 import pkg from "../../package.json" assert { type: "json" };
 
 import { LicenseObject } from "openapi3-ts/oas30";
-import { OpenApiBuilder, ResponsesObject, SchemaObject } from "openapi3-ts/oas31";
+import { OpenApiBuilder, ParameterObject, ResponsesObject, SchemaObject } from "openapi3-ts/oas31";
 import { z } from "zod";
 import * as ztjs from "zod-to-json-schema";
 import { store } from "../clickhouse/stores.js";
 import { BodySchema } from "../schemas.js";
 import { BlockResponseSchema } from "./blocks.js";
+import { ClusterSchema } from "./cluster.js";
 
 const zodToJsonSchema = (...params: Parameters<(typeof ztjs)["zodToJsonSchema"]>) =>
   ztjs.zodToJsonSchema(...params) as SchemaObject;
 
 const TAGS = {
+  QUERIES: "Queries",
   USAGE: "Usage",
   MAINTENANCE: "Maintenance",
-  QUERIES: "Queries",
   HEALTH: "Health",
   DOCS: "Documentation",
 } as const;
@@ -36,6 +37,24 @@ const PUT_RESPONSES: ResponsesObject = {
 
 const ExecuteSchemaResponse = z.object({ success: z.literal("OK"), schema: z.string() });
 
+async function paramChain(required = true): Promise<ParameterObject> {
+  return {
+    name: "chain",
+    in: "query",
+    required,
+    schema: { enum: await store.chains },
+  };
+}
+
+async function paramModuleHash(required = true): Promise<ParameterObject> {
+  return {
+    name: "module_hash",
+    in: "query",
+    required: true,
+    schema: { enum: await store.moduleHashes },
+  };
+}
+
 export async function openapi() {
   return new OpenApiBuilder()
     .addInfo({
@@ -205,13 +224,8 @@ export async function openapi() {
         tags: [TAGS.QUERIES],
         summary: "Finds the latest cursor for a given chain and table",
         parameters: [
-          { name: "chain", in: "query", required: true, schema: { enum: await store.chains } },
-          {
-            name: "module_hash",
-            in: "query",
-            required: true,
-            schema: { enum: await store.moduleHashes },
-          },
+          await paramChain(true),
+          await paramModuleHash(true)
         ],
         responses: {
           200: {
@@ -233,8 +247,11 @@ export async function openapi() {
     })
     .addPath("/blocks", {
       get: {
-        tags: [TAGS.QUERIES],
+        tags: [TAGS.HEALTH],
         summary: "Gives a summary of known blocks, including min, max and unique block numbers",
+        parameters: [
+          await paramChain(false)
+        ],
         responses: {
           200: {
             description: "Block number summary",
@@ -248,6 +265,23 @@ export async function openapi() {
         },
       },
     })
+    .addPath("/cluster", {
+      get: {
+        tags: [TAGS.HEALTH],
+        summary: "Global overview of your cluster",
+        responses: {
+          200: {
+            description: "Global overview of your cluster",
+            content: {
+              "application/json": {
+                schema: zodToJsonSchema(ClusterSchema),
+              },
+            },
+          },
+          500: { description: "Internal server errror" },
+        },
+      },
+    })
     .addPath("/query", {
       post: {
         tags: [TAGS.QUERIES],