api-server

API Server

API Server manages Tricorder Agents, PromScale database, and Grafana backend.

It also supports the management Web UI for users to manage the data collection modules, and instruct API server to deploy one or more modules.

In the future, API Server will connect with Cloud Manager, serving as the interface of the logical component of individual K8s cluster, to export data collected in the local cluster to the Cloud storage.

Sqlite

Embeded in API Server to store eBPF+WASM modules' metadata and status information during their lifetime.

TODO(zhihui): The docs below needs revision.

Create tables

• code table

CREATE TABLE "code" (
  "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
  "name" TEXT,
  "ebpf" TEXT,
  "wasm" TEXT,
  "create_time" TEXT,
  "status" integer,
  "wasm_content" TEXT,
  "wasm_file_name" TEXT,
  "schema_name" TEXT,
  "schema_attr" TEXT,
  "panel" TEXT,
  "fn" TEXT
);

• datasource table, save create success grafana datasource

CREATE TABLE "datasource" (
  "id" INTEGER NOT NULL,
  "name" TEXT,
  "create_time" TEXT,
  "type" TEXT,
  "host" TEXT,
  "user" TEXT,
  "password" TEXT,
  "tables_name" TEXT,
  "uid" TEXT,
  "grafana_datasource_id" INTEGER,
  "database" TEXT,
  PRIMARY KEY ("id")
);

• ebpf table

CREATE TABLE "ebpf" (
  "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
  "code" TEXT,
  "event_size" TEXT,
  "perf_buffers" TEXT,
  "create_time" TEXT,
  "entry" TEXT,
  "return" TEXT,
  "code_id" INTEGER
);

• grafana_api table, save grafana api token

CREATE TABLE "grafana_api" (
  "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
  "name" TEXT,
  "create_time" TEXT,
  "api_key" TEXT,
  "auth_value" TEXT
);

• grafana_dashboard table, save grafana dashboard

CREATE TABLE "grafana_dashboard" (
  "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
  "name" TEXT,
  "create_time" TEXT,
  "uid" TEXT,
  "grafana_dashboard_id" INTEGER,
  "version" TEXT
);

• schema table, save postgresql table schema

CREATE TABLE "schema" (
  "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
  "name" TEXT,
  "create_time" TEXT,
  "uid" TEXT,
  "grafana_dashboard_id" INTEGER,
  "version" TEXT
);