1 files changed, 123 insertions, 0 deletions
diff --git a/src/go/collectors/go.d.plugin/modules/clickhouse/clickhouse.go b/src/go/collectors/go.d.plugin/modules/clickhouse/clickhouse.go
new file mode 100644
index 000000000..21b7f1d3f
--- /dev/null
+++ b/src/go/collectors/go.d.plugin/modules/clickhouse/clickhouse.go
@@ -0,0 +1,123 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package clickhouse
+
+import (
+	_ "embed"
+	"errors"
+	"net/http"
+	"time"
+
+	"github.com/netdata/netdata/go/go.d.plugin/agent/module"
+	"github.com/netdata/netdata/go/go.d.plugin/pkg/web"
+)
+
+//go:embed "config_schema.json"
+var configSchema string
+
+func init() {
+	module.Register("clickhouse", module.Creator{
+		Create:          func() module.Module { return New() },
+		Config:          func() any { return &Config{} },
+		JobConfigSchema: configSchema,
+	})
+}
+
+func New() *ClickHouse {
+	return &ClickHouse{
+		Config: Config{
+			HTTP: web.HTTP{
+				Request: web.Request{
+					URL: "http://127.0.0.1:8123",
+				},
+				Client: web.Client{
+					Timeout: web.Duration(time.Second),
+				},
+			},
+		},
+		charts:       chCharts.Copy(),
+		seenDisks:    make(map[string]*seenDisk),
+		seenDbTables: make(map[string]*seenTable),
+	}
+}
+
+type Config struct {
+	UpdateEvery int `yaml:"update_every,omitempty" json:"update_every"`
+	web.HTTP    `yaml:",inline" json:""`
+}
+
+type (
+	ClickHouse struct {
+		module.Base
+		Config `yaml:",inline" json:""`
+
+		charts *module.Charts
+
+		httpClient *http.Client
+
+		seenDisks    map[string]*seenDisk
+		seenDbTables map[string]*seenTable
+	}
+	seenDisk  struct{ disk string }
+	seenTable struct{ db, table string }
+)
+
+func (c *ClickHouse) Configuration() any {
+	return c.Config
+}
+
+func (c *ClickHouse) Init() error {
+	if err := c.validateConfig(); err != nil {
+		c.Errorf("config validation: %v", err)
+		return err
+	}
+
+	httpClient, err := c.initHTTPClient()
+	if err != nil {
+		c.Errorf("init HTTP client: %v", err)
+		return err
+	}
+	c.httpClient = httpClient
+
+	c.Debugf("using URL %s", c.URL)
+	c.Debugf("using timeout: %s", c.Timeout)
+
+	return nil
+}
+
+func (c *ClickHouse) Check() error {
+	mx, err := c.collect()
+	if err != nil {
+		c.Error(err)
+		return err
+	}
+
+	if len(mx) == 0 {
+		return errors.New("no metrics collected")
+	}
+
+	return nil
+}
+
+func (c *ClickHouse) Charts() *module.Charts {
+	return c.charts
+}
+
+func (c *ClickHouse) Collect() map[string]int64 {
+	mx, err := c.collect()
+	if err != nil {
+		c.Error(err)
+	}
+
+	if len(mx) == 0 {
+		return nil
+	}
+
+	return mx
+}
+
+func (c *ClickHouse) Cleanup() {
+	if c.httpClient != nil {
+		c.httpClient.CloseIdleConnections()
+	}
+}