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Implement spans exporting for ClickHouse storage
Signed-off-by: haanhvu <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,83 @@ | ||
| // Copyright (c) 2023 The Jaeger Authors. | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
|
|
||
| package clickhouse | ||
|
|
||
| import ( | ||
| "context" | ||
| "database/sql" | ||
| "errors" | ||
| "fmt" | ||
| "net/url" | ||
|
|
||
| "github.com/ClickHouse/clickhouse-go/v2" | ||
| ) | ||
|
|
||
| type Config struct { | ||
| Endpoint string `mapstructure:"endpoint"` | ||
| Username string `mapstructure:"username"` | ||
| Password string `mapstructure:"password"` | ||
| Database string `mapstructure:"database"` | ||
| SpansTableName string `mapstructure:"spans_table_name"` | ||
| //materialized views' names? | ||
| } | ||
|
|
||
| const ( | ||
| defaultDatabase = "default" | ||
| defaultUsername = "default" | ||
| defaultPassword = "" | ||
| ) | ||
|
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| func (cfg *Config) NewClient(ctx context.Context) (*sql.DB, error) { | ||
| if cfg.Endpoint == "" { | ||
| return nil, errors.New("no endpoints specified") | ||
| } | ||
|
|
||
| dsnURL, err := url.Parse(cfg.Endpoint) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
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| queryParams := dsnURL.Query() | ||
|
|
||
| if dsnURL.Scheme == "https" { | ||
| queryParams.Set("secure", "true") | ||
| } | ||
|
|
||
| if cfg.Database != "" { | ||
| dsnURL.Path = cfg.Database | ||
| } else { | ||
| dsnURL.Path = defaultDatabase | ||
| } | ||
|
|
||
| if cfg.Username != "" { | ||
| cfg.Username = defaultUsername | ||
| } | ||
|
|
||
| if cfg.Password != "" { | ||
| cfg.Password = defaultPassword | ||
| } | ||
|
|
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| dsnURL.User = url.UserPassword(cfg.Username, cfg.Password) | ||
|
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| dsnURL.RawQuery = queryParams.Encode() | ||
|
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| dsn := dsnURL.String() | ||
|
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| if _, err = clickhouse.ParseDSN(dsn); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| db, err := sql.Open("clickhouse", dsn) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| createDBquery := fmt.Sprintf("CREATE DATABASE IF NOT EXISTS %s", cfg.Database) | ||
| _, err = db.ExecContext(ctx, createDBquery) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return db, nil | ||
| } | ||
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