Coralogix processor first PR (open-telemetry#33458)

**Description:** <Describe what has changed.>
Adding a feature - Adding a feature to create templates (blueprints)
from sql queries.
Currently specifically for postgresql and mysql queries.

**Link to tracking Issue:** open-telemetry#33090

**Testing:** <Describe what testing was performed and which tests were
added.>
currently no tests, will be added in next PR

**Documentation:** <Describe the documentation added.>
Added documentation for possible configuration and the usecase of the
processor

---------

Co-authored-by: Curtis Robert <crobert@splunk.com>
Co-authored-by: Antoine Toulme <atoulme@splunk.com>

.chloggen/coralogix-proccesor-first-pr.yaml

@@ -0,0 +1,27 @@
+# Use this changelog template to create an entry for release notes.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: new_component
+
+# The name of the component, or a single word describing the area of concern, (e.g. filelogreceiver)
+component: coralogixprocessor
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: creating new component for coralogix features
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+issues: [33090]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:
+
+# If your change doesn't affect end users or the exported elements of any package,
+# you should instead start your pull request title with [chore] or use the "Skip Changelog" label.
+# Optional: The change log or logs in which this entry should be included.
+# e.g. '[user]' or '[user, api]'
+# Include 'user' if the change is relevant to end users.
+# Include 'api' if there is a change to a library API.
+# Default: '[user]'
+change_logs: []

.github/CODEOWNERS

@@ -166,6 +166,7 @@ pkg/winperfcounters/                                                @open-teleme
 
 processor/attributesprocessor/                                      @open-telemetry/collector-contrib-approvers @boostchicken
 processor/cumulativetodeltaprocessor/                               @open-telemetry/collector-contrib-approvers @TylerHelmuth
+processor/coralogixprocessor/                                       @open-telemetry/collector-contrib-approvers @galrose @crobert-1 @eyalatz @roycald245
 processor/deltatocumulativeprocessor/                               @open-telemetry/collector-contrib-approvers @sh0rez @RichieSams @jpkrohling
 processor/deltatorateprocessor/                                     @open-telemetry/collector-contrib-approvers @Aneurysm9
 processor/filterprocessor/                                          @open-telemetry/collector-contrib-approvers @TylerHelmuth @boostchicken

.github/ISSUE_TEMPLATE/bug_report.yaml

@@ -160,6 +160,7 @@ body:
       - pkg/translator/zipkin
       - pkg/winperfcounters
       - processor/attributes
+      - processor/coralogix
       - processor/cumulativetodelta
       - processor/deltatocumulative
       - processor/deltatorate

.github/ISSUE_TEMPLATE/feature_request.yaml

@@ -154,6 +154,7 @@ body:
       - pkg/translator/zipkin
       - pkg/winperfcounters
       - processor/attributes
+      - processor/coralogix
       - processor/cumulativetodelta
       - processor/deltatocumulative
       - processor/deltatorate

.github/ISSUE_TEMPLATE/other.yaml

@@ -154,6 +154,7 @@ body:
       - pkg/translator/zipkin
       - pkg/winperfcounters
       - processor/attributes
+      - processor/coralogix
       - processor/cumulativetodelta
       - processor/deltatocumulative
       - processor/deltatorate

.github/ISSUE_TEMPLATE/unmaintained.yaml

@@ -159,6 +159,7 @@ body:
       - pkg/translator/zipkin
       - pkg/winperfcounters
       - processor/attributes
+      - processor/coralogix
       - processor/cumulativetodelta
       - processor/deltatocumulative
       - processor/deltatorate

cmd/githubgen/allowlist.txt

@@ -16,6 +16,7 @@ rlankfo
 swar8080
 zpzhuSplunk
 thmshmm
+galrose
 cemdk
 tomasmota
 m1rp

processor/coralogixprocessor/Makefile

@@ -0,0 +1 @@
+include ../../Makefile.Common

processor/coralogixprocessor/README.md

@@ -0,0 +1,88 @@
+# Coralogix Processor
+
+<!-- status autogenerated section -->
+| Status        |           |
+| ------------- |-----------|
+| Stability     | [development]: traces   |
+| Distributions | [] |
+| Warnings      | [Statefulness](#warnings) |
+| Issues        | [![Open issues](https://img.shields.io/github/issues-search/open-telemetry/opentelemetry-collector-contrib?query=is%3Aissue%20is%3Aopen%20label%3Aprocessor%2Fcoralogix%20&label=open&color=orange&logo=opentelemetry)](https://github.com/open-telemetry/opentelemetry-collector-contrib/issues?q=is%3Aopen+is%3Aissue+label%3Aprocessor%2Fcoralogix) [![Closed issues](https://img.shields.io/github/issues-search/open-telemetry/opentelemetry-collector-contrib?query=is%3Aissue%20is%3Aclosed%20label%3Aprocessor%2Fcoralogix%20&label=closed&color=blue&logo=opentelemetry)](https://github.com/open-telemetry/opentelemetry-collector-contrib/issues?q=is%3Aclosed+is%3Aissue+label%3Aprocessor%2Fcoralogix) |
+| [Code Owners](https://github.com/open-telemetry/opentelemetry-collector-contrib/blob/main/CONTRIBUTING.md#becoming-a-code-owner)    | [@crobert-1](https://www.github.com/crobert-1), [@galrose](https://www.github.com/galrose), [@eyalatz](https://www.github.com/eyalatz), [@roycald245](https://www.github.com/roycald245) |
+
+[development]: https://github.com/open-telemetry/opentelemetry-collector#development
+<!-- end autogenerated section -->
+
+## Description
+
+The Coralogix processor adds attributes to spans that enable features in Coralogix.
+
+## Features
+
+### DB Statement Blueprints
+
+This feature enables the processor to create blueprints from SQL queries, this means replacing any variables with `?`.
+The blueprint is also hashed to be able to be used with the spanmetrics connector.
+Long queries can be an issue when being stored in certain metric stores.
+Blueprints alleviate this problem by using the hash as the identifying dimension on the metric, which enables
+users to query metrics by blueprints.
+
+The added attributes are `db.statement.blueprint` and `db.statement.blueprint.id`.
+
+* `db.statement.blueprint` contains the blueprinted version of the statement, we require them to be sent to Coralogix to
+  display your blueprinted statement
+* `db.statement.blueprint.id` contains a hash of the statement, this way we can add it as a dimension in the spanmetrics
+  connector and use it to query your blueprints.
+* `sampling.priority` if enabled contains the value 100 for new blueprints, further explanation below.
+
+#### Sampling
+
+If sampling is enabled then it stores the found blueprints in an in-memory cache to be able to send only new blueprints
+that haven't been seen yet.
+This only adds an attribute to the span named `sampling.priority`, if the blueprint is new then the sampling priority
+will be `100`.
+
+Using this key it's possible to use either
+the [Tail Sampler](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/processor/tailsamplingprocessor)
+or
+the [Probabilistic Sampler](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/processor/probabilisticsamplerprocessor)
+to only send new blueprints to Coralogix.
+If sampling is not enabled it won't cache anything and the `sampling.priority` attribute won't be added.
+
+The cache is limited by the `max_cache_size_mib` configuration, if the cache is full it will remove the oldest entries
+to make space for new ones.
+The cache stores hashes of the queries, each hash is 8 bytes, so the number of maximum cache entries is calculated
+by `max_cache_size_mib * 1024 * 1024 / 8`.
+
+## Config
+
+* `db_statement_blueprints`
+    * `sampling`:
+        * `enabled`: (default: `false`) If enabled, adds the attribute `sampling.priority` with a value of `100` to spans with new
+          blueprints.
+          Refer to the [Sampling section](#sampling) for more information.
+        * `max_cache_size_mib` (default: `1024`) The size of the cache in mebibytes to store seen blueprints hashes.
+
+### Basic Setup
+
+This setup is without sampling meaning no `sampling.priority` attribute will be added to spans.
+The cache will be disabled.
+
+```yaml
+processors:
+  coralogix:
+    db_statement_blueprints:
+```
+
+### With Sampling Config
+
+This setup will enable the cache to store seen blueprints and add the `sampling.priority` attribute to spans with new
+blueprints.
+
+```yaml
+processors:
+  coralogix:
+    db_statement_blueprints:
+      sampling:
+        enabled: true
+        max_cache_size_mib: 1024 #1GiB
+  ```

processor/coralogixprocessor/config.go

@@ -0,0 +1,29 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package coralogixprocessor // import "github.com/open-telemetry/opentelemetry-collector-contrib/processor/coralogixprocessor"
+
+import "fmt"
+
+type samplingConfig struct {
+	enabled         bool  `mapstructure:"enabled"`
+	maxCacheSizeMib int64 `mapstructure:"max_cache_size_mib"`
+}
+
+type databaseBlueprintsConfig struct {
+	sampling samplingConfig `mapstructure:"sampling"`
+}
+
+type Config struct {
+	databaseBlueprintsConfig `mapstructure:"database_blueprints_config"`
+}
+
+func (c *Config) Validate() error {
+	if c.databaseBlueprintsConfig.sampling.enabled && c.databaseBlueprintsConfig.sampling.maxCacheSizeMib <= 0 {
+		return fmt.Errorf("max_cache_size_mib must be a positive integer")
+	}
+	if c.databaseBlueprintsConfig.sampling.enabled && c.databaseBlueprintsConfig.sampling.maxCacheSizeMib != 0 {
+		return fmt.Errorf("max_cache_size_mib can only be defined when sampling is enabled")
+	}
+	return nil
+}

processor/coralogixprocessor/doc.go

@@ -0,0 +1,6 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+//go:generate mdatagen metadata.yaml
+
+package coralogixprocessor // import "github.com/open-telemetry/opentelemetry-collector-contrib/processor/coralogixprocessor"

processor/coralogixprocessor/factory.go

@@ -0,0 +1,45 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package coralogixprocessor // import "github.com/open-telemetry/opentelemetry-collector-contrib/processor/coralogixprocessor"
+
+import (
+	"context"
+
+	"go.opentelemetry.io/collector/component"
+	"go.opentelemetry.io/collector/consumer"
+	"go.opentelemetry.io/collector/processor"
+
+	"github.com/open-telemetry/opentelemetry-collector-contrib/processor/coralogixprocessor/internal/metadata"
+)
+
+// NewFactory returns a new factory for the Span processor.
+func NewFactory() processor.Factory {
+	return processor.NewFactory(
+		metadata.Type,
+		createDefaultConfig,
+		processor.WithTraces(createTracesProcessor, component.StabilityLevelDevelopment))
+}
+
+func createDefaultConfig() component.Config {
+	return &Config{}
+}
+
+func createTracesProcessor(
+	ctx context.Context,
+	params processor.Settings,
+	baseCfg component.Config,
+	nextConsumer consumer.Traces,
+) (processor.Traces, error) {
+	coralogixCfg := baseCfg.(*Config)
+
+	coralogixProcessor, err := newCoralogixProcessor(ctx,
+		params,
+		coralogixCfg,
+		nextConsumer)
+	if err != nil {
+		return nil, err
+	}
+
+	return coralogixProcessor, nil
+}