[extension/solarwindsapmsettingsextension] Added remaining implementa…

…tion of solarwindsapmsettingsextension (open-telemetry#33315)

**Description:** <Describe what has changed.>
<!--Ex. Fixing a bug - Describe the bug and how this fixes the issue.
Ex. Adding a feature - Explain what this achieves.-->
- Added logic for `refresh` function

**Link to tracking Issue:** <Issue number if applicable>

[27668](open-telemetry#27668)

**Testing:** <Describe what testing was performed and which tests were
added.>
Manually tested against test server
```
extensions:
  solarwindsapmsettings:
    endpoint: "apm-testcollector.click:443"
    key: "any:any"

service:
  extensions: [solarwindsapmsettings]
```

**Documentation:** <Describe the documentation added.>
- Updated README to remove the support of
`/tmp/solarwinds-apm-settings-raw` file

---------

Co-authored-by: Antoine Toulme <antoine@toulme.name>

.chloggen/feature_solarwindsapmsettingsetension-impl-2.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: enhancement
+
+# The name of the component, or a single word describing the area of concern, (e.g. filelogreceiver)
+component: solarwindsapmsettingsextension
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Added logic for refresh function
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+issues: [27668]
+
+# (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: []

extension/solarwindsapmsettingsextension/README.md

@@ -12,7 +12,7 @@
 <!-- end autogenerated section -->
 
 ## Overview
-The Solarwinds APM Settings extension gets Solarwinds APM specific settings from Solarwinds APM collector and `/tmp/solarwinds-apm-settings.json` & `/tmp/solarwinds-apm-settings-raw` periodically.
+The Solarwinds APM Settings extension gets Solarwinds APM specific settings from Solarwinds APM collector and `/tmp/solarwinds-apm-settings.json` periodically.
 
 ## Configuration
 

extension/solarwindsapmsettingsextension/config.go

@@ -10,12 +10,13 @@ import (
 	"time"
 
 	"go.opentelemetry.io/collector/component"
+	"go.opentelemetry.io/collector/config/configgrpc"
 )
 
 type Config struct {
-	Endpoint string        `mapstructure:"endpoint"`
-	Key      string        `mapstructure:"key"`
-	Interval time.Duration `mapstructure:"interval"`
+	ClientConfig configgrpc.ClientConfig `mapstructure:",squash"`
+	Key          string                  `mapstructure:"key"`
+	Interval     time.Duration           `mapstructure:"interval"`
 }
 
 const (
@@ -27,17 +28,19 @@ const (
 
 func createDefaultConfig() component.Config {
 	return &Config{
-		Endpoint: DefaultEndpoint,
+		ClientConfig: configgrpc.ClientConfig{
+			Endpoint: DefaultEndpoint,
+		},
 		Interval: DefaultInterval,
 	}
 }
 
 func (cfg *Config) Validate() error {
 	// Endpoint
-	matched, _ := regexp.MatchString(`apm.collector.[a-z]{2,3}-[0-9]{2}.[a-z\-]*.solarwinds.com:443`, cfg.Endpoint)
+	matched, _ := regexp.MatchString(`apm.collector.[a-z]{2,3}-[0-9]{2}.[a-z\-]*.solarwinds.com:443`, cfg.ClientConfig.Endpoint)
 	if !matched {
 		// Replaced by the default
-		cfg.Endpoint = DefaultEndpoint
+		cfg.ClientConfig.Endpoint = DefaultEndpoint
 	}
 	// Key
 	keyArr := strings.Split(cfg.Key, ":")

extension/solarwindsapmsettingsextension/config_test.go

@@ -12,6 +12,7 @@ import (
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 	"go.opentelemetry.io/collector/component"
+	"go.opentelemetry.io/collector/config/configgrpc"
 	"go.opentelemetry.io/collector/confmap/confmaptest"
 
 	"github.com/open-telemetry/opentelemetry-collector-contrib/extension/solarwindsapmsettingsextension/internal/metadata"
@@ -31,25 +32,231 @@ func TestLoadConfig(t *testing.T) {
 		{
 			id: component.NewIDWithName(metadata.Type, "1"),
 			expected: &Config{
-				Endpoint: "apm.collector.apj-01.cloud.solarwinds.com:443",
+				ClientConfig: configgrpc.ClientConfig{
+					Endpoint: "apm.collector.na-01.cloud.solarwinds.com:443",
+				},
 				Key:      "something:name",
 				Interval: time.Duration(10) * time.Second,
 			},
 		},
 		{
 			id: component.NewIDWithName(metadata.Type, "2"),
 			expected: &Config{
-				Endpoint: "apm.collector.na-01.cloud.solarwinds.com:443",
-				Key:      "something",
-				Interval: time.Duration(5) * time.Second,
+				ClientConfig: configgrpc.ClientConfig{
+					Endpoint: "apm.collector.na-02.cloud.solarwinds.com:443",
+				},
+				Key:      "something:name",
+				Interval: time.Duration(10) * time.Second,
 			},
 		},
 		{
 			id: component.NewIDWithName(metadata.Type, "3"),
 			expected: &Config{
-				Endpoint: "apm.collector.na-01.cloud.solarwinds.com:443",
+				ClientConfig: configgrpc.ClientConfig{
+					Endpoint: "apm.collector.eu-01.cloud.solarwinds.com:443",
+				},
+				Key:      "something:name",
+				Interval: time.Duration(10) * time.Second,
+			},
+		},
+		{
+			id: component.NewIDWithName(metadata.Type, "4"),
+			expected: &Config{
+				ClientConfig: configgrpc.ClientConfig{
+					Endpoint: "apm.collector.apj-01.cloud.solarwinds.com:443",
+				},
+				Key:      "something:name",
+				Interval: time.Duration(10) * time.Second,
+			},
+		},
+		{
+			id: component.NewIDWithName(metadata.Type, "5"),
+			expected: &Config{
+				ClientConfig: configgrpc.ClientConfig{
+					Endpoint: "apm.collector.na-01.st-ssp.solarwinds.com:443",
+				},
+				Key:      "something:name",
+				Interval: time.Duration(10) * time.Second,
+			},
+		},
+		{
+			id: component.NewIDWithName(metadata.Type, "6"),
+			expected: &Config{
+				ClientConfig: configgrpc.ClientConfig{
+					Endpoint: "apm.collector.na-01.dev-ssp.solarwinds.com:443",
+				},
+				Key:      "something:name",
+				Interval: time.Duration(10) * time.Second,
+			},
+		},
+		{
+			id: component.NewIDWithName(metadata.Type, "7"),
+			expected: &Config{
+				ClientConfig: configgrpc.ClientConfig{
+					Endpoint: DefaultEndpoint,
+				},
+				Key:      "something:name",
+				Interval: time.Duration(10) * time.Second,
+			},
+		},
+		{
+			id: component.NewIDWithName(metadata.Type, "8"),
+			expected: &Config{
+				ClientConfig: configgrpc.ClientConfig{
+					Endpoint: DefaultEndpoint,
+				},
+				Key:      "something:name",
+				Interval: time.Duration(10) * time.Second,
+			},
+		},
+		{
+			id: component.NewIDWithName(metadata.Type, "9"),
+			expected: &Config{
+				ClientConfig: configgrpc.ClientConfig{
+					Endpoint: DefaultEndpoint,
+				},
+				Key:      "something:name",
+				Interval: time.Duration(10) * time.Second,
+			},
+		},
+		{
+			id: component.NewIDWithName(metadata.Type, "10"),
+			expected: &Config{
+				ClientConfig: configgrpc.ClientConfig{
+					Endpoint: DefaultEndpoint,
+				},
+				Key:      "something:name",
+				Interval: time.Duration(10) * time.Second,
+			},
+		},
+		{
+			id: component.NewIDWithName(metadata.Type, "11"),
+			expected: &Config{
+				ClientConfig: configgrpc.ClientConfig{
+					Endpoint: DefaultEndpoint,
+				},
+				Key:      "something:name",
+				Interval: time.Duration(10) * time.Second,
+			},
+		},
+		{
+			id: component.NewIDWithName(metadata.Type, "12"),
+			expected: &Config{
+				ClientConfig: configgrpc.ClientConfig{
+					Endpoint: DefaultEndpoint,
+				},
 				Key:      "something:name",
-				Interval: time.Duration(60) * time.Second,
+				Interval: time.Duration(10) * time.Second,
+			},
+		},
+		{
+			id: component.NewIDWithName(metadata.Type, "13"),
+			expected: &Config{
+				ClientConfig: configgrpc.ClientConfig{
+					Endpoint: DefaultEndpoint,
+				},
+				Key:      "something:name",
+				Interval: time.Duration(10) * time.Second,
+			},
+		},
+		{
+			id: component.NewIDWithName(metadata.Type, "14"),
+			expected: &Config{
+				ClientConfig: configgrpc.ClientConfig{
+					Endpoint: DefaultEndpoint,
+				},
+				Key:      "something:name",
+				Interval: time.Duration(10) * time.Second,
+			},
+		},
+		{
+			id: component.NewIDWithName(metadata.Type, "15"),
+			expected: &Config{
+				ClientConfig: configgrpc.ClientConfig{
+					Endpoint: DefaultEndpoint,
+				},
+				Key:      "something:name",
+				Interval: time.Duration(10) * time.Second,
+			},
+		},
+		{
+			id: component.NewIDWithName(metadata.Type, "16"),
+			expected: &Config{
+				ClientConfig: configgrpc.ClientConfig{
+					Endpoint: DefaultEndpoint,
+				},
+				Key:      "",
+				Interval: time.Duration(10) * time.Second,
+			},
+		},
+		{
+			id: component.NewIDWithName(metadata.Type, "17"),
+			expected: &Config{
+				ClientConfig: configgrpc.ClientConfig{
+					Endpoint: DefaultEndpoint,
+				},
+				Key:      ":",
+				Interval: time.Duration(10) * time.Second,
+			},
+		},
+		{
+			id: component.NewIDWithName(metadata.Type, "18"),
+			expected: &Config{
+				ClientConfig: configgrpc.ClientConfig{
+					Endpoint: DefaultEndpoint,
+				},
+				Key:      "::",
+				Interval: time.Duration(10) * time.Second,
+			},
+		},
+		{
+			id: component.NewIDWithName(metadata.Type, "19"),
+			expected: &Config{
+				ClientConfig: configgrpc.ClientConfig{
+					Endpoint: DefaultEndpoint,
+				},
+				Key:      ":name",
+				Interval: time.Duration(10) * time.Second,
+			},
+		},
+		{
+			id: component.NewIDWithName(metadata.Type, "20"),
+			expected: &Config{
+				ClientConfig: configgrpc.ClientConfig{
+					Endpoint: DefaultEndpoint,
+				},
+				Key:      "token:",
+				Interval: time.Duration(10) * time.Second,
+			},
+		},
+		{
+			id: component.NewIDWithName(metadata.Type, "21"),
+			expected: &Config{
+				ClientConfig: configgrpc.ClientConfig{
+					Endpoint: DefaultEndpoint,
+				},
+				Key:      "token:name",
+				Interval: MinimumInterval,
+			},
+		},
+		{
+			id: component.NewIDWithName(metadata.Type, "22"),
+			expected: &Config{
+				ClientConfig: configgrpc.ClientConfig{
+					Endpoint: DefaultEndpoint,
+				},
+				Key:      "token:name",
+				Interval: MaximumInterval,
+			},
+		},
+		{
+			id: component.NewIDWithName(metadata.Type, "23"),
+			expected: &Config{
+				ClientConfig: configgrpc.ClientConfig{
+					Endpoint: DefaultEndpoint,
+				},
+				Key:      "token:name",
+				Interval: MinimumInterval,
 			},
 		},
 	}