Rename constants in UPPER_SNAKE_CASE (#68)

Author: Eskibear

src/AzureAppConfigurationImpl.ts

@@ -7,11 +7,11 @@ import { AzureAppConfiguration, ConfigurationObjectConstructionOptions } from ".
 import { AzureAppConfigurationOptions } from "./AzureAppConfigurationOptions";
 import { IKeyValueAdapter } from "./IKeyValueAdapter";
 import { JsonKeyValueAdapter } from "./JsonKeyValueAdapter";
-import { DefaultRefreshIntervalInMs, MinimumRefreshIntervalInMs } from "./RefreshOptions";
+import { DEFAULT_REFRESH_INTERVAL_IN_MS, MIN_REFRESH_INTERVAL_IN_MS } from "./RefreshOptions";
 import { Disposable } from "./common/disposable";
 import { AzureKeyVaultKeyValueAdapter } from "./keyvault/AzureKeyVaultKeyValueAdapter";
 import { RefreshTimer } from "./refresh/RefreshTimer";
-import { CorrelationContextHeaderName } from "./requestTracing/constants";
+import { CORRELATION_CONTEXT_HEADER_NAME } from "./requestTracing/constants";
 import { createCorrelationContextHeader, requestTracingEnabled } from "./requestTracing/utils";
 import { KeyFilter, LabelFilter, SettingSelector } from "./types";
 
@@ -33,7 +33,7 @@ export class AzureAppConfigurationImpl implements AzureAppConfiguration {
     #isInitialLoadCompleted: boolean = false;
 
     // Refresh
-    #refreshInterval: number = DefaultRefreshIntervalInMs;
+    #refreshInterval: number = DEFAULT_REFRESH_INTERVAL_IN_MS;
     #onRefreshListeners: Array<() => any> = [];
     /**
      * Aka watched settings.
@@ -64,8 +64,8 @@ export class AzureAppConfigurationImpl implements AzureAppConfiguration {
 
             // custom refresh interval
             if (refreshIntervalInMs !== undefined) {
-                if (refreshIntervalInMs < MinimumRefreshIntervalInMs) {
-                    throw new Error(`The refresh interval cannot be less than ${MinimumRefreshIntervalInMs} milliseconds.`);
+                if (refreshIntervalInMs < MIN_REFRESH_INTERVAL_IN_MS) {
+                    throw new Error(`The refresh interval cannot be less than ${MIN_REFRESH_INTERVAL_IN_MS} milliseconds.`);
 
                 } else {
                     this.#refreshInterval = refreshIntervalInMs;
@@ -139,10 +139,11 @@ export class AzureAppConfigurationImpl implements AzureAppConfiguration {
                 keyFilter: selector.keyFilter,
                 labelFilter: selector.labelFilter
             };
+
             if (this.#requestTracingEnabled) {
                 listOptions.requestOptions = {
                     customHeaders: {
-                        [CorrelationContextHeaderName]: createCorrelationContextHeader(this.#options, this.#isInitialLoadCompleted)
+                        [CORRELATION_CONTEXT_HEADER_NAME]: createCorrelationContextHeader(this.#options, this.#isInitialLoadCompleted)
                     }
                 }
             }
@@ -348,7 +349,7 @@ export class AzureAppConfigurationImpl implements AzureAppConfiguration {
             if (this.#requestTracingEnabled) {
                 options.requestOptions = {
                     customHeaders: {
-                        [CorrelationContextHeaderName]: createCorrelationContextHeader(this.#options, this.#isInitialLoadCompleted)
+                        [CORRELATION_CONTEXT_HEADER_NAME]: createCorrelationContextHeader(this.#options, this.#isInitialLoadCompleted)
                     }
                 }
             }

src/RefreshOptions.ts

@@ -3,8 +3,8 @@
 
 import { WatchedSetting } from "./WatchedSetting";
 
-export const DefaultRefreshIntervalInMs = 30 * 1000;
-export const MinimumRefreshIntervalInMs = 1 * 1000;
+export const DEFAULT_REFRESH_INTERVAL_IN_MS = 30 * 1000;
+export const MIN_REFRESH_INTERVAL_IN_MS = 1 * 1000;
 
 export interface RefreshOptions {
     /**

src/load.ts

@@ -8,7 +8,7 @@ import { AzureAppConfigurationImpl } from "./AzureAppConfigurationImpl";
 import { AzureAppConfigurationOptions, MaxRetries, MaxRetryDelayInMs } from "./AzureAppConfigurationOptions";
 import * as RequestTracing from "./requestTracing/constants";
 
-const MinDelayForUnhandedError: number = 5000; // 5 seconds
+const MIN_DELAY_FOR_UNHANDLED_ERROR: number = 5000; // 5 seconds
 
 /**
  * Loads the data from Azure App Configuration service and returns an instance of AzureAppConfiguration.
@@ -70,7 +70,7 @@ export async function load(
         // load() method is called in the application's startup code path.
         // Unhandled exceptions cause application crash which can result in crash loops as orchestrators attempt to restart the application.
         // Knowing the intended usage of the provider in startup code path, we mitigate back-to-back crash loops from overloading the server with requests by waiting a minimum time to propagate fatal errors.
-        const delay = MinDelayForUnhandedError - (Date.now() - startTimestamp);
+        const delay = MIN_DELAY_FOR_UNHANDLED_ERROR - (Date.now() - startTimestamp);
         if (delay > 0) {
             await new Promise((resolve) => setTimeout(resolve, delay));
         }
@@ -84,7 +84,7 @@ function instanceOfTokenCredential(obj: unknown) {
 
 function getClientOptions(options?: AzureAppConfigurationOptions): AppConfigurationClientOptions | undefined {
     // user-agent
-    let userAgentPrefix = RequestTracing.UserAgentPrefix; // Default UA for JavaScript Provider
+    let userAgentPrefix = RequestTracing.USER_AGENT_PREFIX; // Default UA for JavaScript Provider
     const userAgentOptions = options?.clientOptions?.userAgentOptions;
     if (userAgentOptions?.userAgentPrefix) {
         userAgentPrefix = `${userAgentOptions.userAgentPrefix} ${userAgentPrefix}`; // Prepend if UA prefix specified by user

src/refresh/RefreshTimer.ts

@@ -16,14 +16,14 @@
  *  - Because of the jitter, the maximum backoff time is actually `MaximumBackoffInMs` * (1 + `JitterRatio`).
  */
 
-const MinimumBackoffInMs = 30 * 1000; // 30s
-const MaximumBackoffInMs = 10 * 60 * 1000; // 10min
-const MaxSafeExponential = 30; // Used to avoid overflow. bitwise operations in JavaScript are limited to 32 bits. It overflows at 2^31 - 1.
-const JitterRatio = 0.25;
+const MIN_BACKOFF_IN_MS = 30 * 1000; // 30s
+const MAX_BACKOFF_IN_MS = 10 * 60 * 1000; // 10min
+const MAX_SAFE_EXPONENTIAL = 30; // Used to avoid overflow. bitwise operations in JavaScript are limited to 32 bits. It overflows at 2^31 - 1.
+const JITTER_RATIO = 0.25;
 
 export class RefreshTimer {
-    #minBackoff: number = MinimumBackoffInMs;
-    #maxBackoff: number = MaximumBackoffInMs;
+    #minBackoff: number = MIN_BACKOFF_IN_MS;
+    #maxBackoff: number = MAX_BACKOFF_IN_MS;
     #failedAttempts: number = 0;
     #backoffEnd: number; // Timestamp
     #interval: number;
@@ -70,14 +70,14 @@ export class RefreshTimer {
         }
 
         // exponential: minBackoffMs * 2^(failedAttempts-1)
-        const exponential = Math.min(this.#failedAttempts - 1, MaxSafeExponential);
+        const exponential = Math.min(this.#failedAttempts - 1, MAX_SAFE_EXPONENTIAL);
         let calculatedBackoffMs = minBackoffMs * (1 << exponential);
         if (calculatedBackoffMs > maxBackoffMs) {
             calculatedBackoffMs = maxBackoffMs;
         }
 
         // jitter: random value between [-1, 1) * jitterRatio * calculatedBackoffMs
-        const jitter = JitterRatio * (Math.random() * 2 - 1);
+        const jitter = JITTER_RATIO * (Math.random() * 2 - 1);
 
         return calculatedBackoffMs * (1 + jitter);
     }

src/requestTracing/constants.ts

@@ -1,48 +1,48 @@
 // Copyright (c) Microsoft Corporation.
 // Licensed under the MIT license.
 
-import { Version } from "../version";
+import { VERSION } from "../version";
 
-export const RequestTracingDisabledEnvironmentVariable = "AZURE_APP_CONFIGURATION_TRACING_DISABLED";
+export const ENV_AZURE_APP_CONFIGURATION_TRACING_DISABLED = "AZURE_APP_CONFIGURATION_TRACING_DISABLED";
 
 // User Agent
-export const UserAgentPrefix = `javascript-appconfiguration-provider/${Version}`;
+export const USER_AGENT_PREFIX = `javascript-appconfiguration-provider/${VERSION}`;
 
 // Correlation Context
-export const CorrelationContextHeaderName = "Correlation-Context";
+export const CORRELATION_CONTEXT_HEADER_NAME = "Correlation-Context";
 
 // Env
-export const NodeJSEnvironmentVariable = "NODE_ENV";
-export const NodeJSDevEnvironmentVariableValue = "development";
-export const EnvironmentKey = "Env";
-export const DevEnvironmentValue = "Dev";
+export const NODEJS_ENV_VAR = "NODE_ENV";
+export const NODEJS_DEV_ENV_VAL = "development";
+export const ENV_KEY = "Env";
+export const DEV_ENV_VAL = "Dev";
 
 // Host Type
-export const HostTypeKey = "Host";
+export const HOST_TYPE_KEY = "Host";
 export enum HostType {
-    AzureFunction = "AzureFunction",
-    AzureWebApp = "AzureWebApp",
-    ContainerApp = "ContainerApp",
-    Kubernetes = "Kubernetes",
-    ServiceFabric = "ServiceFabric",
+    AZURE_FUNCTION = "AzureFunction",
+    AZURE_WEB_APP = "AzureWebApp",
+    CONTAINER_APP = "ContainerApp",
+    KUBERNETES = "Kubernetes",
+    SERVICE_FABRIC = "ServiceFabric",
     // Client-side
-    Browser = "Web",
-    WebWorker = "WebWorker"
+    BROWSER = "Web",
+    WEB_WORKER = "WebWorker"
 }
 
 // Environment variables to identify Host type.
-export const AzureFunctionEnvironmentVariable = "FUNCTIONS_EXTENSION_VERSION";
-export const AzureWebAppEnvironmentVariable = "WEBSITE_SITE_NAME";
-export const ContainerAppEnvironmentVariable = "CONTAINER_APP_NAME";
-export const KubernetesEnvironmentVariable = "KUBERNETES_PORT";
-export const ServiceFabricEnvironmentVariable = "Fabric_NodeName"; // See: https://docs.microsoft.com/en-us/azure/service-fabric/service-fabric-environment-variables-reference
+export const AZURE_FUNCTION_ENV_VAR = "FUNCTIONS_EXTENSION_VERSION";
+export const AZURE_WEB_APP_ENV_VAR = "WEBSITE_SITE_NAME";
+export const CONTAINER_APP_ENV_VAR = "CONTAINER_APP_NAME";
+export const KUBERNETES_ENV_VAR = "KUBERNETES_PORT";
+export const SERVICE_FABRIC_ENV_VAR = "Fabric_NodeName"; // See: https://docs.microsoft.com/en-us/azure/service-fabric/service-fabric-environment-variables-reference
 
 // Request Type
-export const RequestTypeKey = "RequestType";
+export const REQUEST_TYPE_KEY = "RequestType";
 export enum RequestType {
-    Startup = "Startup",
-    Watch = "Watch"
+    STARTUP = "Startup",
+    WATCH = "Watch"
 }
 
 // Tag names
-export const KeyVaultConfiguredTag = "UsesKeyVault";
+export const KEY_VAULT_CONFIGURED_TAG = "UsesKeyVault";

src/requestTracing/utils.ts

@@ -3,21 +3,21 @@
 
 import { AzureAppConfigurationOptions } from "../AzureAppConfigurationOptions";
 import {
-    AzureFunctionEnvironmentVariable,
-    AzureWebAppEnvironmentVariable,
-    ContainerAppEnvironmentVariable,
-    DevEnvironmentValue,
-    EnvironmentKey,
+    AZURE_FUNCTION_ENV_VAR,
+    AZURE_WEB_APP_ENV_VAR,
+    CONTAINER_APP_ENV_VAR,
+    DEV_ENV_VAL,
+    ENV_AZURE_APP_CONFIGURATION_TRACING_DISABLED,
+    ENV_KEY,
+    HOST_TYPE_KEY,
     HostType,
-    HostTypeKey,
-    KeyVaultConfiguredTag,
-    KubernetesEnvironmentVariable,
-    NodeJSDevEnvironmentVariableValue,
-    NodeJSEnvironmentVariable,
-    RequestTracingDisabledEnvironmentVariable,
+    KEY_VAULT_CONFIGURED_TAG,
+    KUBERNETES_ENV_VAR,
+    NODEJS_DEV_ENV_VAL,
+    NODEJS_ENV_VAR,
+    REQUEST_TYPE_KEY,
     RequestType,
-    RequestTypeKey,
-    ServiceFabricEnvironmentVariable
+    SERVICE_FABRIC_ENV_VAR
 } from "./constants";
 
 // Utils
@@ -29,15 +29,15 @@ export function createCorrelationContextHeader(options: AzureAppConfigurationOpt
     UsersKeyVault
     */
     const keyValues = new Map<string, string | undefined>();
-    keyValues.set(RequestTypeKey, isInitialLoadCompleted ? RequestType.Watch : RequestType.Startup);
-    keyValues.set(HostTypeKey, getHostType());
-    keyValues.set(EnvironmentKey, isDevEnvironment() ? DevEnvironmentValue : undefined);
+    keyValues.set(REQUEST_TYPE_KEY, isInitialLoadCompleted ? RequestType.WATCH : RequestType.STARTUP);
+    keyValues.set(HOST_TYPE_KEY, getHostType());
+    keyValues.set(ENV_KEY, isDevEnvironment() ? DEV_ENV_VAL : undefined);
 
     const tags: string[] = [];
     if (options?.keyVaultOptions) {
         const { credential, secretClients, secretResolver } = options.keyVaultOptions;
         if (credential !== undefined || secretClients?.length || secretResolver !== undefined) {
-            tags.push(KeyVaultConfiguredTag);
+            tags.push(KEY_VAULT_CONFIGURED_TAG);
         }
     }
 
@@ -55,7 +55,7 @@ export function createCorrelationContextHeader(options: AzureAppConfigurationOpt
 }
 
 export function requestTracingEnabled(): boolean {
-    const requestTracingDisabledEnv = getEnvironmentVariable(RequestTracingDisabledEnvironmentVariable);
+    const requestTracingDisabledEnv = getEnvironmentVariable(ENV_AZURE_APP_CONFIGURATION_TRACING_DISABLED);
     const disabled = requestTracingDisabledEnv?.toLowerCase() === "true";
     return !disabled;
 }
@@ -71,27 +71,27 @@ function getEnvironmentVariable(name: string) {
 
 function getHostType(): string | undefined {
     let hostType: string | undefined;
-    if (getEnvironmentVariable(AzureFunctionEnvironmentVariable)) {
-        hostType = HostType.AzureFunction;
-    } else if (getEnvironmentVariable(AzureWebAppEnvironmentVariable)) {
-        hostType = HostType.AzureWebApp;
-    } else if (getEnvironmentVariable(ContainerAppEnvironmentVariable)) {
-        hostType = HostType.ContainerApp;
-    } else if (getEnvironmentVariable(KubernetesEnvironmentVariable)) {
-        hostType = HostType.Kubernetes;
-    } else if (getEnvironmentVariable(ServiceFabricEnvironmentVariable)) {
-        hostType = HostType.ServiceFabric;
+    if (getEnvironmentVariable(AZURE_FUNCTION_ENV_VAR)) {
+        hostType = HostType.AZURE_FUNCTION;
+    } else if (getEnvironmentVariable(AZURE_WEB_APP_ENV_VAR)) {
+        hostType = HostType.AZURE_WEB_APP;
+    } else if (getEnvironmentVariable(CONTAINER_APP_ENV_VAR)) {
+        hostType = HostType.CONTAINER_APP;
+    } else if (getEnvironmentVariable(KUBERNETES_ENV_VAR)) {
+        hostType = HostType.KUBERNETES;
+    } else if (getEnvironmentVariable(SERVICE_FABRIC_ENV_VAR)) {
+        hostType = HostType.SERVICE_FABRIC;
     } else if (isBrowser()) {
-        hostType = HostType.Browser;
+        hostType = HostType.BROWSER;
     } else if (isWebWorker()) {
-        hostType = HostType.WebWorker;
+        hostType = HostType.WEB_WORKER;
     }
     return hostType;
 }
 
 function isDevEnvironment(): boolean {
-    const envType = getEnvironmentVariable(NodeJSEnvironmentVariable);
-    if (NodeJSDevEnvironmentVariableValue === envType?.toLowerCase()) {
+    const envType = getEnvironmentVariable(NODEJS_ENV_VAR);
+    if (NODEJS_DEV_ENV_VAL === envType?.toLowerCase()) {
         return true;
     }
     return false;

src/version.ts

@@ -1,4 +1,4 @@
 // Copyright (c) Microsoft Corporation.
 // Licensed under the MIT license.
 
-export const Version = "1.0.0-preview";
+export const VERSION = "1.0.0-preview";