changed the host env variable

Author: surbhigarg92

google-cloud-spanner/src/main/java/com/google/cloud/spanner/SpannerOptions.java

@@ -673,7 +673,7 @@ protected SpannerOptions(Builder builder) {
     enableExtendedTracing = builder.enableExtendedTracing;
     enableBuiltInMetrics = builder.enableBuiltInMetrics;
     enableEndToEndTracing = builder.enableEndToEndTracing;
-    metricsHost = builder.metricsHost;
+    metricsHost = builder.spannerMonitoringHost;
   }
 
   /**
@@ -715,7 +715,7 @@ default boolean isEnableEndToEndTracing() {
       return false;
     }
 
-    default String getMetricsHost() {
+    default String getSpannerMonitoringHost() {
       return null;
     }
   }
@@ -734,7 +734,7 @@ private static class SpannerEnvironmentImpl implements SpannerEnvironment {
     private static final String SPANNER_ENABLE_END_TO_END_TRACING =
         "SPANNER_ENABLE_END_TO_END_TRACING";
     private static final String SPANNER_DISABLE_BUILTIN_METRICS = "SPANNER_DISABLE_BUILTIN_METRICS";
-    private static final String SPANNER_METRICS_HOST = "SPANNER_METRICS_HOST";
+    private static final String SPANNER_MONITORING_HOST = "SPANNER_MONITORING_HOST";
 
     private SpannerEnvironmentImpl() {}
 
@@ -772,8 +772,8 @@ public boolean isEnableEndToEndTracing() {
     }
 
     @Override
-    public String getMetricsHost() {
-      return System.getenv(SPANNER_METRICS_HOST);
+    public String getSpannerMonitoringHost() {
+      return System.getenv(SPANNER_MONITORING_HOST);
     }
   }
 
@@ -840,7 +840,7 @@ public static class Builder
     private boolean enableExtendedTracing = SpannerOptions.environment.isEnableExtendedTracing();
     private boolean enableEndToEndTracing = SpannerOptions.environment.isEnableEndToEndTracing();
     private boolean enableBuiltInMetrics = SpannerOptions.environment.isEnableBuiltInMetrics();
-    private String metricsHost = SpannerOptions.environment.getMetricsHost();
+    private String spannerMonitoringHost = SpannerOptions.environment.getSpannerMonitoringHost();
 
     private static String createCustomClientLibToken(String token) {
       return token + " " + ServiceOptions.getGoogApiClientLibName();
@@ -908,7 +908,7 @@ protected Builder() {
       this.enableExtendedTracing = options.enableExtendedTracing;
       this.enableBuiltInMetrics = options.enableBuiltInMetrics;
       this.enableEndToEndTracing = options.enableEndToEndTracing;
-      this.metricsHost = options.metricsHost;
+      this.spannerMonitoringHost = options.metricsHost;
     }
 
     @Override
@@ -1432,8 +1432,8 @@ public Builder setBuiltInMetricsEnabled(boolean enableBuiltInMetrics) {
     }
 
     /** Sets the metrics host to be used for Built-in client side metrics */
-    public Builder setMetricsHost(String metricsHost) {
-      this.metricsHost = metricsHost;
+    public Builder setSpannerMonitoringHost(String spannerMonitoringHost) {
+      this.spannerMonitoringHost = spannerMonitoringHost;
       return this;
     }
 
@@ -1775,7 +1775,7 @@ public boolean isEnableBuiltInMetrics() {
   }
 
   /** Returns the override metrics Host. */
-  String getMetricsHost() {
+  String getSpannerMonitoringHost() {
     return metricsHost;
   }
 

google-cloud-spanner/src/test/java/com/google/cloud/spanner/SpannerOptionsTest.java

@@ -757,13 +757,13 @@ public void testEndToEndTracingEnablement() {
   @Test
   public void testMetricsHost() {
     String metricsEndpoint = "test-endpoint:443";
-    assertNull(SpannerOptions.newBuilder().setProjectId("p").build().getMetricsHost());
+    assertNull(SpannerOptions.newBuilder().setProjectId("p").build().getSpannerMonitoringHost());
     assertThat(
             SpannerOptions.newBuilder()
                 .setProjectId("p")
-                .setMetricsHost(metricsEndpoint)
+                .setSpannerMonitoringHost(metricsEndpoint)
                 .build()
-                .getMetricsHost())
+                .getSpannerMonitoringHost())
         .isEqualTo(metricsEndpoint);
   }