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42 changes: 42 additions & 0 deletions
42
...pectit-ocelot-eum-server/src/main/java/rocks/inspectit/oce/eum/server/utils/TagUtils.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,42 @@ | ||
| package rocks.inspectit.oce.eum.server.utils; | ||
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| import io.opencensus.internal.StringUtils; | ||
| import io.opencensus.tags.TagValue; | ||
| import lombok.extern.slf4j.Slf4j; | ||
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| @Slf4j | ||
| public final class TagUtils { | ||
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| private static boolean isWarningPrinted = false; | ||
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| private TagUtils() { | ||
| // empty private default constructor for util class | ||
| } | ||
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| /** | ||
| * Constructs a {@code io.opencensus.tags.TagValue} from the given string. | ||
| * If String is not valid an <code><invalid></code> TagName is created. | ||
| * | ||
| * @param v the tag value | ||
| * @return the created TagValue with 'v' or '<invalid>' | ||
| */ | ||
| public static TagValue createTagValue(String v) { | ||
| if (isTagValueValid(v)) { | ||
| return TagValue.create(v); | ||
| } | ||
| printWarningOnce(); | ||
| return TagValue.create("<invalid>"); | ||
| } | ||
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| private static boolean isTagValueValid(String value) { | ||
| return value.length() <= TagValue.MAX_LENGTH && StringUtils.isPrintableString(value); | ||
| } | ||
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| private static void printWarningOnce() { | ||
| if (!isWarningPrinted) { | ||
| log.warn("illegal tag value converted to <invalid>"); | ||
| isWarningPrinted = true; | ||
| } | ||
| } | ||
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| } |
27 changes: 27 additions & 0 deletions
27
...it-ocelot-eum-server/src/test/java/rocks/inspectit/oce/eum/server/utils/TagUtilsTest.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,27 @@ | ||
| package rocks.inspectit.oce.eum.server.utils; | ||
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| import io.opencensus.tags.TagValue; | ||
| import org.junit.jupiter.api.Test; | ||
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| import static org.assertj.core.api.Assertions.assertThat; | ||
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| public class TagUtilsTest { | ||
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| @Test | ||
| public void createTagValue() { | ||
| assertThat(TagUtils.createTagValue("my-tag-value")).isEqualTo(TagValue.create("my-tag-value")); | ||
| } | ||
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| @Test | ||
| public void createTagValue_tooLong() { | ||
| assertThat(TagUtils.createTagValue("this-value-is-over-255-characters-long ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------")) | ||
| .isEqualTo(TagValue.create("<invalid>")); | ||
| } | ||
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| @Test | ||
| public void createTagValue_nonPrintableCharacter() { | ||
| assertThat(TagUtils.createTagValue("non-printable-character-\u007f")) | ||
| .isEqualTo(TagValue.create("<invalid>")); | ||
| } | ||
|
|
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| } |
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