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11 files changed

+246
-33
lines changed

11 files changed

+246
-33
lines changed

‎api/all/src/main/java/io/opentelemetry/api/common/JsonUtil.java‎

Lines changed: 136 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,136 @@
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/*
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* Copyright The OpenTelemetry Authors
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* SPDX-License-Identifier: Apache-2.0
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*/
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package io.opentelemetry.api.common;
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import java.nio.ByteBuffer;
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import java.util.Base64;
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import java.util.List;
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/** Package-private utility for JSON encoding. */
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final class JsonUtil {
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private static final char[] HEX_DIGITS = {
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'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'
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};
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@SuppressWarnings("unchecked")
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static void appendJsonValue(StringBuilder sb, Value<?> value) {
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switch (value.getType()) {
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case STRING:
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appendJsonString(sb, (String) value.getValue());
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break;
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case LONG:
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sb.append(value.getValue());
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break;
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case DOUBLE:
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appendJsonDouble(sb, (Double) value.getValue());
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break;
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case BOOLEAN:
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sb.append(value.getValue());
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break;
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case ARRAY:
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appendJsonArray(sb, (List<Value<?>>) value.getValue());
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break;
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case KEY_VALUE_LIST:
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appendJsonKeyValueList(sb, (List<KeyValue>) value.getValue());
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break;
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case BYTES:
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appendJsonBytes(sb, (ByteBuffer) value.getValue());
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break;
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case EMPTY:
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sb.append("null");
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break;
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}
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}
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static void appendJsonString(StringBuilder sb, String value) {
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sb.append('"');
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for (int i = 0; i < value.length(); i++) {
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char c = value.charAt(i);
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switch (c) {
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case '"':
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sb.append("\\\"");
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break;
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case '\\':
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sb.append("\\\\");
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break;
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case '\b':
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sb.append("\\b");
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break;
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case '\f':
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sb.append("\\f");
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break;
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case '\n':
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sb.append("\\n");
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break;
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case '\r':
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sb.append("\\r");
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break;
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case '\t':
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sb.append("\\t");
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break;
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default:
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if (c < 0x20) {
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// Control characters must be escaped as \\uXXXX
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sb.append("\\u");
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sb.append(HEX_DIGITS[(c >> 12) & 0xF]);
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sb.append(HEX_DIGITS[(c >> 8) & 0xF]);
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sb.append(HEX_DIGITS[(c >> 4) & 0xF]);
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sb.append(HEX_DIGITS[c & 0xF]);
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} else {
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sb.append(c);
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}
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}
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}
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sb.append('"');
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}
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private static void appendJsonDouble(StringBuilder sb, double value) {
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if (Double.isNaN(value)) {
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// Encoding as string to match ProtoJSON: https://protobuf.dev/programming-guides/json/
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sb.append("\"NaN\"");
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} else if (Double.isInfinite(value)) {
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// Encoding as string to match ProtoJSON: https://protobuf.dev/programming-guides/json/
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sb.append(value > 0 ? "\"Infinity\"" : "\"-Infinity\"");
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} else {
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sb.append(value);
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}
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}
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private static void appendJsonBytes(StringBuilder sb, ByteBuffer value) {
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// Encoding as base64 to match ProtoJSON: https://protobuf.dev/programming-guides/json/
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byte[] bytes = new byte[value.remaining()];
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value.duplicate().get(bytes);
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sb.append('"').append(Base64.getEncoder().encodeToString(bytes)).append('"');
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}
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private static void appendJsonArray(StringBuilder sb, List<Value<?>> values) {
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sb.append('[');
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for (int i = 0; i < values.size(); i++) {
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if (i > 0) {
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sb.append(',');
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}
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appendJsonValue(sb, values.get(i));
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}
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sb.append(']');
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}
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private static void appendJsonKeyValueList(StringBuilder sb, List<KeyValue> values) {
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sb.append('{');
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for (int i = 0; i < values.size(); i++) {
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if (i > 0) {
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sb.append(',');
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}
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KeyValue kv = values.get(i);
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appendJsonString(sb, kv.getKey());
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sb.append(':');
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appendJsonValue(sb, kv.getValue());
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}
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sb.append('}');
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}
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private JsonUtil() {}
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}

‎api/all/src/main/java/io/opentelemetry/api/common/KeyValueList.java‎

Lines changed: 3 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -5,8 +5,6 @@
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package io.opentelemetry.api.common;
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import static java.util.stream.Collectors.joining;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collections;
@@ -50,9 +48,9 @@ public List<KeyValue> getValue() {
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@Override
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public String asString() {
53-
return value.stream()
54-
.map(item -> item.getKey() + "=" + item.getValue().asString())
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.collect(joining(", ", "[", "]"));
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StringBuilder sb = new StringBuilder();
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JsonUtil.appendJsonValue(sb, this);
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return sb.toString();
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}
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@Override

‎api/all/src/main/java/io/opentelemetry/api/common/ValueArray.java‎

Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -5,8 +5,6 @@
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package io.opentelemetry.api.common;
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8-
import static java.util.stream.Collectors.joining;
9-
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collections;
@@ -44,7 +42,9 @@ public List<Value<?>> getValue() {
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@Override
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public String asString() {
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return value.stream().map(Value::asString).collect(joining(", ", "[", "]"));
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StringBuilder sb = new StringBuilder();
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JsonUtil.appendJsonValue(sb, this);
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return sb.toString();
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}
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@Override

‎api/all/src/main/java/io/opentelemetry/api/common/ValueBoolean.java‎

Lines changed: 3 additions & 1 deletion
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@@ -31,7 +31,9 @@ public Boolean getValue() {
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@Override
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public String asString() {
34-
return String.valueOf(value);
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StringBuilder sb = new StringBuilder();
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JsonUtil.appendJsonValue(sb, this);
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return sb.toString();
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}
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3739
@Override

‎api/all/src/main/java/io/opentelemetry/api/common/ValueBytes.java‎

Lines changed: 3 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,6 @@
77

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import java.nio.ByteBuffer;
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import java.util.Arrays;
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import java.util.Base64;
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import java.util.Objects;
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final class ValueBytes implements Value<ByteBuffer> {
@@ -35,7 +34,9 @@ public ByteBuffer getValue() {
3534

3635
@Override
3736
public String asString() {
38-
return Base64.getEncoder().encodeToString(raw);
37+
StringBuilder sb = new StringBuilder();
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JsonUtil.appendJsonValue(sb, this);
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return sb.toString();
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}
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4142
@Override

‎api/all/src/main/java/io/opentelemetry/api/common/ValueDouble.java‎

Lines changed: 3 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -31,7 +31,9 @@ public Double getValue() {
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3232
@Override
3333
public String asString() {
34-
return String.valueOf(value);
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StringBuilder sb = new StringBuilder();
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JsonUtil.appendJsonValue(sb, this);
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return sb.toString();
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}
3638

3739
@Override

‎api/all/src/main/java/io/opentelemetry/api/common/ValueEmpty.java‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -27,7 +27,7 @@ public Void getValue() {
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2828
@Override
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public String asString() {
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return "";
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return "null";
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}
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3333
@Override

‎api/all/src/main/java/io/opentelemetry/api/common/ValueLong.java‎

Lines changed: 3 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -31,7 +31,9 @@ public Long getValue() {
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3232
@Override
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public String asString() {
34-
return String.valueOf(value);
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StringBuilder sb = new StringBuilder();
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JsonUtil.appendJsonValue(sb, this);
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return sb.toString();
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}
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3739
@Override

‎api/all/src/main/java/io/opentelemetry/api/common/ValueString.java‎

Lines changed: 3 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -32,7 +32,9 @@ public String getValue() {
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3333
@Override
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public String asString() {
35-
return value;
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StringBuilder sb = new StringBuilder();
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JsonUtil.appendJsonValue(sb, this);
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return sb.toString();
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}
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@Override

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