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snippet inject support like <head lang="en"> #8736

Merged
merged 12 commits into from
Aug 9, 2023
Merged

snippet inject support like <head lang="en"> #8736

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1aaa862
snippet inject support like <head lang="en">
oliver-zhang Jun 15, 2023
f878ca1
code format
oliver-zhang Jun 15, 2023
b4d9d15
Let user passed multiple head tag
oliver-zhang Jun 16, 2023
a8275f9
Check head tag start with <head and end with >
oliver-zhang Jun 19, 2023
41c461d
Update instrumentation/servlet/servlet-common/bootstrap/src/main/java…
oliver-zhang Jun 20, 2023
9d82f76
add test case
oliver-zhang Jul 5, 2023
fab6cec
add test case
oliver-zhang Jul 6, 2023
368dbfe
Revert "add test case"
oliver-zhang Jul 20, 2023
85d36ee
remove the new integration tests and add new tests to the unit tests
oliver-zhang Jul 20, 2023
126fe01
refactor the code
oliver-zhang Jul 20, 2023
65b7b7d
code format
oliver-zhang Jul 20, 2023
8025b30
Merge branch 'main' into servlet-snippet-inject
laurit Aug 9, 2023
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3 changes: 2 additions & 1 deletion ...vaagent/instrumentation/servlet/v3_0/snippet/Servlet3SnippetInjectingResponseWrapper.java
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Original file line number Diff line number Diff line change
Expand Up @@ -153,7 +153,8 @@ public boolean isContentTypeTextHtml() {
if (contentType == null) {
contentType = super.getHeader("content-type");
}
return contentType != null && contentType.startsWith("text/html");
return contentType != null
&& (contentType.startsWith("text/html") || "application/xhtml+xml".equals(contentType));
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}

@Override
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3 changes: 2 additions & 1 deletion ...vaagent/instrumentation/servlet/v5_0/snippet/Servlet5SnippetInjectingResponseWrapper.java
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Expand Up @@ -145,7 +145,8 @@ public boolean isContentTypeTextHtml() {
if (contentType == null) {
contentType = super.getHeader("content-type");
}
return contentType != null && contentType.startsWith("text/html");
return contentType != null
&& (contentType.startsWith("text/html") || "application/xhtml+xml".equals(contentType));
}

@Override
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13 changes: 6 additions & 7 deletions .../bootstrap/src/main/java/io/opentelemetry/javaagent/bootstrap/servlet/InjectionState.java
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Expand Up @@ -8,7 +8,7 @@
// this is shared by both ServletOutputStream and PrintWriter injection
public class InjectionState {
private static final int HEAD_TAG_WRITTEN_FAKE_VALUE = -1;
private static final int HEAD_TAG_LENGTH = "<head>".length();
private static final int HEAD_TAG_PREFIX_LENGTH = 4;
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private final SnippetInjectingResponseWrapper wrapper;
private int headTagBytesSeen = 0;

Expand Down Expand Up @@ -40,12 +40,12 @@ public boolean processByte(int b) {
if (isHeadTagWritten()) {
return false;
}
if (inHeadTag(b)) {
if (inHeadTag(b) && headTagBytesSeen < HEAD_TAG_PREFIX_LENGTH) {
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headTagBytesSeen++;
} else {
} else if (headTagBytesSeen != HEAD_TAG_PREFIX_LENGTH) {
headTagBytesSeen = 0;
}
if (headTagBytesSeen == HEAD_TAG_LENGTH) {
if (headTagBytesSeen == HEAD_TAG_PREFIX_LENGTH && b == '>') {
setHeadTagWritten();
return true;
} else {
Expand All @@ -64,10 +64,9 @@ private boolean inHeadTag(int b) {
return true;
} else if (headTagBytesSeen == 4 && b == 'd') {
return true;
} else if (headTagBytesSeen == 5 && b == '>') {
return true;
} else {
return headTagBytesSeen == HEAD_TAG_PREFIX_LENGTH;
}
return false;
}

public SnippetInjectingResponseWrapper getWrapper() {
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