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feat(clp-s): Unescape string values during ingestion and fix support for search using escape sequences. #622

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feat(clp-s): Unescape string values during ingestion and fix support for search using escape sequences. #622

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1717f54
Add utilities for escaping search queries and fix kql escaping behaviour
gibber9809 Dec 13, 2024
407ed46
Change archive format to include only unescaped keys and values
gibber9809 Dec 13, 2024
0b71b46
Add tests for kql value escaping
gibber9809 Dec 16, 2024
8508084
Add tests for more edge cases
gibber9809 Dec 16, 2024
1483c35
Address rabbit comments
gibber9809 Dec 16, 2024
3abe7b3
Apply suggestions from code review
gibber9809 Dec 19, 2024
10307f5
Address code review comments
gibber9809 Dec 19, 2024
50653cb
Merge remote-tracking branch 'upstream/main' into escape-char-fix
gibber9809 Dec 19, 2024
2042a1e
Remove escaping in ir ingestion path that is unnecessary because of t…
gibber9809 Dec 19, 2024
e236e61
Fix array search bug
gibber9809 Dec 21, 2024
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22 changes: 22 additions & 0 deletions components/core/src/clp_s/ColumnReader.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@

#include "BufferViewReader.hpp"
#include "ColumnWriter.hpp"
#include "Utils.hpp"
#include "VariableDecoder.hpp"

namespace clp_s {
Expand Down Expand Up @@ -88,6 +89,20 @@ void ClpStringColumnReader::extract_string_value_into_buffer(
VariableDecoder::decode_variables_into_message(entry, *m_var_dict, encoded_vars, buffer);
}

void ClpStringColumnReader::extract_escaped_string_value_into_buffer(
uint64_t cur_message,
std::string& buffer
) {
if (false == m_is_array) {
// TODO: escape while decoding instead of after.
std::string tmp;
extract_string_value_into_buffer(cur_message, tmp);
StringUtils::escape_json_string(buffer, tmp);
} else {
extract_string_value_into_buffer(cur_message, buffer);
}
}

int64_t ClpStringColumnReader::get_encoded_id(uint64_t cur_message) {
auto value = m_logtypes[cur_message];
return ClpStringColumnWriter::get_encoded_log_dict_id(value);
Expand Down Expand Up @@ -125,6 +140,13 @@ void VariableStringColumnReader::extract_string_value_into_buffer(
buffer.append(m_var_dict->get_value(m_variables[cur_message]));
}

void VariableStringColumnReader::extract_escaped_string_value_into_buffer(
uint64_t cur_message,
std::string& buffer
) {
StringUtils::escape_json_string(buffer, m_var_dict->get_value(m_variables[cur_message]));
}

int64_t VariableStringColumnReader::get_variable_id(uint64_t cur_message) {
return m_variables[cur_message];
}
Expand Down
17 changes: 17 additions & 0 deletions components/core/src/clp_s/ColumnReader.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -53,6 +53,17 @@ class BaseColumnReader {
*/
virtual void extract_string_value_into_buffer(uint64_t cur_message, std::string& buffer) = 0;

/**
* Extracts a value from the column, escapes it, and serializes it into a provided buffer as a
* string.
* @param cur_message
* @param buffer
*/
virtual void
extract_escaped_string_value_into_buffer(uint64_t cur_message, std::string& buffer) {
extract_string_value_into_buffer(cur_message, buffer);
}

private:
int32_t m_id;
};
Expand Down Expand Up @@ -152,6 +163,9 @@ class ClpStringColumnReader : public BaseColumnReader {

void extract_string_value_into_buffer(uint64_t cur_message, std::string& buffer) override;

void
extract_escaped_string_value_into_buffer(uint64_t cur_message, std::string& buffer) override;

/**
* Gets the encoded id of the variable
* @param cur_message
Expand Down Expand Up @@ -196,6 +210,9 @@ class VariableStringColumnReader : public BaseColumnReader {

void extract_string_value_into_buffer(uint64_t cur_message, std::string& buffer) override;

void
extract_escaped_string_value_into_buffer(uint64_t cur_message, std::string& buffer) override;

/**
* Gets the encoded id of the variable
* @param cur_message
Expand Down
21 changes: 7 additions & 14 deletions components/core/src/clp_s/JsonParser.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -63,7 +63,7 @@ void JsonParser::parse_obj_in_array(ondemand::object line, int32_t parent_node_i
size_t object_start = m_current_schema.start_unordered_object(NodeType::Object);
ondemand::field cur_field;
ondemand::value cur_value;
std::string cur_key;
std::string_view cur_key;
int32_t node_id;
while (true) {
while (false == object_stack.empty() && object_it_stack.top() == object_stack.top().end()) {
Expand All @@ -81,7 +81,7 @@ void JsonParser::parse_obj_in_array(ondemand::object line, int32_t parent_node_i
}

cur_field = *object_it_stack.top();
cur_key = std::string_view(cur_field.unescaped_key(true));
cur_key = cur_field.unescaped_key(true);
cur_value = cur_field.value();

switch (cur_value.type()) {
Expand Down Expand Up @@ -131,9 +131,7 @@ void JsonParser::parse_obj_in_array(ondemand::object line, int32_t parent_node_i
break;
}
case ondemand::json_type::string: {
std::string value = std::string(
cur_value.raw_json_token().substr(1, cur_value.raw_json_token().size() - 2)
);
std::string_view value = cur_value.get_string(true);
if (value.find(' ') != std::string::npos) {
node_id = m_archive_writer
->add_node(node_id_stack.top(), NodeType::ClpString, cur_key);
Expand Down Expand Up @@ -209,9 +207,7 @@ void JsonParser::parse_array(ondemand::array array, int32_t parent_node_id) {
break;
}
case ondemand::json_type::string: {
std::string value = std::string(
cur_value.raw_json_token().substr(1, cur_value.raw_json_token().size() - 2)
);
std::string_view value = cur_value.get_string(true);
if (value.find(' ') != std::string::npos) {
node_id = m_archive_writer->add_node(parent_node_id, NodeType::ClpString, "");
} else {
Expand Down Expand Up @@ -246,7 +242,7 @@ void JsonParser::parse_line(ondemand::value line, int32_t parent_node_id, std::s

ondemand::field cur_field;

std::string cur_key = key;
std::string_view cur_key = key;
node_id_stack.push(parent_node_id);

bool can_match_timestamp = !m_timestamp_column.empty();
Expand All @@ -257,7 +253,7 @@ void JsonParser::parse_line(ondemand::value line, int32_t parent_node_id, std::s
do {
if (false == object_stack.empty()) {
cur_field = *object_it_stack.top();
cur_key = std::string(std::string_view(cur_field.unescaped_key(true)));
cur_key = cur_field.unescaped_key(true);
line = cur_field.value();
if (may_match_timestamp) {
if (object_stack.size() <= m_timestamp_column.size()
Expand Down Expand Up @@ -353,10 +349,7 @@ void JsonParser::parse_line(ondemand::value line, int32_t parent_node_id, std::s
break;
}
case ondemand::json_type::string: {
auto raw_json_token = line.raw_json_token();
std::string value
= std::string(raw_json_token.substr(1, raw_json_token.rfind('"') - 1));

std::string_view value = line.get_string(true);
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I read from the docs that unmatched surrogate pairs are treated as an error without true. Do you think we should throw an error here?

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Right, the behaviour with true specifically is that it will replace any invalid unicode codepoint with a placeholder unicode character. This ensures that this method always returns valid utf-8, but can sometimes modify the original input.

The way I see this is that if a user wants to ingest their data despite it containing some invalid unicode this is really one of the only good ways of doing it automatically.

That said, its possible that some users would prefer failing ingestion so that they get direct feedback that they're producing invalid JSON. I could add a flag for this in this PR, or create a github issue to track this feature to add it later if you want?

Also, for what its worth, I talked to @kirkrodrigues when deciding what to do here and he agreed that the automatic utf-8 fix is probably desirable for large deployments.

if (matches_timestamp) {
node_id = m_archive_writer->add_node(
node_id_stack.top(),
Expand Down
23 changes: 19 additions & 4 deletions components/core/src/clp_s/JsonSerializer.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,9 @@
#include <vector>

#include "ColumnReader.hpp"
#include "Utils.hpp"

namespace clp_s {

class JsonSerializer {
public:
Expand Down Expand Up @@ -67,7 +70,11 @@ class JsonSerializer {
return false;
}

void add_special_key(std::string_view const key) { m_special_keys.emplace_back(key); }
void add_special_key(std::string_view const key) {
std::string tmp;
StringUtils::escape_json_string(tmp, key);
m_special_keys.emplace_back(tmp);
}

void begin_object() {
append_key();
Expand Down Expand Up @@ -109,11 +116,11 @@ class JsonSerializer {
m_json_string += "],";
}

void append_key() { append_key(m_special_keys[m_special_keys_index++]); }
void append_key() { append_escaped_key(m_special_keys[m_special_keys_index++]); }

void append_key(std::string_view const key) {
m_json_string += "\"";
m_json_string += key;
StringUtils::escape_json_string(m_json_string, key);
m_json_string += "\":";
}

Expand All @@ -130,11 +137,17 @@ class JsonSerializer {
void
append_value_from_column_with_quotes(clp_s::BaseColumnReader* column, uint64_t cur_message) {
m_json_string += "\"";
column->extract_string_value_into_buffer(cur_message, m_json_string);
column->extract_escaped_string_value_into_buffer(cur_message, m_json_string);
m_json_string += "\",";
}

private:
void append_escaped_key(std::string_view const key) {
m_json_string.push_back('"');
m_json_string.append(key);
m_json_string.append("\":");
}

std::string m_json_string;
std::vector<Op> m_op_list;
std::vector<std::string> m_special_keys;
Expand All @@ -143,4 +156,6 @@ class JsonSerializer {
size_t m_special_keys_index{0};
};

} // namespace clp_s

#endif // CLP_S_JSONSERIALIZER_HPP
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