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Implement COPY TO #5

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Oct 17, 2024
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4 changes: 4 additions & 0 deletions CMakeLists.txt
Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,10 @@ include_directories(third_party)
set(EXTENSION_SOURCES
src/gsheets_extension.cpp
src/gsheets_auth.cpp
src/gsheets_copy.cpp
src/gsheets_requests.cpp
src/gsheets_read.cpp
src/gsheets_utils.cpp
)

build_static_extension(${TARGET_NAME} ${EXTENSION_SOURCES})
Expand Down
139 changes: 139 additions & 0 deletions src/gsheets_copy.cpp
Original file line number Diff line number Diff line change
@@ -0,0 +1,139 @@
#include "gsheets_copy.hpp"
#include "gsheets_requests.hpp"
#include "gsheets_auth.hpp"
#include "gsheets_utils.hpp"

#include "duckdb/common/serializer/buffered_file_writer.hpp"
#include "duckdb/common/file_system.hpp"
#include "duckdb/main/secret/secret_manager.hpp"
#include <json.hpp>

using json = nlohmann::json;

namespace duckdb
{

GSheetCopyFunction::GSheetCopyFunction() : CopyFunction("gsheet")
{
copy_to_bind = GSheetWriteBind;
copy_to_initialize_global = GSheetWriteInitializeGlobal;
copy_to_initialize_local = GSheetWriteInitializeLocal;
copy_to_sink = GSheetWriteSink;
}

struct GSheetCopyGlobalState : public GlobalFunctionData
{
explicit GSheetCopyGlobalState(ClientContext &context, const string &sheet_id, const string &token, const string &sheet_name)
: sheet_id(sheet_id), token(token), sheet_name(sheet_name)
{
}

public:
string sheet_id;
string token;
string sheet_name;
};

struct GSheetWriteBindData : public TableFunctionData
{
};

unique_ptr<FunctionData> GSheetCopyFunction::GSheetWriteBind(ClientContext &context, CopyFunctionBindInput &input, const vector<string> &names, const vector<LogicalType> &sql_types)
{
return make_uniq<GSheetWriteBindData>();
}

unique_ptr<GlobalFunctionData> GSheetCopyFunction::GSheetWriteInitializeGlobal(ClientContext &context, FunctionData &bind_data, const string &file_path)
{
auto &secret_manager = SecretManager::Get(context);
auto transaction = CatalogTransaction::GetSystemCatalogTransaction(context);
auto secret_match = secret_manager.LookupSecret(transaction, "gsheet", "gsheet");

if (!secret_match.HasMatch()) {
throw InvalidInputException("No 'gsheet' secret found. Please create a secret with 'CREATE SECRET' first.");
}

auto &secret = secret_match.GetSecret();
if (secret.GetType() != "gsheet") {
throw InvalidInputException("Invalid secret type. Expected 'gsheet', got '%s'", secret.GetType());
}

const auto *kv_secret = dynamic_cast<const KeyValueSecret*>(&secret);
if (!kv_secret) {
throw InvalidInputException("Invalid secret format for 'gsheet' secret");
}

Value token_value;
if (!kv_secret->TryGetValue("token", token_value)) {
throw InvalidInputException("'token' not found in 'gsheet' secret");
}

std::string token = token_value.ToString();
std::string sheet_id = extract_sheet_id(file_path);
std::string sheet_name = "Sheet1"; // TODO: make this configurable

return make_uniq<GSheetCopyGlobalState>(context, sheet_id, token, sheet_name);
}

unique_ptr<LocalFunctionData> GSheetCopyFunction::GSheetWriteInitializeLocal(ExecutionContext &context, FunctionData &bind_data_p)
{
return make_uniq<LocalFunctionData>();
}

void GSheetCopyFunction::GSheetWriteSink(ExecutionContext &context, FunctionData &bind_data_p, GlobalFunctionData &gstate_p, LocalFunctionData &lstate, DataChunk &input)
{
input.Flatten();
auto &gstate = gstate_p.Cast<GSheetCopyGlobalState>();

// Create object ready to write to Google Sheet
json sheet_data;

// TODO: make this configurable
sheet_data["range"] = "Sheet1";
sheet_data["majorDimension"] = "ROWS";

vector<vector<string>> values;
for (idx_t r = 0; r < input.size(); r++)
{
vector<string> row;
for (idx_t c = 0; c < input.ColumnCount(); c++)
{
auto &col = input.data[c];
switch (col.GetType().id()) {
case LogicalTypeId::VARCHAR:
row.push_back(FlatVector::GetData<string_t>(col)[r].GetString());
break;
case LogicalTypeId::INTEGER:
row.push_back(to_string(FlatVector::GetData<int32_t>(col)[r]));
break;
case LogicalTypeId::BIGINT:
row.push_back(to_string(FlatVector::GetData<int64_t>(col)[r]));
break;
case LogicalTypeId::DOUBLE:
row.push_back(to_string(FlatVector::GetData<double>(col)[r]));
break;
case LogicalTypeId::BOOLEAN:
row.push_back(FlatVector::GetData<bool>(col)[r] ? "TRUE" : "FALSE");
break;
default:
row.push_back("Type not implemented");
break;
}
}
values.push_back(row);
}
sheet_data["values"] = values;

// Convert the JSON object to a string
std::string request_body = sheet_data.dump();

// Make the API call to write data to the Google Sheet
std::string response = fetch_sheet_data(gstate.sheet_id, gstate.token, gstate.sheet_name, HttpMethod::PUT, request_body);

// Check for errors in the response
json response_json = parseJson(response);
if (response_json.contains("error")) {
throw duckdb::IOException("Error writing to Google Sheet: " + response_json["error"]["message"].get<std::string>());
}
}
} // namespace duckdb
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