adamdebreceni commented on a change in pull request #1004:
URL: https://github.com/apache/nifi-minifi-cpp/pull/1004#discussion_r601475374
##########
File path: extensions/sql/processors/ExecuteSQL.cpp
##########
@@ -51,72 +41,87 @@ namespace processors {
const std::string ExecuteSQL::ProcessorName("ExecuteSQL");
-const core::Property ExecuteSQL::s_sqlSelectQuery(
- core::PropertyBuilder::createProperty("SQL select
query")->isRequired(true)->withDescription(
+const core::Property ExecuteSQL::SQLSelectQuery(
+ core::PropertyBuilder::createProperty("SQL select query")
+ ->withDescription(
"The SQL select query to execute. The query can be empty, a constant
value, or built from attributes using Expression Language. "
"If this property is specified, it will be used regardless of the content
of incoming flowfiles. "
"If this property is empty, the content of the incoming flow file is
expected to contain a valid SQL select query, to be issued by the processor to
the database. "
- "Note that Expression Language is not evaluated for flow file
contents.")->supportsExpressionLanguage(true)->build());
+ "Note that Expression Language is not evaluated for flow file contents.")
+ ->supportsExpressionLanguage(true)->build());
-const core::Property ExecuteSQL::s_maxRowsPerFlowFile(
- core::PropertyBuilder::createProperty("Max Rows Per Flow
File")->isRequired(true)->withDefaultValue<int>(0)->withDescription(
- "The maximum number of result rows that will be included intoi a flow
file. If zero then all will be placed into the flow
file")->supportsExpressionLanguage(true)->build());
+const core::Relationship ExecuteSQL::Success("success", "Successfully created
FlowFile from SQL query result set.");
-const core::Relationship ExecuteSQL::s_success("success", "Successfully
created FlowFile from SQL query result set.");
-
-static const std::string ResultRowCount = "executesql.row.count";
+const std::string ExecuteSQL::RESULT_ROW_COUNT = "executesql.row.count";
+const std::string ExecuteSQL::INPUT_FLOW_FILE_UUID = "input.flowfile.uuid";
ExecuteSQL::ExecuteSQL(const std::string& name, utils::Identifier uuid)
- : SQLProcessor(name, uuid), max_rows_(0) {
+ : SQLProcessor(name, uuid, logging::LoggerFactory<ExecuteSQL>::getLogger()) {
}
-ExecuteSQL::~ExecuteSQL() = default;
-
void ExecuteSQL::initialize() {
//! Set the supported properties
- setSupportedProperties({ dbControllerService(), outputFormat(),
s_sqlSelectQuery, s_maxRowsPerFlowFile});
+ setSupportedProperties({ DBControllerService, OutputFormat, SQLSelectQuery,
MaxRowsPerFlowFile});
//! Set the supported relationships
- setSupportedRelationships({ s_success });
+ setSupportedRelationships({ Success });
}
-void ExecuteSQL::processOnSchedule(core::ProcessContext &context) {
- initOutputFormat(context);
+void ExecuteSQL::processOnSchedule(core::ProcessContext& context) {
+ context.getProperty(OutputFormat.getName(), output_format_);
- context.getProperty(s_sqlSelectQuery.getName(), sqlSelectQuery_);
- context.getProperty(s_maxRowsPerFlowFile.getName(), max_rows_);
+ max_rows_ = [&] {
+ uint64_t max_rows;
+ context.getProperty(MaxRowsPerFlowFile.getName(), max_rows);
+ return gsl::narrow<size_t>(max_rows);
+ }();
}
-void ExecuteSQL::processOnTrigger(core::ProcessSession& session) {
- auto statement = connection_->prepareStatement(sqlSelectQuery_);
+void ExecuteSQL::processOnTrigger(core::ProcessContext& context,
core::ProcessSession& session) {
+ auto input_flow_file = session.get();
- auto rowset = statement->execute();
-
- int count = 0;
- size_t rowCount = 0;
- sql::JSONSQLWriter sqlWriter(isJSONPretty());
- sql::SQLRowsetProcessor sqlRowsetProcessor(rowset, { &sqlWriter });
+ std::string query;
+ if (!context.getProperty(SQLSelectQuery, query, input_flow_file)) {
+ if (!input_flow_file) {
+ throw Exception(PROCESSOR_EXCEPTION,
+ "No incoming FlowFile and the \"SQL select query\"
processor property is not specified");
Review comment:
done
##########
File path: extensions/sql/processors/ExecuteSQL.cpp
##########
@@ -51,72 +41,87 @@ namespace processors {
const std::string ExecuteSQL::ProcessorName("ExecuteSQL");
-const core::Property ExecuteSQL::s_sqlSelectQuery(
- core::PropertyBuilder::createProperty("SQL select
query")->isRequired(true)->withDescription(
+const core::Property ExecuteSQL::SQLSelectQuery(
+ core::PropertyBuilder::createProperty("SQL select query")
+ ->withDescription(
"The SQL select query to execute. The query can be empty, a constant
value, or built from attributes using Expression Language. "
"If this property is specified, it will be used regardless of the content
of incoming flowfiles. "
"If this property is empty, the content of the incoming flow file is
expected to contain a valid SQL select query, to be issued by the processor to
the database. "
- "Note that Expression Language is not evaluated for flow file
contents.")->supportsExpressionLanguage(true)->build());
+ "Note that Expression Language is not evaluated for flow file contents.")
+ ->supportsExpressionLanguage(true)->build());
-const core::Property ExecuteSQL::s_maxRowsPerFlowFile(
- core::PropertyBuilder::createProperty("Max Rows Per Flow
File")->isRequired(true)->withDefaultValue<int>(0)->withDescription(
- "The maximum number of result rows that will be included intoi a flow
file. If zero then all will be placed into the flow
file")->supportsExpressionLanguage(true)->build());
+const core::Relationship ExecuteSQL::Success("success", "Successfully created
FlowFile from SQL query result set.");
-const core::Relationship ExecuteSQL::s_success("success", "Successfully
created FlowFile from SQL query result set.");
-
-static const std::string ResultRowCount = "executesql.row.count";
+const std::string ExecuteSQL::RESULT_ROW_COUNT = "executesql.row.count";
+const std::string ExecuteSQL::INPUT_FLOW_FILE_UUID = "input.flowfile.uuid";
ExecuteSQL::ExecuteSQL(const std::string& name, utils::Identifier uuid)
- : SQLProcessor(name, uuid), max_rows_(0) {
+ : SQLProcessor(name, uuid, logging::LoggerFactory<ExecuteSQL>::getLogger()) {
}
-ExecuteSQL::~ExecuteSQL() = default;
-
void ExecuteSQL::initialize() {
//! Set the supported properties
- setSupportedProperties({ dbControllerService(), outputFormat(),
s_sqlSelectQuery, s_maxRowsPerFlowFile});
+ setSupportedProperties({ DBControllerService, OutputFormat, SQLSelectQuery,
MaxRowsPerFlowFile});
//! Set the supported relationships
- setSupportedRelationships({ s_success });
+ setSupportedRelationships({ Success });
}
-void ExecuteSQL::processOnSchedule(core::ProcessContext &context) {
- initOutputFormat(context);
+void ExecuteSQL::processOnSchedule(core::ProcessContext& context) {
+ context.getProperty(OutputFormat.getName(), output_format_);
- context.getProperty(s_sqlSelectQuery.getName(), sqlSelectQuery_);
- context.getProperty(s_maxRowsPerFlowFile.getName(), max_rows_);
+ max_rows_ = [&] {
+ uint64_t max_rows;
+ context.getProperty(MaxRowsPerFlowFile.getName(), max_rows);
+ return gsl::narrow<size_t>(max_rows);
+ }();
}
-void ExecuteSQL::processOnTrigger(core::ProcessSession& session) {
- auto statement = connection_->prepareStatement(sqlSelectQuery_);
+void ExecuteSQL::processOnTrigger(core::ProcessContext& context,
core::ProcessSession& session) {
+ auto input_flow_file = session.get();
- auto rowset = statement->execute();
-
- int count = 0;
- size_t rowCount = 0;
- sql::JSONSQLWriter sqlWriter(isJSONPretty());
- sql::SQLRowsetProcessor sqlRowsetProcessor(rowset, { &sqlWriter });
+ std::string query;
+ if (!context.getProperty(SQLSelectQuery, query, input_flow_file)) {
+ if (!input_flow_file) {
+ throw Exception(PROCESSOR_EXCEPTION,
+ "No incoming FlowFile and the \"SQL select query\"
processor property is not specified");
+ }
+ logger_->log_debug("Using the contents of the flow file as the SQL
statement");
+ auto buffer = std::make_shared<io::BufferStream>();
+ InputStreamPipe content_reader{buffer};
+ session.read(input_flow_file, &content_reader);
+ query = std::string{reinterpret_cast<const char *>(buffer->getBuffer()),
buffer->size()};
+ }
+ if (query.empty()) {
+ throw Exception(PROCESSOR_EXCEPTION, "Empty SQL statement");
+ }
+
+ auto row_set =
connection_->prepareStatement(query)->execute(collectArguments(input_flow_file));
+
+ sql::JSONSQLWriter sqlWriter{output_format_ == OutputType::JSONPretty};
Review comment:
done
##########
File path: extensions/sql/processors/ExecuteSQL.cpp
##########
@@ -51,72 +41,87 @@ namespace processors {
const std::string ExecuteSQL::ProcessorName("ExecuteSQL");
-const core::Property ExecuteSQL::s_sqlSelectQuery(
- core::PropertyBuilder::createProperty("SQL select
query")->isRequired(true)->withDescription(
+const core::Property ExecuteSQL::SQLSelectQuery(
+ core::PropertyBuilder::createProperty("SQL select query")
+ ->withDescription(
"The SQL select query to execute. The query can be empty, a constant
value, or built from attributes using Expression Language. "
"If this property is specified, it will be used regardless of the content
of incoming flowfiles. "
"If this property is empty, the content of the incoming flow file is
expected to contain a valid SQL select query, to be issued by the processor to
the database. "
- "Note that Expression Language is not evaluated for flow file
contents.")->supportsExpressionLanguage(true)->build());
+ "Note that Expression Language is not evaluated for flow file contents.")
+ ->supportsExpressionLanguage(true)->build());
-const core::Property ExecuteSQL::s_maxRowsPerFlowFile(
- core::PropertyBuilder::createProperty("Max Rows Per Flow
File")->isRequired(true)->withDefaultValue<int>(0)->withDescription(
- "The maximum number of result rows that will be included intoi a flow
file. If zero then all will be placed into the flow
file")->supportsExpressionLanguage(true)->build());
+const core::Relationship ExecuteSQL::Success("success", "Successfully created
FlowFile from SQL query result set.");
-const core::Relationship ExecuteSQL::s_success("success", "Successfully
created FlowFile from SQL query result set.");
-
-static const std::string ResultRowCount = "executesql.row.count";
+const std::string ExecuteSQL::RESULT_ROW_COUNT = "executesql.row.count";
+const std::string ExecuteSQL::INPUT_FLOW_FILE_UUID = "input.flowfile.uuid";
ExecuteSQL::ExecuteSQL(const std::string& name, utils::Identifier uuid)
- : SQLProcessor(name, uuid), max_rows_(0) {
+ : SQLProcessor(name, uuid, logging::LoggerFactory<ExecuteSQL>::getLogger()) {
}
-ExecuteSQL::~ExecuteSQL() = default;
-
void ExecuteSQL::initialize() {
//! Set the supported properties
- setSupportedProperties({ dbControllerService(), outputFormat(),
s_sqlSelectQuery, s_maxRowsPerFlowFile});
+ setSupportedProperties({ DBControllerService, OutputFormat, SQLSelectQuery,
MaxRowsPerFlowFile});
//! Set the supported relationships
- setSupportedRelationships({ s_success });
+ setSupportedRelationships({ Success });
}
-void ExecuteSQL::processOnSchedule(core::ProcessContext &context) {
- initOutputFormat(context);
+void ExecuteSQL::processOnSchedule(core::ProcessContext& context) {
+ context.getProperty(OutputFormat.getName(), output_format_);
- context.getProperty(s_sqlSelectQuery.getName(), sqlSelectQuery_);
- context.getProperty(s_maxRowsPerFlowFile.getName(), max_rows_);
+ max_rows_ = [&] {
+ uint64_t max_rows;
+ context.getProperty(MaxRowsPerFlowFile.getName(), max_rows);
+ return gsl::narrow<size_t>(max_rows);
+ }();
}
-void ExecuteSQL::processOnTrigger(core::ProcessSession& session) {
- auto statement = connection_->prepareStatement(sqlSelectQuery_);
+void ExecuteSQL::processOnTrigger(core::ProcessContext& context,
core::ProcessSession& session) {
+ auto input_flow_file = session.get();
- auto rowset = statement->execute();
-
- int count = 0;
- size_t rowCount = 0;
- sql::JSONSQLWriter sqlWriter(isJSONPretty());
- sql::SQLRowsetProcessor sqlRowsetProcessor(rowset, { &sqlWriter });
+ std::string query;
+ if (!context.getProperty(SQLSelectQuery, query, input_flow_file)) {
+ if (!input_flow_file) {
+ throw Exception(PROCESSOR_EXCEPTION,
+ "No incoming FlowFile and the \"SQL select query\"
processor property is not specified");
+ }
+ logger_->log_debug("Using the contents of the flow file as the SQL
statement");
+ auto buffer = std::make_shared<io::BufferStream>();
+ InputStreamPipe content_reader{buffer};
+ session.read(input_flow_file, &content_reader);
+ query = std::string{reinterpret_cast<const char *>(buffer->getBuffer()),
buffer->size()};
+ }
+ if (query.empty()) {
+ throw Exception(PROCESSOR_EXCEPTION, "Empty SQL statement");
+ }
+
+ auto row_set =
connection_->prepareStatement(query)->execute(collectArguments(input_flow_file));
+
+ sql::JSONSQLWriter sqlWriter{output_format_ == OutputType::JSONPretty};
+ FlowFileGenerator flow_file_creator{session, sqlWriter};
+ sql::SQLRowsetProcessor sqlRowsetProcessor(row_set, {sqlWriter,
flow_file_creator});
// Process rowset.
- do {
- rowCount = sqlRowsetProcessor.process(max_rows_ == 0 ?
std::numeric_limits<size_t>::max() : max_rows_);
- count++;
- if (rowCount == 0)
- break;
-
- const auto output = sqlWriter.toString();
- if (!output.empty()) {
- WriteCallback writer(output);
- auto newflow = session.create();
- newflow->addAttribute(ResultRowCount, std::to_string(rowCount));
- session.write(newflow, &writer);
- session.transfer(newflow, s_success);
+ while (size_t row_count = sqlRowsetProcessor.process(max_rows_)) {
+ auto new_file = flow_file_creator.getLastFlowFile();
+ new_file->addAttribute(RESULT_ROW_COUNT, std::to_string(row_count));
Review comment:
done
##########
File path: extensions/sql/processors/FlowFileSource.cpp
##########
@@ -0,0 +1,72 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "FlowFileSource.h"
+
+#include "FlowFile.h"
+#include "data/JSONSQLWriter.h"
+
+namespace org {
+namespace apache {
+namespace nifi {
+namespace minifi {
+namespace processors {
+
+const core::Property FlowFileSource::OutputFormat(
+ core::PropertyBuilder::createProperty("Output Format")
+ ->isRequired(true)
+ ->supportsExpressionLanguage(true)
+ ->withDefaultValue(toString(OutputType::JSONPretty))
+ ->withAllowableValues<std::string>(OutputType::values())
+ ->withDescription("Set the output format type.")->build());
+
+const core::Property FlowFileSource::MaxRowsPerFlowFile(
+ core::PropertyBuilder::createProperty("Max Rows Per Flow File")
+ ->isRequired(true)
+ ->supportsExpressionLanguage(true)
+ ->withDefaultValue<uint64_t>(0)
+ ->withDescription(
+ "The maximum number of result rows that will be included in a single
FlowFile. This will allow you to break up very large result sets into multiple
FlowFiles. "
+ "If the value specified is zero, then all rows are returned in a single
FlowFile.")->build());
+
+const std::string FlowFileSource::FRAGMENT_IDENTIFIER = "fragment.identifier";
+const std::string FlowFileSource::FRAGMENT_COUNT = "fragment.count";
+const std::string FlowFileSource::FRAGMENT_INDEX = "fragment.index";
+
+void FlowFileSource::FlowFileGenerator::endProcessBatch(Progress progress) {
+ if (progress == Progress::DONE) {
+ // annotate the flow files with the fragment.count
+ std::string fragment_count = std::to_string(flow_files_.size());
+ for (const auto& flow_file : flow_files_) {
+ flow_file->addAttribute(FRAGMENT_COUNT, fragment_count);
+ }
+ return;
+ }
Review comment:
done
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