/
ProtobufUtils.java
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/
ProtobufUtils.java
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package com.datatonic.gap.GAPPipeline.protobuffer.util;
import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map.Entry;
import java.util.stream.Collectors;
import com.google.api.services.bigquery.model.TableFieldSchema;
import com.google.api.services.bigquery.model.TableRow;
import com.google.api.services.bigquery.model.TableSchema;
import com.google.protobuf.Descriptors.Descriptor;
import com.google.protobuf.Descriptors.FieldDescriptor;
import com.google.protobuf.Message;
import com.google.protobuf.Timestamp;
public class ProtobufUtils {
public static String getFieldType(String in) {
String className = "";
if (in.toLowerCase().equals("boolean")) {
className = "BOOLEAN";
} else if (in.toLowerCase().contains(".string")) {
className = "STRING";
} else if (in.toLowerCase().equals("int") || in.toLowerCase().equals("int32")
|| in.toLowerCase().equals("int64")) {
className = "INTEGER";
} else if (in.toLowerCase().equals("float") || in.toLowerCase().equals("double")) {
className = "FLOAT";
}
return className;
}
public static TableSchema makeTableSchema(Descriptor d) {
TableSchema res = new TableSchema();
List<FieldDescriptor> fields = d.getFields();
List<TableFieldSchema> schema_fields = new ArrayList<TableFieldSchema>();
for (FieldDescriptor f : fields) {
String type = "STRING";
String mode = "NULLABLE";
if (f.isRepeated()) {
mode = "REPEATED";
}
if (f.getType().toString().toUpperCase().contains("BYTES")) {
type = "BYTES";
} else if (f.getType().toString().toUpperCase().contains("INT")) {
type = "INTEGER";
} else if (f.getType().toString().toUpperCase().contains("BOOL")) {
type = "BOOLEAN";
} else if (f.getType().toString().toUpperCase().contains("FLOAT")
|| f.getType().toString().toUpperCase().contains("DOUBLE")) {
type = "FLOAT";
} else if (f.getType().toString().toUpperCase().contains("MESSAGE")) {
type = "RECORD";
TableSchema ts = makeTableSchema(f.getMessageType());
schema_fields.add(new TableFieldSchema().setName(f.getName().replace(".", "_")).setType(type)
.setMode(mode).setFields(ts.getFields()));
}
if (!type.equals("RECORD")) {
schema_fields
.add(new TableFieldSchema().setName(f.getName().replace(".", "_")).setType(type).setMode(mode));
}
}
res.setFields(schema_fields);
return res;
}
public static TableRow makeTableRow(Message message) {
TableRow res = new TableRow();
List<FieldDescriptor> fields = message.getDescriptorForType().getFields();
for (FieldDescriptor f : fields) {
String type = "STRING";
if (!f.isRepeated() && message.hasField(f)) {
if (f.getType().toString().toUpperCase().contains("STRING")) {
res.set(f.getName().replace(".", "_"), String.valueOf(message.getField(f)));
} else if (f.getType().toString().toUpperCase().contains("BYTES")) {
res.set(f.getName().replace(".", "_"), (byte[]) message.getField(f));
} else if (f.getType().toString().toUpperCase().contains("INT32")) {
res.set(f.getName().replace(".", "_"), (int) message.getField(f));
} else if (f.getType().toString().toUpperCase().contains("INT64")) {
res.set(f.getName().replace(".", "_"), (long) message.getField(f));
} else if (f.getType().toString().toUpperCase().contains("BOOL")) {
res.set(f.getName().replace(".", "_"), (boolean) message.getField(f));
} else if (f.getType().toString().toUpperCase().contains("FLOAT")
|| f.getType().toString().toUpperCase().contains("DOUBLE")) {
res.set(f.getName().replace(".", "_"), (double) message.getField(f));
} else if (f.getType().toString().toUpperCase().contains("MESSAGE")) {
type = "RECORD";
if (message.getAllFields().containsKey(f)) {
TableRow tr = makeTableRow((Message) message.getField(f));
res.set(f.getName().replace(".", "_"), tr);
}
}
} else if (f.isRepeated()) {
if (f.getType().toString().toUpperCase().contains("STRING")) {
List<String> values = ((List<Object>) message.getField(f)).stream().map(e -> String.valueOf(e))
.collect(Collectors.toList());
res.set(f.getName().replace(".", "_"), values);
} else if (f.getType().toString().toUpperCase().contains("BYTES")) {
List<byte[]> values = ((List<Object>) message.getField(f)).stream().map(e -> (byte[]) e)
.collect(Collectors.toList());
res.set(f.getName().replace(".", "_"), values);
} else if (f.getType().toString().toUpperCase().contains("INT32")) {
List<Integer> values = ((List<Object>) message.getField(f)).stream().map(e -> (int) e)
.collect(Collectors.toList());
res.set(f.getName().replace(".", "_"), values);
} else if (f.getType().toString().toUpperCase().contains("INT64")) {
List<Long> values = ((List<Object>) message.getField(f)).stream().map(e -> (long) e)
.collect(Collectors.toList());
res.set(f.getName().replace(".", "_"), values);
} else if (f.getType().toString().toUpperCase().contains("BOOL")) {
List<Boolean> values = ((List<Object>) message.getField(f)).stream().map(e -> (boolean) e)
.collect(Collectors.toList());
res.set(f.getName().replace(".", "_"), values);
} else if (f.getType().toString().toUpperCase().contains("FLOAT")
|| f.getType().toString().toUpperCase().contains("DOUBLE")) {
List<Double> values = ((List<Object>) message.getField(f)).stream().map(e -> (double) e)
.collect(Collectors.toList());
res.set(f.getName().replace(".", "_"), values);
} else if (f.getType().toString().toUpperCase().contains("MESSAGE")) {
List<TableRow> values = ((List<Message>) message.getField(f)).stream().map(m -> makeTableRow(m))
.collect(Collectors.toList());
res.set(f.getName().replace(".", "_"), values);
}
}
}
return res;
}
// TODO: check repeated vs nested
// TODO: check naming conventions
public static Message makeMessage(TableRow tablerow, Message.Builder message) {
List<FieldDescriptor> fields = message.getDescriptorForType().getFields();
for (FieldDescriptor f : fields) {
// Object currentField =
// tablerow.get(CaseFormat.UPPER_UNDERSCORE.to(CaseFormat.LOWER_CAMEL,
// f.getName()));
Object currentField = tablerow.get(f.getName());
if (currentField != null) {
if (f.getType().toString().toUpperCase().contains("STRING")) {
message.setField(f, String.valueOf(currentField));
} else if (f.getType().toString().toUpperCase().contains("BYTES")) {
message.setField(f, (String.valueOf(currentField)).getBytes());
} else if (f.getType().toString().toUpperCase().contains("INT32")) {
message.setField(f, Integer.parseInt(String.valueOf(currentField)));
} else if (f.getType().toString().toUpperCase().contains("INT64")) {
message.setField(f, Long.parseLong(String.valueOf(currentField)));
} else if (f.getType().toString().toUpperCase().contains("BOOL")) {
boolean b = Boolean.parseBoolean(String.valueOf(currentField));
message.setField(f, b);
} else if (f.getType().toString().toUpperCase().contains("FLOAT")
|| f.getType().toString().toUpperCase().contains("DOUBLE")) {
message.setField(f, Double.parseDouble(String.valueOf(currentField)));
} else if (f.getType().toString().toUpperCase().contains("MESSAGE")) {
if (f.isRepeated()) {
// if
// (CaseFormat.UPPER_UNDERSCORE.to(CaseFormat.LOWER_CAMEL,
// f.getName()) != null
if (f.getName() != null && ((List<?>) currentField).size() > 0) {
List<Message> m = new ArrayList<Message>();
for (Object o : (List<Object>) currentField) {
if (o.getClass() == TableRow.class) {
m.add(makeMessage((TableRow) o, message.newBuilderForField(f)));
} else {
m.add(makeMessage((parseLinkedHashMapToTableRow((LinkedHashMap<String, Object>) o)),
message.newBuilderForField(f)));
}
}
message.setField(f, m);
}
} else if (tablerow
// .get(CaseFormat.UPPER_UNDERSCORE.to(CaseFormat.LOWER_CAMEL,
// f.getName())) != null) {
.get(f.getName()) != null) {
if (currentField.getClass() != TableRow.class) {
message.setField(f,
makeMessage(
parseLinkedHashMapToTableRow((LinkedHashMap<String, Object>) currentField),
message.newBuilderForField(f)));
} else {
message.setField(f, makeMessage((TableRow) currentField, message.newBuilderForField(f)));
}
}
}
}
}
return message.build();
}
public static Message makeMessage(String csvrow, Message.Builder message) {
List<FieldDescriptor> fields = message.getDescriptorForType().getFields();
String[] csvArray = csvrow.split(",");
for (int i = 0; i < fields.size(); i++) {
FieldDescriptor f = fields.get(i);
String currentField = csvArray[i];
if (currentField != null && currentField.length() > 0) {
// Convention: if name of protobuffer field starts with
// "timestamp", the type in Java will be a Joda Instant
// For now: suppose it's a UNIX timestamp in milliseconds
if (f.getType().toString().toUpperCase().contains("STRING")) {
message.setField(f, String.valueOf(currentField));
} else if (f.getType().toString().toUpperCase().contains("BYTES")) {
message.setField(f, currentField.getBytes());
} else if (f.getType().toString().toUpperCase().contains("INT32")) {
message.setField(f, Integer.parseInt(currentField));
} else if (f.getType().toString().toUpperCase().contains("INT64")) {
message.setField(f, Long.parseLong(currentField));
} else if (f.getType().toString().toUpperCase().contains("BOOL")) {
message.setField(f, Boolean.parseBoolean(currentField));
} else if (f.getType().toString().toUpperCase().contains("FLOAT")) {
message.setField(f, Float.parseFloat(currentField));
} else if (f.getType().toString().toUpperCase().contains("DOUBLE")) {
message.setField(f, Double.parseDouble(currentField));
} else if (f.getType().toString().toUpperCase().contains("MESSAGE")) {
if (f.getMessageType().getName().toUpperCase().contains("TIMESTAMP")) {
message.setField(f, Timestamp.newBuilder().setSeconds(Long.parseLong(currentField) / 1000)
.setNanos((int) ((Long.parseLong(currentField) % 1000) * 1000000)).build());
}
}
}
}
return message.build();
}
public static TableRow parseLinkedHashMapToTableRow(LinkedHashMap<String, Object> input) {
TableRow out = new TableRow();
for (Entry<String, Object> e : input.entrySet()) {
if (e.getValue().getClass() != LinkedHashMap.class && e.getValue().getClass() != TableRow.class) {
out.set(e.getKey(), e.getValue());
} else {
out.set(e.getKey(), parseLinkedHashMapToTableRow((LinkedHashMap<String, Object>) e.getValue()));
}
}
return out;
}
// Rewrite to more general (returning Object instead of List of Objects)
public static Object getValueFromProtobuffer(String field, Message message) {
Object res = null;
String[] fieldHierarchy = field.split("\\.");
FieldDescriptor q = message.getDescriptorForType().findFieldByName(fieldHierarchy[0]);
if (q.isRepeated()) {
if (fieldHierarchy.length > 1) {
List<Message> m = (List<Message>) message.getField(q);
res = m.stream().map(i -> getValueFromProtobuffer(field.substring(fieldHierarchy[0].length() + 1), i))
.collect(Collectors.toList());
} else {
res = (List<Object>) message.getField(q);
}
} else if (message.hasField(q)) {
if (fieldHierarchy.length > 1) {
Message m = (Message) message.getField(q);
res = getValueFromProtobuffer(field.substring(fieldHierarchy[0].length() + 1), m);
} else {
res = message.getField(q);
}
}
return res;
}
public static Message.Builder getBuilderForField(String field, Message.Builder message) {
Message.Builder res = null;
String[] fieldHierarchy = field.split("\\.");
FieldDescriptor q = message.getDescriptorForType().findFieldByName(fieldHierarchy[0]);
if (fieldHierarchy.length > 1) {
res = getBuilderForField(field.substring(fieldHierarchy[0].length() + 1), message.newBuilderForField(q));
} else {
res = message.newBuilderForField(q);
}
return res;
}
public static FieldDescriptor getDescriptorForField(String field, Message.Builder message) {
String[] fieldHierarchy = field.split("\\.");
FieldDescriptor q = message.getDescriptorForType().findFieldByName(fieldHierarchy[0]);
if (fieldHierarchy.length > 1) {
return getDescriptorForField(field.substring(fieldHierarchy[0].length() + 1),
message.newBuilderForField(q));
} else {
return q;
}
}
public static Message.Builder setBuilderForField(String field, Object value, Message.Builder message) {
String[] fieldHierarchy = field.split("\\.");
FieldDescriptor f = message.getDescriptorForType().findFieldByName(fieldHierarchy[0]);
if (value != null) {
if (fieldHierarchy.length > 1) {
if (f.isRepeated()) {
message.addRepeatedField(f, setBuilderForField(field.substring(fieldHierarchy[0].length() + 1),
value, message.newBuilderForField(f)).build());
} else {
message.setField(f, setBuilderForField(field.substring(fieldHierarchy[0].length() + 1), value,
message.newBuilderForField(f)).build());
}
} else {
if (f.isRepeated()) {
message.addRepeatedField(f, value);
} else {
message.setField(f, value);
}
}
}
return message;
}
public static Message.Builder mergeMessage(Message in, Message.Builder out) {
List<FieldDescriptor> fieldsOut = out.getDescriptorForType().getFields();
for (FieldDescriptor f : fieldsOut) {
if (in.getDescriptorForType().getFields().stream().map(m -> m.getName()).collect(Collectors.toList())
.contains(f.getName())
&& f.getType().toString()
.equals(in.getDescriptorForType().findFieldByName(f.getName()).getType().toString())) {
if (f.getType().toString().toUpperCase().contains("MESSAGE")) {
if (f.isRepeated()) {
List<Message> inMessages = (List<Message>) in
.getField(in.getDescriptorForType().findFieldByName(f.getName()));
List<Message> r = new ArrayList<Message>();
for (Message m : inMessages) {
Message toAdd = mergeMessage(m, out.newBuilderForField(f)).build();
r.add(toAdd);
}
out.setField(f, r);
} else {
Message r = mergeMessage(
(Message) in.getField(in.getDescriptorForType().findFieldByName(f.getName())),
((Message) out.getField(f)).newBuilderForType()).build();
out.setField(f, r);
}
} else if (getValueFromProtobuffer(f.getName(), in) != null) {
out.setField(f, getValueFromProtobuffer(f.getName(), in));
}
}
}
return out;
}
}