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pull/21316/head
Muxi Yan 5 years ago
parent 264d71be4c
commit c0b85e5a46
1 changed files with 78 additions and 65 deletions
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  1. 143
      examples/objective-c/route_guide/ViewControllers.m

143
examples/objective-c/route_guide/ViewControllers.m
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@ -25,7 +25,7 @@
#import <GRPCClient/GRPCTransport.h> #import <GRPCClient/GRPCTransport.h>
static NSString * const kHostAddress = @"localhost:50051"; static NSString *const kHostAddress = @"localhost:50051";
/** Category to override RTGPoint's description. */ /** Category to override RTGPoint's description. */
@interface RTGPoint (Description) @interface RTGPoint (Description)
@ -36,9 +36,9 @@ static NSString * const kHostAddress = @"localhost:50051";
- (NSString *)description { - (NSString *)description {
NSString *verticalDirection = self.latitude >= 0 ? @"N" : @"S"; NSString *verticalDirection = self.latitude >= 0 ? @"N" : @"S";
NSString *horizontalDirection = self.longitude >= 0 ? @"E" : @"W"; NSString *horizontalDirection = self.longitude >= 0 ? @"E" : @"W";
return [NSString stringWithFormat:@"%.02f%@ %.02f%@", return
abs(self.latitude) / 1E7f, verticalDirection, [NSString stringWithFormat:@"%.02f%@ %.02f%@", abs(self.latitude) / 1E7f, verticalDirection,
abs(self.longitude) / 1E7f, horizontalDirection]; abs(self.longitude) / 1E7f, horizontalDirection];
} }
@end @end
@ -55,13 +55,12 @@ static NSString * const kHostAddress = @"localhost:50051";
longitude:(float)longitude { longitude:(float)longitude {
RTGRouteNote *note = [self message]; RTGRouteNote *note = [self message];
note.message = message; note.message = message;
note.location.latitude = (int32_t) latitude * 1E7; note.location.latitude = (int32_t)latitude * 1E7;
note.location.longitude = (int32_t) longitude * 1E7; note.location.longitude = (int32_t)longitude * 1E7;
return note; return note;
} }
@end @end
#pragma mark Demo: Get Feature #pragma mark Demo: Get Feature
/** /**
@ -70,7 +69,7 @@ static NSString * const kHostAddress = @"localhost:50051";
*/ */
@interface GetFeatureViewController : UIViewController @interface GetFeatureViewController : UIViewController
@property (weak, nonatomic) IBOutlet UILabel *outputLabel; @property(weak, nonatomic) IBOutlet UILabel *outputLabel;
@end @end
@ -82,15 +81,19 @@ static NSString * const kHostAddress = @"localhost:50051";
void (^handler)(RTGFeature *response, NSError *error) = ^(RTGFeature *response, NSError *error) { void (^handler)(RTGFeature *response, NSError *error) = ^(RTGFeature *response, NSError *error) {
// TODO(makdharma): Remove boilerplate by consolidating into one log function. // TODO(makdharma): Remove boilerplate by consolidating into one log function.
if (response.name.length) { if (response.name.length) {
NSString *str =[NSString stringWithFormat:@"%@\nFound feature called %@ at %@.", self.outputLabel.text, response.location, response.name]; NSString *str =
[NSString stringWithFormat:@"%@\nFound feature called %@ at %@.", self.outputLabel.text,
response.location, response.name];
self.outputLabel.text = str; self.outputLabel.text = str;
NSLog(@"Found feature called %@ at %@.", response.name, response.location); NSLog(@"Found feature called %@ at %@.", response.name, response.location);
} else if (response) { } else if (response) {
NSString *str =[NSString stringWithFormat:@"%@\nFound no features at %@", self.outputLabel.text,response.location]; NSString *str = [NSString stringWithFormat:@"%@\nFound no features at %@",
self.outputLabel.text, response.location];
self.outputLabel.text = str; self.outputLabel.text = str;
NSLog(@"Found no features at %@", response.location); NSLog(@"Found no features at %@", response.location);
} else { } else {
NSString *str =[NSString stringWithFormat:@"%@\nRPC error: %@", self.outputLabel.text, error]; NSString *str =
[NSString stringWithFormat:@"%@\nRPC error: %@", self.outputLabel.text, error];
self.outputLabel.text = str; self.outputLabel.text = str;
NSLog(@"RPC error: %@", error); NSLog(@"RPC error: %@", error);
} }
@ -100,15 +103,18 @@ static NSString * const kHostAddress = @"localhost:50051";
point.latitude = 409146138; point.latitude = 409146138;
point.longitude = -746188906; point.longitude = -746188906;
GRPCUnaryProtoCall *call = [_service getFeatureWithMessage:point GRPCUnaryProtoCall *call = [_service
responseHandler:[[GRPCUnaryResponseHandler alloc] initWithResponseHandler:handler responseDispatchQueue:nil] getFeatureWithMessage:point
callOptions:nil]; responseHandler:[[GRPCUnaryResponseHandler alloc] initWithResponseHandler:handler
responseDispatchQueue:nil]
callOptions:nil];
[call start]; [call start];
call = [_service getFeatureWithMessage:[RTGPoint message] call = [_service
responseHandler:[[GRPCUnaryResponseHandler alloc] initWithResponseHandler:handler responseDispatchQueue:nil] getFeatureWithMessage:[RTGPoint message]
callOptions:nil]; responseHandler:[[GRPCUnaryResponseHandler alloc] initWithResponseHandler:handler
responseDispatchQueue:nil]
callOptions:nil];
[call start]; [call start];
} }
- (void)viewDidLoad { - (void)viewDidLoad {
@ -129,16 +135,15 @@ static NSString * const kHostAddress = @"localhost:50051";
@end @end
#pragma mark Demo: List Features #pragma mark Demo: List Features
/** /**
* Run the listFeatures demo. Calls listFeatures with a rectangle containing all of the features in * Run the listFeatures demo. Calls listFeatures with a rectangle containing all of the features in
* the pre-generated database. Prints each response as it comes in. * the pre-generated database. Prints each response as it comes in.
*/ */
@interface ListFeaturesViewController : UIViewController<GRPCProtoResponseHandler> @interface ListFeaturesViewController : UIViewController <GRPCProtoResponseHandler>
@property (weak, nonatomic) IBOutlet UILabel *outputLabel; @property(weak, nonatomic) IBOutlet UILabel *outputLabel;
@end @end
@ -167,7 +172,9 @@ static NSString * const kHostAddress = @"localhost:50051";
- (void)didReceiveProtoMessage:(GPBMessage *)message { - (void)didReceiveProtoMessage:(GPBMessage *)message {
RTGFeature *response = (RTGFeature *)message; RTGFeature *response = (RTGFeature *)message;
if (response) { if (response) {
NSString *str =[NSString stringWithFormat:@"%@\nFound feature at %@ called %@.", self.outputLabel.text, response.location, response.name]; NSString *str =
[NSString stringWithFormat:@"%@\nFound feature at %@ called %@.", self.outputLabel.text,
response.location, response.name];
self.outputLabel.text = str; self.outputLabel.text = str;
NSLog(@"Found feature at %@ called %@.", response.location, response.name); NSLog(@"Found feature at %@ called %@.", response.location, response.name);
} }
@ -175,7 +182,7 @@ static NSString * const kHostAddress = @"localhost:50051";
- (void)didCloseWithTrailingMetadata:(NSDictionary *)trailingMetadata error:(NSError *)error { - (void)didCloseWithTrailingMetadata:(NSDictionary *)trailingMetadata error:(NSError *)error {
if (error) { if (error) {
NSString *str =[NSString stringWithFormat:@"%@\nRPC error: %@", self.outputLabel.text, error]; NSString *str = [NSString stringWithFormat:@"%@\nRPC error: %@", self.outputLabel.text, error];
self.outputLabel.text = str; self.outputLabel.text = str;
NSLog(@"RPC error: %@", error); NSLog(@"RPC error: %@", error);
} }
@ -208,7 +215,7 @@ static NSString * const kHostAddress = @"localhost:50051";
*/ */
@interface RecordRouteViewController : UIViewController @interface RecordRouteViewController : UIViewController
@property (weak, nonatomic) IBOutlet UILabel *outputLabel; @property(weak, nonatomic) IBOutlet UILabel *outputLabel;
@end @end
@ -217,11 +224,12 @@ static NSString * const kHostAddress = @"localhost:50051";
} }
- (void)execRequest { - (void)execRequest {
NSString *dataBasePath = [NSBundle.mainBundle pathForResource:@"route_guide_db" NSString *dataBasePath = [NSBundle.mainBundle pathForResource:@"route_guide_db" ofType:@"json"];
ofType:@"json"];
NSData *dataBaseContent = [NSData dataWithContentsOfFile:dataBasePath]; NSData *dataBaseContent = [NSData dataWithContentsOfFile:dataBasePath];
NSError *error; NSError *error;
NSArray *features = [NSJSONSerialization JSONObjectWithData:dataBaseContent options:0 error:&error]; NSArray *features = [NSJSONSerialization JSONObjectWithData:dataBaseContent
options:0
error:&error];
if (error) { if (error) {
NSLog(@"Error reading database."); NSLog(@"Error reading database.");
@ -230,34 +238,39 @@ static NSString * const kHostAddress = @"localhost:50051";
return; return;
} }
void (^handler)(RTGRouteSummary *response, NSError *error) = ^(RTGRouteSummary *response, NSError *error) { void (^handler)(RTGRouteSummary *response, NSError *error) =
if (response) { ^(RTGRouteSummary *response, NSError *error) {
NSString *str =[NSString stringWithFormat: if (response) {
@"%@\nFinished trip with %i points\nPassed %i features\n" NSString *str = [NSString
"Travelled %i meters\nIt took %i seconds", stringWithFormat:@"%@\nFinished trip with %i points\nPassed %i features\n"
self.outputLabel.text, response.pointCount, response.featureCount, "Travelled %i meters\nIt took %i seconds",
response.distance, response.elapsedTime]; self.outputLabel.text, response.pointCount, response.featureCount,
self.outputLabel.text = str; response.distance, response.elapsedTime];
NSLog(@"Finished trip with %i points", response.pointCount); self.outputLabel.text = str;
NSLog(@"Passed %i features", response.featureCount); NSLog(@"Finished trip with %i points", response.pointCount);
NSLog(@"Travelled %i meters", response.distance); NSLog(@"Passed %i features", response.featureCount);
NSLog(@"It took %i seconds", response.elapsedTime); NSLog(@"Travelled %i meters", response.distance);
} else { NSLog(@"It took %i seconds", response.elapsedTime);
NSString *str =[NSString stringWithFormat:@"%@\nRPC error: %@", self.outputLabel.text, error]; } else {
self.outputLabel.text = str; NSString *str =
NSLog(@"RPC error: %@", error); [NSString stringWithFormat:@"%@\nRPC error: %@", self.outputLabel.text, error];
} self.outputLabel.text = str;
}; NSLog(@"RPC error: %@", error);
}
GRPCStreamingProtoCall *call = [_service recordRouteWithResponseHandler:[[GRPCUnaryResponseHandler alloc] initWithResponseHandler:handler };
responseDispatchQueue:nil]
callOptions:nil]; GRPCStreamingProtoCall *call =
[_service recordRouteWithResponseHandler:[[GRPCUnaryResponseHandler alloc]
initWithResponseHandler:handler
responseDispatchQueue:nil]
callOptions:nil];
[call start]; [call start];
for (id feature in features) { for (id feature in features) {
RTGPoint *location = [RTGPoint message]; RTGPoint *location = [RTGPoint message];
location.longitude = [((NSNumber *) feature[@"location"][@"longitude"]) intValue]; location.longitude = [((NSNumber *)feature[@"location"][@"longitude"]) intValue];
location.latitude = [((NSNumber *) feature[@"location"][@"latitude"]) intValue]; location.latitude = [((NSNumber *)feature[@"location"][@"latitude"]) intValue];
NSString *str =[NSString stringWithFormat:@"%@\nVisiting point %@", self.outputLabel.text, location]; NSString *str =
[NSString stringWithFormat:@"%@\nVisiting point %@", self.outputLabel.text, location];
self.outputLabel.text = str; self.outputLabel.text = str;
NSLog(@"Visiting point %@", location); NSLog(@"Visiting point %@", location);
[call writeMessage:location]; [call writeMessage:location];
@ -283,16 +296,15 @@ static NSString * const kHostAddress = @"localhost:50051";
@end @end
#pragma mark Demo: Route Chat #pragma mark Demo: Route Chat
/** /**
* Run the routeChat demo. Send some chat messages, and print any chat messages that are sent from * Run the routeChat demo. Send some chat messages, and print any chat messages that are sent from
* the server. * the server.
*/ */
@interface RouteChatViewController : UIViewController<GRPCProtoResponseHandler> @interface RouteChatViewController : UIViewController <GRPCProtoResponseHandler>
@property (weak, nonatomic) IBOutlet UILabel *outputLabel; @property(weak, nonatomic) IBOutlet UILabel *outputLabel;
@end @end
@ -305,13 +317,14 @@ static NSString * const kHostAddress = @"localhost:50051";
} }
- (void)execRequest { - (void)execRequest {
NSArray *notes = @[[RTGRouteNote noteWithMessage:@"First message" latitude:0 longitude:0], NSArray *notes = @[
[RTGRouteNote noteWithMessage:@"Second message" latitude:0 longitude:1], [RTGRouteNote noteWithMessage:@"First message" latitude:0 longitude:0],
[RTGRouteNote noteWithMessage:@"Third message" latitude:1 longitude:0], [RTGRouteNote noteWithMessage:@"Second message" latitude:0 longitude:1],
[RTGRouteNote noteWithMessage:@"Fourth message" latitude:0 longitude:0]]; [RTGRouteNote noteWithMessage:@"Third message" latitude:1 longitude:0],
[RTGRouteNote noteWithMessage:@"Fourth message" latitude:0 longitude:0]
GRPCStreamingProtoCall *call = [_service routeChatWithResponseHandler:self ];
callOptions:nil];
GRPCStreamingProtoCall *call = [_service routeChatWithResponseHandler:self callOptions:nil];
[call start]; [call start];
for (RTGRouteNote *note in notes) { for (RTGRouteNote *note in notes) {
[call writeMessage:note]; [call writeMessage:note];
@ -322,8 +335,8 @@ static NSString * const kHostAddress = @"localhost:50051";
- (void)didReceiveProtoMessage:(GPBMessage *)message { - (void)didReceiveProtoMessage:(GPBMessage *)message {
RTGRouteNote *note = (RTGRouteNote *)message; RTGRouteNote *note = (RTGRouteNote *)message;
if (note) { if (note) {
NSString *str =[NSString stringWithFormat:@"%@\nGot message %@ at %@", NSString *str = [NSString stringWithFormat:@"%@\nGot message %@ at %@", self.outputLabel.text,
self.outputLabel.text, note.message, note.location]; note.message, note.location];
self.outputLabel.text = str; self.outputLabel.text = str;
NSLog(@"Got message %@ at %@", note.message, note.location); NSLog(@"Got message %@ at %@", note.message, note.location);
} }
@ -333,7 +346,7 @@ static NSString * const kHostAddress = @"localhost:50051";
if (!error) { if (!error) {
NSLog(@"Chat ended."); NSLog(@"Chat ended.");
} else { } else {
NSString *str =[NSString stringWithFormat:@"%@\nRPC error: %@", self.outputLabel.text, error]; NSString *str = [NSString stringWithFormat:@"%@\nRPC error: %@", self.outputLabel.text, error];
self.outputLabel.text = str; self.outputLabel.text = str;
NSLog(@"RPC error: %@", error); NSLog(@"RPC error: %@", error);
} }

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