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Implemented empty methods in LambdaContext #66

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Merged
merged 1 commit into from
Jul 16, 2021
Merged

Implemented empty methods in LambdaContext #66

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116 changes: 78 additions & 38 deletions src/main/java/cloud/localstack/LambdaContext.java
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Original file line number Diff line number Diff line change
Expand Up @@ -5,76 +5,116 @@
import com.amazonaws.services.lambda.runtime.Context;
import com.amazonaws.services.lambda.runtime.LambdaLogger;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;
import java.util.logging.Level;
import java.util.logging.Logger;

public class LambdaContext implements Context {

private final Logger LOG = Logger.getLogger(LambdaContext.class.getName());
private static final int DEFAULT_MEMORY_SIZE_IN_MB = 256;
private static final String DEFAULT_ACCOUNT_ID = "123456789012";
private static final String DEFAULT_REGION = "us-east-1";
private static final String DEFAULT_FUNCTION_NAME = "localstack";
private static final String DEFAULT_FUNCTION_VERSION = "$LATEST";

public LambdaLogger getLogger() {
return new LambdaLogger() {
private static final String TODAY = new SimpleDateFormat("yyyy/MM/dd").format(new Date());
private static final String CONTAINER_ID = UUID.randomUUID().toString();

@Override
public void log(String msg) {
LOG.log(Level.INFO, msg);
}
private final Logger LOG = Logger.getLogger(LambdaContext.class.getName());

@Override
public void log(byte[] msg) {
log(new String(msg));
}
};
}
private final String requestId;

public String getAwsRequestId() {
// TODO Auto-generated method stub
return null;
public LambdaContext(String requestId) {
this.requestId = requestId;
}

public ClientContext getClientContext() {
// TODO Auto-generated method stub
return null;
@Override
public String getAwsRequestId() {
return requestId;
}

@Override
public String getFunctionName() {
// TODO Auto-generated method stub
return null;
String functionName = System.getenv("AWS_LAMBDA_FUNCTION_NAME");
if (functionName == null) {
functionName = DEFAULT_FUNCTION_NAME;
}
return functionName;
}

@Override
public String getFunctionVersion() {
// TODO Auto-generated method stub
return null;
}

public CognitoIdentity getIdentity() {
// TODO Auto-generated method stub
return null;
String functionVersion = System.getenv("AWS_LAMBDA_FUNCTION_VERSION");
if (functionVersion == null) {
functionVersion = DEFAULT_FUNCTION_VERSION;
}
return functionVersion;
}

@Override
public String getInvokedFunctionArn() {
// TODO Auto-generated method stub
return null;
String region = System.getenv("AWS_REGION");
if (region == null) {
region = DEFAULT_REGION;
}
return String.format("arn:aws:%s:%s:function:%s:%s",
region, DEFAULT_ACCOUNT_ID, getFunctionName(), getFunctionVersion());
}

@Override
public String getLogGroupName() {
// TODO Auto-generated method stub
return null;
return String.format("/aws/lambda/%s", getFunctionName());
}

@Override
public String getLogStreamName() {
// TODO Auto-generated method stub
return null;
return String.format("%s[%s]%s", TODAY, getFunctionVersion(), CONTAINER_ID);
}

@Override
public int getMemoryLimitInMB() {
// TODO Auto-generated method stub
return 0;
String memorySize = System.getenv("AWS_LAMBDA_FUNCTION_MEMORY_SIZE");
if (memorySize == null) {
return DEFAULT_MEMORY_SIZE_IN_MB;
} else {
try {
return Integer.parseInt(memorySize);
} catch (NumberFormatException e) {
return DEFAULT_MEMORY_SIZE_IN_MB;
}
}
}

@Override
public int getRemainingTimeInMillis() {
// TODO Auto-generated method stub
return 0;
return Integer.MAX_VALUE;
}

@Override
public LambdaLogger getLogger() {
return new LambdaLogger() {
@Override
public void log(String msg) {
LOG.log(Level.INFO, msg);
}

@Override
public void log(byte[] msg) {
log(new String(msg));
}
};
}

@Override
public ClientContext getClientContext() {
return null;
}

@Override
public CognitoIdentity getIdentity() {
return null;
}

}
3 changes: 2 additions & 1 deletion src/main/java/cloud/localstack/LambdaExecutor.java
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,7 @@
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.UUID;
import java.util.stream.Collectors;

/**
Expand Down Expand Up @@ -89,7 +90,7 @@ public static void main(String[] args) throws Exception {
}
}

Context ctx = new LambdaContext();
Context ctx = new LambdaContext(UUID.randomUUID().toString());
if (handler instanceof RequestHandler) {
Object result = ((RequestHandler<Object, ?>) handler).handleRequest(inputObject, ctx);
// try turning the output into json
Expand Down