I am trying to dockerize 4 services and I have a problem with one of the services. Particularly, this service is implemented is spring boot service and uses google vision API. When building the images and starting the containers everything works fine, until it gets to the part where the google vision API code is used. I then have the following runtime errors when running the containers:
netty-tcnative unavailable (this may be normal)
java.lang.IllegalArgumentException: Failed to load any of the given libraries: [netty_tcnative_linux_x86_64, netty_tcnative_linux_x86_64_fedora, netty_tcnative_x86_64, netty_tcnative]
at io.grpc.netty.shaded.io.netty.util.internal.NativeLibraryLoader.loadFirstAvailable(NativeLibraryLoader.java:104) ~[grpc-netty-shaded-1.18.0.jar!/:1.18.0]
at io.grpc.netty.shaded.io.netty.handler.ssl.OpenSsl.loadTcNative(OpenSsl.java:526) ~[grpc-netty-shaded-1.18.0.jar!/:1.18.0]
at io.grpc.netty.shaded.io.netty.handler.ssl.OpenSsl.<clinit>(OpenSsl.java:93) ~[grpc-netty-shaded-1.18.0.jar!/:1.18.0]
at io.grpc.netty.shaded.io.grpc.netty.GrpcSslContexts.defaultSslProvider(GrpcSslContexts.java:244) [grpc-netty-shaded-1.18.0.jar!/:1.18.0]
at io.grpc.netty.shaded.io.grpc.netty.GrpcSslContexts.configure(GrpcSslContexts.java:171) [grpc-netty-shaded-1.18.0.jar!/:1.18.0]
at io.grpc.netty.shaded.io.grpc.netty.GrpcSslContexts.forClient(GrpcSslContexts.java:120) [grpc-netty-shaded-1.18.0.jar!/:1.18.0]
at io.grpc.netty.shaded.io.grpc.netty.NettyChannelBuilder.buildTransportFactory(NettyChannelBuilder.java:385) [grpc-netty-shaded-1.18.0.jar!/:1.18.0]
at io.grpc.internal.AbstractManagedChannelImplBuilder.build(AbstractManagedChannelImplBuilder.java:435) [grpc-core-1.18.0.jar!/:1.18.0]
at com.google.api.gax.grpc.InstantiatingGrpcChannelProvider.createSingleChannel(InstantiatingGrpcChannelProvider.java:223) [gax-grpc-1.42.0.jar!/:1.42.0]
at com.google.api.gax.grpc.InstantiatingGrpcChannelProvider.createChannel(InstantiatingGrpcChannelProvider.java:164) [gax-grpc-1.42.0.jar!/:1.42.0]
at com.google.api.gax.grpc.InstantiatingGrpcChannelProvider.getTransportChannel(InstantiatingGrpcChannelProvider.java:156) [gax-grpc-1.42.0.jar!/:1.42.0]
at com.google.api.gax.rpc.ClientContext.create(ClientContext.java:157) [gax-1.42.0.jar!/:1.42.0]
at com.google.cloud.vision.v1.stub.GrpcImageAnnotatorStub.create(GrpcImageAnnotatorStub.java:84) [google-cloud-vision-1.66.0.jar!/:1.66.0]
at com.google.cloud.vision.v1.stub.ImageAnnotatorStubSettings.createStub(ImageAnnotatorStubSettings.java:120) [google-cloud-vision-1.66.0.jar!/:1.66.0]
at com.google.cloud.vision.v1.ImageAnnotatorClient.<init>(ImageAnnotatorClient.java:136) [google-cloud-vision-1.66.0.jar!/:na]
at com.google.cloud.vision.v1.ImageAnnotatorClient.create(ImageAnnotatorClient.java:117) [google-cloud-vision-1.66.0.jar!/:na]
at com.google.cloud.vision.v1.ImageAnnotatorClient.create(ImageAnnotatorClient.java:108) [google-cloud-vision-1.66.0.jar!/:na]
Complete log file of the error can be found in this link: Complete Log File.
Here are my docker-compose.yml file and the Dockerfile of the service causing problem:
DockerFile
FROM maven:3.6.0-jdk-8-alpine
WORKDIR /app/back
COPY src src
COPY pom.xml .
RUN mvn clean package
FROM openjdk:8-jdk-alpine
RUN apk add --no-cache curl
WORKDIR /app/back
COPY --from=0 /app/back/target/imagescanner*.jar ./imagescanner.jar
COPY --from=0 /app/back/target/classes/API-Key.json .
ENV GOOGLE_APPLICATION_CREDENTIALS ./API-Key.json
EXPOSE 8088
ENTRYPOINT ["java", "-jar", "./imagescanner.jar"]
docker-compose.yml
version: '3'
services:
front:
container_name: demoLab_front
build: ./front
image: demolab/front:latest
expose:
- "3000"
ports:
- "8087:3000"
restart: always
back:
container_name: demoLab_backGCV
build: ./backGCV
image: demolab/backgcv:latest
depends_on:
- lab
ports:
- "8088:8088"
restart: always
lab:
container_name: demoLab_labGCV
build: ./lab
image: demolab/labgcv:latest
expose:
- "8089"
ports:
- "8089:8089"
restart: always
sift:
container_name: demoLab_labSIFT
build: ./detect-label-service
image: demolab/labsift:latest
expose:
- "5000"
ports:
- "5000:5000"
restart: always
EDIT
After some googling I found out that: GRPC Java examples are not working on Alpine Linux since required libnetty-tcnative-boringssl-static depends on glibc. Alpine is using musl libc and application startup will fail with message similar to mine. I found this project that try to build the right images but it seems broken for a lot of pepole (the build didn't work for my case)
