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expose websocket electrs API using websocat #6

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expose websocket electrs API using websocat #6

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dd958af
Dockerfile with websocat
louisinger Nov 11, 2022
27eb0d0
add websocat entrypoint.sh script
louisinger Nov 29, 2022
484e39a
add websocat-installer step fetching websocat binaries
louisinger Dec 1, 2022
546ad55
inline install-websocat.sh
louisinger Dec 5, 2022
12228c2
PORT argument in entrypoint.sh
louisinger Dec 6, 2022
2200ba1
add ELECTRUM_PORT env parameter
louisinger Dec 7, 2022
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24 changes: 20 additions & 4 deletions a808b51d0d9301fa82390b985c57551966001f9b/Dockerfile
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Original file line number Diff line number Diff line change
@@ -1,22 +1,38 @@
# Electrs build stage
FROM rust:latest AS builder

ARG COMMIT=253040e346664976c12e6c214ee2858a4dad2e06

ENV WS_PORT=1234
ENV ELECTRUM_PORT=50001

RUN apt-get update
RUN apt-get install -y clang cmake
RUN apt-get install -y clang cmake

RUN git clone https://github.com/blockstream/electrs && cd electrs && git checkout ${COMMIT}

WORKDIR /electrs

RUN cargo build --release --bin electrs

FROM debian:stable-slim AS websocat-installer

RUN apt-get update
RUN apt-get install -y wget

RUN wget https://github.com/vi/websocat/releases/download/v1.11.0/websocat.x86_64-unknown-linux-musl \
&& chmod +x websocat.x86_64-unknown-linux-musl \
&& mv websocat.x86_64-unknown-linux-musl /usr/local/bin/websocat

# Final stage
FROM debian:stable-slim

WORKDIR /build
COPY --from=builder /electrs/target/release/electrs /usr/local/bin
COPY --from=websocat-installer /usr/local/bin/websocat /usr/local/bin

COPY --from=builder /electrs/target/release/electrs /build
COPY entrypoint.sh /entrypoint.sh
RUN chmod +x /entrypoint.sh

STOPSIGNAL SIGINT

ENTRYPOINT ["/build/electrs"]
ENTRYPOINT /entrypoint.sh ${WS_PORT} ${ELECTRUM_PORT}
20 changes: 18 additions & 2 deletions a808b51d0d9301fa82390b985c57551966001f9b/Dockerfile.liquid
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,9 @@ FROM rust:latest AS builder

ARG COMMIT=a808b51d0d9301fa82390b985c57551966001f9b

ENV WS_PORT=1234
ENV ELECTRUM_PORT=50001

RUN apt-get update
RUN apt-get install -y clang cmake

Expand All @@ -11,12 +14,25 @@ WORKDIR /electrs

RUN cargo build --features liquid --release --bin electrs

FROM debian:stable-slim AS websocat-installer

RUN apt-get update
RUN apt-get install -y wget

RUN wget https://github.com/vi/websocat/releases/download/v1.11.0/websocat.x86_64-unknown-linux-musl \
&& chmod +x websocat.x86_64-unknown-linux-musl \
&& mv websocat.x86_64-unknown-linux-musl /usr/local/bin/websocat

FROM debian:stable-slim

WORKDIR /build

COPY --from=builder /electrs/target/release/electrs /build
COPY --from=builder /electrs/target/release/electrs /usr/local/bin
COPY --from=websocat-installer /usr/local/bin/websocat /usr/local/bin

COPY entrypoint.sh /entrypoint.sh
RUN chmod +x /entrypoint.sh

STOPSIGNAL SIGINT

ENTRYPOINT ["/build/electrs"]
ENTRYPOINT /entrypoint.sh ${WS_PORT} ${ELECTRUM_PORT}
16 changes: 16 additions & 0 deletions entrypoint.sh
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Original file line number Diff line number Diff line change
@@ -0,0 +1,16 @@
#!/bin/bash

PORT=$1
ELECTRUM_RPC_PORT=$2

if [ -z "$PORT" ] || [ -z "$ELECTRUM_RPC_PORT" ]; then
echo "Usage: $0 <WS_PORT> <ELECTRUM_RPC_PORT>"
exit 1
fi

echo "Starting websocket server on port $PORT"

set -m
electrs&
websocat -b ws-l:127.0.0.1:$PORT tcp:127.0.0.1:$ELECTRUM_RPC_PORT&
fg %1