diff --git a/.dockerignore b/.dockerignore new file mode 100644 index 0000000..e69de29 diff --git a/.env.sample b/.env.sample new file mode 100644 index 0000000..e69de29 diff --git a/.github/workflows/docker_image.yml b/.github/workflows/docker_image.yml new file mode 100644 index 0000000..2c7ca78 --- /dev/null +++ b/.github/workflows/docker_image.yml @@ -0,0 +1,10 @@ +on: + push: + branches: + - main + +name: Publish Image + +jobs: + image: + uses: orbservability/.github/.github/workflows/publish_image.yml@main diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..bac9475 --- /dev/null +++ b/.gitignore @@ -0,0 +1,33 @@ +.DS_Store + +# Ignore node files +node_modules +dist +.cache + +# Ignore editor workspace files +.vscode +.sublime-* +.atom +.editorconfig +.idea +.nyc_output +coverage +*.lcov +*.swp +*.swo + +# Ignore all logfiles and tempfiles. +/log/* +/tmp/* +!/log/.keep +!/tmp/.keep + +# Ignore version control +.tool-versions +.*-version + +# Ignore env +/.env +.env.local +compose.override.yml diff --git a/Dockerfile b/Dockerfile new file mode 100644 index 0000000..2b8fafc --- /dev/null +++ b/Dockerfile @@ -0,0 +1,51 @@ +# First stage: build the executable. +# Start from the official Go image to create a build artifact. +# This is based on Debian and includes standard C libraries. +FROM golang:1.21 AS builder + +# Set the working directory outside $GOPATH to enable the support for modules. +WORKDIR /usr/src/app + +# Copy the Go Modules manifests and download the dependencies. +# This is done before copying the code to leverage Docker cache layers. +COPY go.* ./ +RUN go mod download + +# Copy the source code from the current directory to the working directory inside the container. +COPY . . + +# Build the binary with full module support and without Cgo. +# Compile the binary statically including all dependencies. +RUN CGO_ENABLED=0 GOOS=linux go build -mod=readonly -a -installsuffix cgo -o /go/bin/main . + +# Second stage: build the runtime container. +# Start from a scratch image, which is an empty container. +FROM scratch AS runtime + +WORKDIR /usr/src/app + +# Create a non-root user and group with the user ID and group ID set to 10001 +COPY --from=builder /etc/passwd /etc/group /etc/ +RUN addgroup --system --gid 10001 nonroot && \ + adduser --system --uid 10001 --ingroup nonroot nonroot + +# Import the Certificate-Authority certificates for enabling HTTPS. +# This is important for applications that make external HTTPS calls. +COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ + +# Import the compiled binary from the first stage. +COPY --from=builder /go/bin/main . + +# Use the nonroot user to run the application +USER nonroot:nonroot + +# Declare the environment variable for the application. +# For example, setting the port where the application will run. +# ENV PORT=8080 + +# Expose the application on port 8080. +# EXPOSE $PORT + +# Define the entry point for the docker image. +# This is the command that will be run when the container starts. +ENTRYPOINT ["/usr/src/app/main"] diff --git a/README.md b/README.md new file mode 100644 index 0000000..5a4490e --- /dev/null +++ b/README.md @@ -0,0 +1,17 @@ +# Observer + +Streams data sources to stdout. + +## Usage + +```sh +docker compose build +docker compose run --rm go mod tidy +``` + +## Reading + +Learn about the various tech powering this application: + +- [Pixie](https://docs.px.dev/about-pixie/what-is-pixie/) +- [eBPF](https://ebpf.io/) diff --git a/compose.yml b/compose.yml new file mode 100644 index 0000000..ecaed64 --- /dev/null +++ b/compose.yml @@ -0,0 +1,17 @@ +services: + go: &go + env_file: .env + tty: true + stdin_open: true + build: + context: . + target: builder + entrypoint: go + command: help + volumes: + - .:/usr/src/app:delegated + - gomod:/go/pkg/mod + - ${LOCAL_DEP_PATH:-..}:/local + +volumes: + gomod: {} diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..e84cd4a --- /dev/null +++ b/go.mod @@ -0,0 +1,27 @@ +module orbservability/observer + +go 1.21 + +require px.dev/pxapi v0.5.0 + +require ( + github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.0-20210816181553-5444fa50b93d // indirect + github.com/goccy/go-json v0.10.0 // indirect + github.com/gofrs/uuid v4.0.0+incompatible // indirect + github.com/gogo/protobuf v1.3.2 // indirect + github.com/golang/protobuf v1.5.2 // indirect + github.com/lestrrat-go/backoff/v2 v2.0.8 // indirect + github.com/lestrrat-go/blackmagic v1.0.0 // indirect + github.com/lestrrat-go/httpcc v1.0.0 // indirect + github.com/lestrrat-go/iter v1.0.1 // indirect + github.com/lestrrat-go/jwx v1.2.17 // indirect + github.com/lestrrat-go/option v1.0.0 // indirect + github.com/pkg/errors v0.9.1 // indirect + golang.org/x/crypto v0.0.0-20220926161630-eccd6366d1be // indirect + golang.org/x/net v0.8.0 // indirect + golang.org/x/sys v0.6.0 // indirect + golang.org/x/text v0.8.0 // indirect + google.golang.org/genproto v0.0.0-20211208223120-3a66f561d7aa // indirect + google.golang.org/grpc v1.43.0 // indirect + google.golang.org/protobuf v1.28.1 // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..267b77f --- /dev/null +++ b/go.sum @@ -0,0 +1,197 @@ +cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= +github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU= +github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY= +github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU= +github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc= +github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs= +github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw= +github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc= +github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk= +github.com/cncf/udpa/go v0.0.0-20210930031921-04548b0d99d4/go.mod h1:6pvJx4me5XPnfI9Z40ddWsdw2W/uZgQLFXToKeRcDiI= +github.com/cncf/xds/go v0.0.0-20210312221358-fbca930ec8ed/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs= +github.com/cncf/xds/go v0.0.0-20210805033703-aa0b78936158/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs= +github.com/cncf/xds/go v0.0.0-20210922020428-25de7278fc84/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs= +github.com/cncf/xds/go v0.0.0-20211011173535-cb28da3451f1/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs= +github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/davecgh/go-spew v1.1.1 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h1:j8pDW72/5mhm+f8f0MVTp1goEwBP11N83BxLrOyq+kw= diff --git a/main.go b/main.go new file mode 100644 index 0000000..5925778 --- /dev/null +++ b/main.go @@ -0,0 +1,93 @@ +package main + +import ( + "context" + "fmt" + "io" + + "px.dev/pxapi" + "px.dev/pxapi/errdefs" + "px.dev/pxapi/types" +) + +// Define PxL script with one table output. +var ( + pxl = ` +import px + +# Look at the http_events. +df = px.DataFrame(table='http_events') + +# Grab the command line from the metadata. +df.cmdline = px.upid_to_cmdline(df.upid) + +# Limit to the first 10. +df = df.head(10) + +px.display(df)` +) + +func main() { + // Create a Pixie client with local standalonePEM listening address + ctx := context.Background() + client, err := pxapi.NewClient( + ctx, + pxapi.WithDirectAddr("127.0.0.1:12345"), + pxapi.WithDirectCredsInsecure(), + ) + if err != nil { + panic(err) + } + // Create a connection to the host. + hostID := "localhost" + vz, err := client.NewVizierClient(ctx, hostID) + if err != nil { + panic(err) + } + // Create TableMuxer to accept results table. + tm := &tableMux{} + // Execute the PxL script. + resultSet, err := vz.ExecuteScript(ctx, pxl, tm) + if err != nil && err != io.EOF { + panic(err) + } + // Receive the PxL script results. + defer resultSet.Close() + if err := resultSet.Stream(); err != nil { + if errdefs.IsCompilationError(err) { + fmt.Printf("Got compiler error: \n %s\n", err.Error()) + } else { + fmt.Printf("Got error : %+v, while streaming\n", err) + } + } + // Get the execution stats for the script execution. + stats := resultSet.Stats() + fmt.Printf("Execution Time: %v\n", stats.ExecutionTime) + fmt.Printf("Bytes received: %v\n", stats.TotalBytes) +} + +// Satisfies the TableRecordHandler interface. +type tablePrinter struct{} + +func (t *tablePrinter) HandleInit(ctx context.Context, metadata types.TableMetadata) error { + return nil +} +func (t *tablePrinter) HandleRecord(ctx context.Context, r *types.Record) error { + for _, d := range r.Data { + fmt.Printf("%s ", d.String()) + } + fmt.Printf("\n") + return nil +} + +func (t *tablePrinter) HandleDone(ctx context.Context) error { + return nil +} + +// Satisfies the TableMuxer interface. +type tableMux struct { +} + +func (s *tableMux) AcceptTable(ctx context.Context, metadata types.TableMetadata) (pxapi.TableRecordHandler, error) { + return &tablePrinter{}, nil +} diff --git a/tools.go b/tools.go new file mode 100644 index 0000000..ae824ea --- /dev/null +++ b/tools.go @@ -0,0 +1,3 @@ +//go:build tools + +package tools