Add opentelemetry-api package

Author: ethercrow

Diff for: .github/workflows/ci.yml

@@ -17,6 +17,12 @@ jobs:
       with:
         ghc-version: ${{ matrix.ghc }}
         cabal-version: '3.0'
+    - name: Update cabal package database
+      run: cabal update
+    - name: Build
+      run: |
+        cd opentelemetry-api
+        cabal build -f examples
 
   linux-stack-lts-14:
     runs-on: ubuntu-18.04
@@ -27,6 +33,12 @@ jobs:
     - uses: actions/checkout@v1
     - name: Install stack
       run: which stack || curl -sSL https://get.haskellstack.org/ | sh
+    - name: Install GHC
+      run: |
+        stack setup --stack-yaml ${{ matrix.stack-yaml }}
+    - name: Build
+      run: |
+        stack build --fast --stack-yaml ${{ matrix.stack-yaml }}
 
   macos-stack-lts-14:
     runs-on: macOS-latest
@@ -37,3 +49,9 @@ jobs:
     - uses: actions/checkout@v1
     - name: Install stack
       run: which stack || curl -sSL https://get.haskellstack.org/ | sh
+    - name: Install GHC
+      run: |
+        stack setup --stack-yaml ${{ matrix.stack-yaml }}
+    - name: Build
+      run: |
+        stack build --fast --stack-yaml ${{ matrix.stack-yaml }}

Diff for: CHANGELOG.md

@@ -0,0 +1,5 @@
+# Revision history for opentelemetry
+
+## 0.0.0.0 -- 2020-01-04
+
+* First version. Released on an unsuspecting world.

Diff for: LICENSE

@@ -0,0 +1,7 @@
+Copyright 2020-present Dmitry Ivanov
+
+Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Diff for: opentelemetry-api/Setup.hs

@@ -0,0 +1,2 @@
+import Distribution.Simple
+main = defaultMain

Diff for: opentelemetry-api/opentelemetry.cabal

@@ -0,0 +1,16 @@
+cabal-version:       2.4
+name:                opentelemetry
+version:             0.1.0.0
+license-file:        LICENSE
+author:              Dmitry Ivanov
+maintainer:          [email protected]
+build-type:          Simple
+extra-source-files:  CHANGELOG.md
+
+library
+  build-depends:
+    base >= 4.12,
+    clock >= 0.8,
+    random
+  hs-source-dirs: src
+  default-language: Haskell2010

Diff for: opentelemetry-api/src/OpenTracing/API/Common.hs

@@ -0,0 +1,19 @@
+module OpenTracing.API.Common where
+
+import Data.Int
+import qualified Data.Text as T
+
+newtype TraceId = TId Int64
+
+newtype SpanId = SId Int64
+
+type Timestamp = Int64
+
+data Span
+  = Span
+      { spanId :: !SpanId,
+        spanTraceId :: !TraceId,
+        spanOperation :: T.Text,
+        spanStartedAt :: !Timestamp,
+        spanFinishedAt :: !Timestamp
+      }

Diff for: opentelemetry-api/src/OpenTracing/API/Explicit.hs

@@ -0,0 +1,21 @@
+module OpenTracing.API.Explicit where
+
+import OpenTracing.API.Common
+import System.Random
+
+startRootSpan :: T.Text -> IO Span
+startRootSpan name = do
+  timestamp <- now64
+  sid <- randomIO
+  pure $! Span sid sid name timestamp 0
+
+startChildSpanOf :: Span -> T.Text -> IO Span
+startChildSpanOf parent name = do
+  timestamp <- now64
+  sid <- randomIO
+  pure $! Span sid (spanTraceId parent) name timestamp 0
+
+finishSpan :: Span -> IO Span
+finishSpan sp = do
+  timestamp <- now
+  sp {spanFinishedAt = timestamp}

Diff for: stack-8.8.1.yaml

@@ -0,0 +1,4 @@
+resolver: nightly-2020-01-04
+
+packages:
+- opentelemetry-api

Diff for: stack.yaml

@@ -0,0 +1,4 @@
+resolver: lts-14.19
+
+packages:
+- opentelemetry-api